G "^ \ ( 1 BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY) ZOOLOGY Vol. 21 19701972 BRITISH MUSEUM (NATURAL HISTORY) LONDON: 1975 DATES OF PUBLICATION OF THE PARTS No. I . . . -.22 December 1970 No. 2 . . . . .28 April 1971 No. 3 . . . . .10 September 1971 No. 4 . . . .10 September 1971 No. 5 . . . .21 September 1971 No. 6 . . . . .3 December 1971 No. 7 . . . .3 December 1971 No. 8 ..... 4 February 1972 Printed in Great Britain by John Wright and Sons Ltd. at The Stonebridge Press, Bristol BS4 5NU CONTENTS ZOOLOGY VOLUME 21 No. i. Decapod crustacean larvae collected during the International Indian Ocean Expedition. Families Raninidae and Homolidae. By A. L. RICE No. 2. Bats from Ethiopia collected by the Great Abbai Expedition, 1968. By J. E. HILL and P. MORRIS (Pis. 1-3) No. 3. On some species of parasitic worms in the 'Discovery' collections obtained in the years 1925-1936. By S. MARKOWSKI No. 4. Mites of the genus Hypoaspis Canestrini, 1884 5. sir. and related forms (Acari : Mesostigmata) associated with beetles. By M. COSTA .......... No. 5. The polychaete fauna of the Solomon Islands. By P. E. GIBBS No. 6. Lizards and snakes from Transjordan, recently acquired by the British Museum (Natural History). By Y. L. WERNER (Pis. 1-6) No. 7. Conchoecia from the North Atlantic, the 'procera' group. By M. V. ANGEL Miscellanea .......... Conchoecia pseudoparthenoda (nov. sp.), a new halocyprid ostra- cod for the Tropical North Atlantic. By M. V. ANGEL . The type specimens and identity of the species described in the genus Lithobius by George Newport in 1844, 1845 and 1849 (Chilopoda, Lithobiomorpha). By E. H. EASON . A re-examination of the chestnut-shouldered wren complex of Australia. By C. J. O. HARRISON ..... A new species of Lironeca (Isopoda ; on cichlid fishes in Lake Tanganyika. Eunice manihine sp. nov. (Polychaeta of the flavus-bidentate group from Indian Ocean. By M. R. LONGBOTTOM .... Original description of the gangetic dolphin, Platanista gange- tica, attributed to William Roxburgh. By G. PILLERI . A new genus and species of Sudan leech formerly confused with Limnatis nilotica (Hirudinidae s.l. : Hirudinea). By L. R. RICHARDSON ......... The type-species of the genera Phoxinellus, Pseudophoxinus and Paraphoxinus (Pisces, Cyprinidae). By E. TREWAVAS . Cymothoidae) parasitic By R. J. LINCOLN : Eunicidae), a member the western equatorial 25 Index to Volume 21 67 99 213 257 285 289 297 313 329 339 345 349 359 363 DECAPOD CRUSTACEAN LARVAE COLLECTED DURING THE INTERNATIONAL INDIAN OCEAN EXPEDITION. FAMILIES RANINIDAE AND HOMOLID A. L. RICE BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY) ZOOLOGY Vol. 21 No. i LONDON : 1970 DECAPOD CRUSTACEAN LARVAE COLLECTED DURING THE INTERNATIONAL INDIAN OCEAN EXPEDITION. FAMILIES RANINIDAE AND HOMOLIDAE BY ANTHONY LEONARD RICE Pp. 1-24; 9 Text-figures BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY) ZOOLOGY Vol. 21 No. i LONDON: 1970 THE BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY), instituted in 1949, is issued in five series corresponding to the Departments of the Museum, and an Historical series. Parts will appear at irregular intervals as they become ready. Volumes will contain about three or four hundred pages, and will not necessarily be completed within one calendar year. In 1965 a separate supplementary series of longer papers was instituted, numbered serially for each Department. This paper is Vol. 21 No. i of the Zoological series. The abbreviated titles of periodicals cited follow those of the World List of Scientific Periodicals. World List abbreviation Bull. Br. Mus. nat. Hist. (Zool.). Trustees of the British Museum (Natural History), 1970 TRUSTEES OF THE BRITISH MUSEUM (NATURAL HISTORY) Issued 22 December, 1970 Price DECAPOD CRUSTACEAN LARVAE COLLECTED DURING THE INTERNATIONAL INDIAN OCEAN EXPEDITION. FAMILIES RANINIDAE AND HOMOLIDAE By A. L. RICE SYNOPSIS Five crustacean larvae belonging to the family Raninidae and two belonging to the family Homolidae are described from material collected during the International Indian Ocean exped- dition. Probable identities of the larvae are suggested where possible. Larval evidence for the relationship between the Homolidae, the Raninidae and the higher Brachyura is discussed. INTRODUCTION THE larval stages of decapod crustaceans of the Indian Ocean are rather poorly known, few having been hatched from the adults and even fewer reared through all the larval stages. Consequently, only a very small proportion of larvae taken in the plankton in this region can be identified to species with any certainty, and in many cases identification even to family is difficult. In those decapodan families in which the larval characteristics are already well known an account of plankton caught material of unknown specific or even generic identity is of doubtful value. On the other hand, the larvae of some families are so poorly known that any information on the developmental stages is of value, even if the material on which this information is based is at the moment unidentifiable. Such is the case with the crab-like families Raninidae and Homolidae, and although the I.I.O.E. collections contain very little material of either group a report on it is warranted. Family RANINIDAE Larval stages belonging to some ten species of raninids have been described previously, but in only three cases have the larvae been definitely identified with a known adult. Ranina ranina (L.) larvae were hatched from the egg by Aikawa (1941) and the first stage described. Lyreidus tridentatus de Haan larvae were reared from the egg to the moult from the 5th to the 6th (last) zoeal stage by William- son (1965) who also had plankton caught megalopae which moulted in the laboratory to the first young crab stage. Finally, Knight (1968) reared larvae of Raninoides benedidi Rathbun taken from the plankton off the Pacific coast of Mexico, some specimens collected as first zoeae surviving into the early crab stages. Two of the above species, R. ranina and L. tridentatus, have been recorded as adults from the Indian Ocean, but the larvae of the other eight recorded Indian A. L. RICE TABLE i Indian Ocean records of adult raninid crabs Species Cosmonotus grayi Adams and White Lyreidus channeri Wood-Mason Lyreidus tridentatus de Haan Notopus dorsipes (Fabr.) Notosceles chimmonis Bourne Notosceles viaderi Ward Ranina ranina (L.) Raninoides hendersoni Chopra Raninoides personatus \Vhite Raninoides serratifrons Henderson Locality Persian Gulf Dar-es-Salaam Holothuria Bank, i335'S: i26E Bay of Bengal, 21 6'3o"N: 89 2o'E Bay of Bengal, 9 i4'io"N: 75 46'E Bay of Bengal Andaman Sea "Both sides of Ceylon" Malabar Coast Dar-es-Sallaam N.E. Laurence Marques, Mozambique, 2532'S: 33 2 4 'E Malabar Coast Andamans Zanzibar Mauritius Amirante Islands Seychelle Islands Mauritius Durban Delagoa Bay Zululand Coast Mozambique Channel, I 9 5'S: 36 2i'E Mozambique Mauritius Reunion Andaman Sea, n49'5o"N:92 52'E Bay of Bengal, off the mouth of the river Hughli Bay of Bengal Holothuria Bank Off Cape Negrais, Burma i525'N: 9 3 45'E Off Travancore coast, 955'N: 7545'E Off southern Ceylon, 6 2'3"N: 81 29'E Ceylon Ceylon Malabar Coast Port Shepstone, Natal Source Alcock, 1896 Doflein, 1904 British Museum (Nat. Hist. Wood-Mason, 1886 Alcock, 1899 Alcock, 1896 Alcock, 1896 Alcock, 1896 Alcock, 1896 Doflein, 1904 U.S. Nat. Mus. Alcock, 1896 Alcock, 1896 Nobili, 1905 Studer, 1882 U.S. Nat. Mus. U.S. Nat. Mus. Ward, 1942 Barnard, 1950 Barnard, 1950 Barnard, 1950 U.S. Nat. Mus. Bianconi, 1851 Bouvier, 1915 Hoffman, 1874 Chopra, i933b Chopra, I933a Alcock, 1896 Henderson, 1893 Zool. Survey India Zool. Survey India Zool. Survey India Laurie, 1906 Alcock, 1896 Alcock, 1896 Barnard, 1950 INDIAN OCEAN RANINID AND HOMOLID LARVAE D FIG. i. Ranina ranina (L.), stage I zoea. A, Posterior view; B, lateral view; C, frontal view; D, dorsal view of abdomen; E, enlarged frontal view of lateral carapace spine of left-hand side; F, enlarged dorsal view of postero-lateral part of telson. Bar scale represents 2.0 mm for A, i-o mm for B, C and D, and 0-2 mm for E and F. A. L. RICE FIG. 2. Ranina ranina (L.), stage I zoea. A, Antennule; B, antenna; C, mandibles; D, maxillule; E, maxilla; F, first maxilliped; G, second maxilliped. Bar scale represents 0-5 mm. INDIAN OCEAN RANINID AND HOMOLID LARVAE 7 Ocean raninids (see Table i) are completely unknown. The 1. 1. O.K. collections contain only four raninid zoeae and a single megalopa. One of these zoeae appar- ently belongs to R. ranina but the identities of the other specimens are very un- certain. The British Museum (Natural History) collections contain hatched material of R. ranina and I have taken this opportunity to re-illustrate the first zoea of this species. Ranina ranina (L.) (figs i and 2) Aikawa, 1941, pp. 117-118, fig. i. MATERIAL: (a) About 100 stage i zoeae hatched in the Aquarium de Noumea, New Caledonia, 4. XII. 1956 and presented to the British Museum (Natural History) by Mons. P. Budker of the Museum National d'Histoire Naturelle, Paris (B.M. reg. no. 1958: 7: 4: 2-9). (b) One stage i zoea taken by the Anton Bruun at station 18, 07 4i'N: 97 59 'E on 21. III. 1963. This specimen is badly damaged but appears to belong to this species. SIZE: Tip to tip of the rostral and dorsal carapace spines 6-7-7-7 mm - REMARKS: Because of the relative abundance of material available it is now possible to illustrate the larvae of this species adequately and a written description is not necessary. Aikawa's Japanese larvae were somewhat smaller than those from Noumea and he gives a spine tip to spine tip length of 4-2 mm, but the two sets of larvae show very close agreement in all other features which Aikawa either described or illus- trated. However, Aikawa did not mention the spinules on the antennae and maxillipeds although they were almost certainly present in his material. Williamson (1965) reported such spines on the maxillipeds of first stage zoeae of Lyreidus tridentatus, and these features may therefore be widespread within the Raninidae. However, without dissection the appendages of the larvae reported below could not be exam- ined at sufficiently high magnifications in all cases to determine whether the spinules are present or not. Raninid larva A; fRaninoides sp. (fig- 3) MATERIAL: One specimen in the first zoeal stage. Position 12 36'N: 8o4o'E; depth 200 m to surface. Date 20. VI. 1964. Vessel I.N.S. Kistna; Station 378. I.O.B.C. serial no. 0612. SIZE: Tip to tip of the rostral and dorsal carapace spines 3-3 mm; Carapace length from between eyes to postero-lateral carapace margin 0-93 mm. A. L. RICE FIG. 3. Raninid larva A, stage I zoea. A, Frontal view; B, lateral view; C, dorsal view of abdomen; D, antenna; E, first maxilliped ; F, second maxilliped. The setae covering the surface of the carapace and abdomen are omitted from B and C for clarity. Bar scales repre- sent i-o mm INDIAN OCEAN RANINID AND HOMOLID LARVAE g DESCRIPTION: Carapace with prominent, curved, dorsal and rostral carapace spines, each with a number of subsidiary spines, mainly on the anterior edge of the rostral spine and the posterior edge of the dorsal spine. Lateral spines normally directed downward and forward, roughly parallel to the rostral spine, but that of the left-hand-side displaced backwards (see fig. 3). Each lateral spine with a row of subsidiary spines on the dorsal edge. Anterior dorsal tubercle in the mid-line between eyes; posterior tubercle behind the dorsal spine. A pair of spines on each side of the posterior carapace tubercle, close to the posterior carapace margin. Surface of carapace covered with stiff, almost spine-like bristles (not shown in fig. 3(B)). Eyes sessile, each with a proment spine and a papilla on the stalk. Abdomen of 5 segments plus the telson. Segment i with a large mid-dorsal spine and 2 pairs of smaller dorso-lateral spines. Segments 2-5 each with a single median ventral spine and paired dorsal, dorso-lateral, postero-lateral and postero- ventral spines. The dorso-lateral spines on segment 2 directed forwards like the 'lateral knobs' on this segment in the larvae of the higher Brachyura. Telson (fig. 3(C)). Each arm of the shallow telson fork with a very large setose spine and 3 postero-median plumed setae. Outside the major spine on each side there are 2 spines, the outer naked, the inner setose. Antero-lateral margin of each telson arm carries 4 smooth spines. There are a number of spinules on the dorsal surface of the telson, and each of the 2 major spines has a subsidiary spine on the dorsal surface close to the base. Antennule simple and unsegmented, with 2-3 terminal aesthetascs and i seta. Antenna as shown in fig. 3 (D). Mandibles with incisor and molar processes, but no palp. Maxillule with an unsegmented endopod with 3 terminal and i sub-terminal seta. Endites well developed, but no lateral seta on basis. Maxilla with 5 setae on the endopod. Scaphognathite with 4 sub-equal plumose setae on the lateral margin and a much longer posterior seta. Maxillipeds i and 2 as shown in fig. 3 (E and F). None of the more posterior appendages developed. REMARKS: This larva is tentatively attributed to the genus Raninoides, on the basis of its close resemblance to that of Raninoides benedicti, but it could belong to other Indian Ocean genera whose larvae are unknown. It differs so much from the first zoea of Lyreidus tridentatus, particularly in the length of the lateral carapace spines and in the form of the telson, that it is very unlikely to belong to L. channeri, the only other member of the genus recorded from the Indian Ocean. The larva also differs from the Ranina ranina larvae illustrated above, particularly in being much smaller and possessing eyestalk spines. Of the raninids recorded from the Indian Ocean this leaves 7 species belonging to the genera Cosmonotus, Notopus, Notosceles and Raninoides as possible parents. The larva could belong to any of these genera, but its very close resemblance to the described larvae of Raninoides benedicti Rathbun (Knight, 1968) makes another species of this genus a strong possiblity. The larva differs from the first stage of R. benedicti in only a few relatively minor points. Thus, the lateral carapace spines are relatively longer than in R. benedicti A. L. RICE B E FIG. 4. Raninid larva B, stage III (?) zoea. A, Frontal view; B, lateral view; C, dorsal view of abdomen; D, antenna; E, first maxilliped; F, second maxilliped. Bar scale represents i-o mm for D and 2-0 mm for the remainder. INDIAN OCEAN RANINID AND HOMOLID LARVAE n and carry more subsidiary spines. There are 4 spines on the antero-lateral margin of each telson fork as opposed to 2 in R. benedicti, and there is an extra pair of spines on the posterior carapace margin. All of these differences are probably specific rather than generic. If the larva does belong to Raninoides then the known distributions of the adults (Table i) indicate that it probably belongs either to R. personatus White or to R. serratifrons Henderson. Raninid larva B (fig. 4) MATERIAL: One slightly damaged specimen, probably a third zoea. Position 06 26 'N: 49 46'E; depth 200 m to surface. Date 17. VIII. 1964. Vessel Argo; Dodo cruise; Station 37. I.O.B.C. serial no. 0374. SIZE: Carapace length from between the eyes to posterior carapace margin 1-83 mm; Abdomen length 2-71 mm; no spine tip to spine tip measurement can be given because the dorsal spine is broken. DESCRIPTION: Carapace with long dorsal and rostral spines, and curved, for- wardly directed lateral spines, each with a number of subsidiary spines. Anterior and posterior blunt dorsal tubercles in the mid-line. A supra-ocular spine present on the right-hand-side; the left-hand-side is damaged, but does not appear to have possessed a spine in this position. A number of spines on the carapace surface beneath the insertion of each lateral spine and on the slightly raised ridge between the dorsal and lateral spines. A series of spines on each postero-lateral carapace margin decreasing in size ventrally. Eyes free, with the stalks carrying many setae but no sign of papillae or spines. Whole surface of carapace covered with short setae (not shown in the illustrations). Abdomen of 6 segments plus the telson. Segments 2-5 with long, acute spines on the postero-lateral corners. Segment 2 with forwardly directed lateral processes and segments 4 and 5 each with a median ventral spine. All abdominal segments with a number of other spines on the dorsal and lateral surfaces and also on the posterior margins; segments 1-5 have long setae on the posterior margins (fig. 4(C)). Telson (fig. 4(C)) a broad flat plate, about 4 times as broad as its length in the mid-line. Posterior margin on the right-hand-side carries a large, fused spine, presumably representing the 4th telson process. Outside this large spine there are a very small and 2 larger fused spines which probably represent the first 3 telson processes, although the outer one is not clearly distinguishable from the series of spines on the antero-lateral telson margin. Postero-lateral region of the telson on the left-hand-side is damaged beyond the base of the main fused spine. Posterior margin with 21 articulated processes between the major spines. A series of small spines on the dorsal surface, close to the posterior margin, extends onto the main telson spines. Dorsal surface of telson and abdominal segments with many small setae. 12 A. L. RICE Antennule simple and unsegmented, with 3-4 terminal aesthetascs and a single seta. Antenna (fig. 4(D)) with 19-20 marginal setae on the scale and a series of small bristles on both the upper and lower surfaces. Endopod less than 1/3 length of FIG. 5. Raninid larva C, terminal zoea. A, Dorsal view; B, lateral view of thorax; C, lateral view of abdomen; D, antenna; E, ventral view of last pleopod and uropod on the right-hand- side. The small surface setae have been omitted partly from A and wholly from B. Bar scales represent i-o mm. INDIAN OCEAN RANINID AND HOMOLID LARVAE 13 scale, fused to basis and armed with a single terminal seta. Basis with spinous process about 1/3 length of scale, and a second prominent spine at the base of the scale. Manbidle with no palp. Maxillule with an unsegmented endopod armed with 4 setae. A single seta on the lateral margin of the basis below the endopod. Maxillipeds i and 2 as shown in fig. 4(E and F). Exopod of maxilliped i with n or 12 natatory setae, that of maxilliped 2 with 13 setae on the distal half and 3 on the proximal half. Maxilliped 3 and the more posterior thoracic appendages present as unarmed, unsegmented buds. No pleopods present but the uropods have well developed exopods carrying 6 or 7 marginal setae. Endopods represented by very small unarmed buds not separated from the protopods. REMARKS : From the known development of Lyreidus tridentatus and Raninoides benedicti it is clear that the determination of the zoeal stage in raninid larvae is not as simple as it is, for example, in the higher Brachyura. However, from the pres- ence in the above larva of well developed uropods but the absence of pleopods, and also the degree of development of the antennules, antennae and maxillipeds, it appears to be at about the mid-point of the zoeal series, perhaps the third or fourth of a total of about 6 zoeal stages. Identification of this larva is also difficult. The differences between it and the known larvae of Lyreidus and Raninoides suggest that it belongs to a genus other than these. The changes which would be necessary to transform the first zoea of Ranina ranina into this larva, particularly in the armature of the carapace and the form of the telson, are greater than those ocurring during the development of L. tridentatus and R. benedicti, indicating that it does not belong to R, ranina either. This leaves the parentage still very uncertain, but probably among the genera Cosmonotus, Notopus and Notosceles. Raninid larva C (fig- 5) MATERIAL: One specimen in the last zoeal stage. Position 09 34'N: 75 i6'E; depth 200 m to surface. Date 10. II. 1965. Vessel Meteor; Station 187. I.O.B.C. serial no. 0145. SIZE: Tip of rostral spine to tip of dorsal spine 3-8 mm; tip of rostral spine to posterior median carapace margin 3-9 mm; total length (tip of rostral spine to base of telson fork) 6-6 mm. DESCRIPTION: Carapace with prominent forwardly directed rostral and paired lateral spines; subsidiary spines on the dorsal surface of the rostrum and on the outer surfaces of the laterals. Dorsal spine small, curving posteriorly. Blunt anterior and posterior carapace tubercles in the mid-line. Rostrum widens between the eyes to a front carrying a series of spines on each antero-lateral angle. A pair 14 A. L. RICE of bulbous lobes behind the eyes each carrying a prominent spine antero-laterally and a number of smaller spines dorsally. A curving row of 6 spines on each side of the carapace between the bases of the lateral and dorsal spines. A parallel row of 4 spines close to the postero-lateral carapace margin. Each postero-ventral corner of the carapace with a single spine and a series of denticles. A prominent papilla on each eyestalk. Abdomen (fig. 5 (A and C)) of 6 segments plus the telson. First segment with a raised transverse ridge armed with a row of long plumose setae and with 3 spines close to the mid-line. Segments 2-5 all basically similar, having each postero- lateral margin produced into a long, slightly curved spine. A somewhat variable number of other spines on each segment, but a basic pattern of 4 on the dorsal surface anteriorly, and a series of 5 on the postero-dorsal margin. Segment 5 with additional spines, including a prominent one at each postero-lateral corner. Seg- ment 6 with only 2 dorsal spines, but 6 spines on the posterior margin, the outer pair in dorsal view looking like the postero-lateral spines of the more anterior seg- ments. Telson (fig. 5 (A)) a broad, bilobed plate. Each antero- and postero-lateral margin with a series of fused spines increasing in size gradually posteriorly, but ending in a much larger spine with a small spine basally on the dorsal surface. Posterior telson margin with 10 pairs of articulated processes between the telson forks, inner 3 pairs much smaller than the others and probably added at the most recent moult. The whole of the dorsal surface of the carapace, abdomen and telson covered with short, close-set setae. Antennule with an unsegmented peduncle, swollen basally and with an obvious statocyst. Endopod unarmed and not separated from the peduncle. Flagellum with 3 groups of about 3, 3, and 4 aesthetascs. Antenna (fig. 5(D)) with 26-28 marginal setae on the scale. Endopod 3-segmented, about as long as scale and with a single terminal seta. Protopod with 2 spines and 3 setae. Mandible with an unarmed, unsegmented palp. Maxillule with 2-segmented endopod carrying 5 setae on the distal segment and a single seta on the proximal segment. Lateral margin of basis with a single seta. Maxilla with more than 70 marginal setae on the scaphognathite. Unsegmented endopod with 6 terminal, i medial and 4 lateral setae. Maxilliped i with 2-lobed epipod. Basipod with 15 setae on medial margin. The 5 segments of the endopod carry 3, 2, 2, 4 and 6 setae respectively on the medial margins. The lateral margins of segments 2 and 5 (terminal) each with a single fine seta, those of segments 3 and 4 each with 2 fine setae. Exopod 2-segmented; proximal segment with 8 setae along posterior edge, distal segment with 15 or 17 setae around whole margin. Maxilliped 2 with simple epipod. Basipod with 4 setae on medial margin and 2 on posterior surface at the base of the endopod and exopod. Endopod on one side of 4 segments with 2, i, 2 and 3 inner setae respectively. On the other side the long penultimate segment is sub-divided, the proximal part being unarmed. Terminal and sub-terminal segments each with a very fine lateral seta. Exopod 2-segmented ; INDIAN OCEAN RANINID AND HOMOLID LARVAE 15 proximal segment with 6 or 7 setae along posterior edge, distal segment with 21 marginal setae. Maxilliped 3 with endopod indistinctly divided into 4 segments of which the terminal and sub-terminal each carry a short seta. Exopod short, simple and unarmed. Pereiopods all present and indistinctly segmented, the first pair chelate. Pleopods on abdominal segments 2-5 well developed but unsegmented, with small endopods and larger exopods (fig. 5 (C and E)). Exopods and endopods unarmed, but with somewhat serrate margins indicating that they would probably become setose at the next moult. Uropods with exopods separated from protopods and carrying 20-21 plumose setae. Endopods represented by small buds and not separated from the protopods (fig. 5(E)). REMARKS: Of the raninid larvae previously described, this zoea most closely resembles Lithozoea serrulata described by Aikawa (1933). The two larvae share a number of common features including the broad, plate-like telson, forwardly directed carapace spines, spine rows on the posterior carapace margin and on the side of the carapace between the lateral spines and the dorsal spine, and relatively short rostral and dorsal spines. The main differences between the larvae are the development of the anterior carapace tubercle into a bifurcated spine and the pres- ence of lateral carapace keels in Lithozoea, the presence of a mandibular palp in the Indian Ocean larva and 4 ot 5 segments in the endopod of the second maxilliped in this larva compared with only 3 in Lithozoea. Williamson (1965) pointed out that Lithozoea serrulata possesses a number of homolid characters, particularly in the carapace spines and keels. Although raninid larva C is somewhat less homolid in these respects than Lithozoea, it does resemble late homolid zoeae in having more than 3 segments in the endopod of the second maxilliped. No brachygnathan larvae have more than 3 segments in this endopod, and the only previously described raninid larva which may have more than 3 is Acanthocaris described by Claus (1876 and 1885) (see Williamson, 1965, p. 388), which also shows some homolid features in its carapace. Little can be said about the identity of this Indian Ocean larva. As with the previous larva, comparison with published larval descriptions readily excludes it from the genera Lyreidus, Ranina and Raninoides. This still leaves as possible parents the genera Notopus, Cosmonotus and Notosceles, although adult Notosceles are so similar to Raninoides that they must surely have similar larvae. The simil- arities between the Indian Ocean larva and Aikawa's Lithozoea serrulata suggest that they belong to the same genus. If this is so, the Indian Ocean larva may belong to Notopus dorsipes (Fabr.) since, of the three genera deduced as possible parents, Notopus is the only one with different species recorded in Indian and Japanese waters. N. dorsipes is the only species known from the Indian Ocean, having been recorded by Alcock (1896) from off the Malabar coast, relatively close to where raninid larva C was collected, but two other species, N. ovalis Henderson and N. misakiensis Sakai are also recorded from Japan (Sakai, 1937). Lithozoea serrulata perhaps belongs to one of these species. i6 A. L. RICE Raninid larva D; fRaninoides sp. (figs 6 and 7) MATERIAL: One megalopa. Position 10 36'N: 95 39'E; depth 125 to 250 m. Date 25. III. 1963. Vessel Anton Bruun; cruise i; Station 24 S.O.S.C. Ace. no. 3. SIZE : Carapace length from tip of rostrum to posterior carapace margin 3 -6 mm ; Maximum carapace width 1-9 mm. DESCRIPTION: The megalopa is fully illustrated in figs 6 and 7. It is very similar to the megalopa of Raninoides benedicti as described by Knight (1968) and therefore only the main differences between the two larvae will be mentioned here. G FIG. 6. Raninid larva D; ? Raninoides megalopa. A, Dorsal view; B, lateral view of cara- pace; C, ventral view of anterior part of thorax; D, dorsal view of telson; E, cheliped, left- hand-side, ventral view; F, G, and H, third, fourth and fifth pereiopods respectively of the right-hand-side, dorsal views. Bar scales represent i-o mm for A, B, C and E, and 0-5 mm for D, F, G and H. INDIAN OCEAN RANINID AND HOMOLID LARVAE FIG. 7. Raninid larva D ; ?Raninoides megalopa. A, Maxillule; B, maxilla; C, D and E, first, second and third maxillipeds in ventral view; F, ischium and exopod of third maxilliped in dorsal view. Bar scale represents i-o mm. i8 A. L. RICE The carapace is slightly narrower posteriorly than is that of R. benedicti. The eyestalk papillae are placed postero-ventrally rather than antero-dorsally as in R. benedicti. The large spine between the bases of the chelipeds in R. benedicti is absent. The Indian Ocean megalopa has no podobranch on the second maxilliped, while the ischium of the third maxilliped (fig. y(E and F)) is relatively longer than in R. benedicti and has no teeth on the inner margin. The chelipeds and the second and third legs in R. benedicti each have a prominent spine on the ventral margin of the merus; the Indian Ocean megalopa lacks these spines but has a spine on the dorsal margin of the carpus of legs two and three. (These two legs are very similar, and therefore only leg three is illustrated in fig. 6.) The fourth and fifth legs are very similar in shape in the two larvae, but the fourth leg in the Indian Ocean specimen carries many more setae and the dactyl is less acutely pointed than in R. benedicti. REMARKS: The similarity between this larva and the known megalopa of Ran- inoides benedicti indicates that it belongs to the same genus. From the locality of capture of the larva and the known distributions of the adults, Raninoides hender- soni Chopra and R. serratifrons Henderson are equally likely to be the parent. Family HOMOLIDAE Plankton-caught larvae of the Homolidae present very much the same problems of identification as do those of the Raninidae, since larvae have been hatched from only four species and the complete larval development is known for only one of these (see Williamson, 1965 and Rice and Provenzano, 1970). The 1. 1. O.K. collections contain only two homolid zoeae, neither of them agreeing with any previously described larvae. Homolid larva A fHomola sp. (fig. 8) MATERIAL: One specimen, probably a second zoea. Position 11 49 'S: 49 23 'E. Date 21. VII. 1964. Vessel R.R.S. Discovery; Station 5508. I.O.B.C. serial no. SIZE : Carapace length from tip of rostrum to posterior margin in mid-line i -4 mm ; Total length from tip of rostrum to posterior margin of telson in mid-line 2-5 mm. DESCRIPTION : The main features of the morphology of this larva are adequately shown in the illustrations. This description will therefore be restricted to those features which are not illustrated but which can be seen without dissection. Antennule 2-segmented. Distal segment with 3 or 4 aesthetascs and setae; proximal segment with a long median seta, representing the inner flagellum, and a row of 3 short setae. Mandibles without palps. Maxilla with about 18 marginal setae on the scaphognathite. Maxilliped I as shown in fig. 8 (D). INDIAN OCEAN RANINID AND HOMOLID LARVAE 19 Maxilliped 2 with the 4 segments of the endopod carrying i, i, 2 and 5 setae respectively, one seta on the terminal segment being laterally placed. Basis with 5 medial setae and the exopod with 7 natatory setae. Maxilliped: j with an unsegmented endopod carrying a single terminal seta. Exopod with 7 setae. Posterior thoracic appendages represented by unarmed, unsegmented buds. D FIG. 8. Homolid larva A, stage II zoea. A, Dorsal view of carapace; B, dorsal view of abdomen; C, lateral view; D, antenna; E, first maxilliped. Bar scale represents i-o mm. 20 A. L. RICE REMARKS: In general form this larva is very similar to the larvae of Homola barbata (Fabr.) described from Florida by Rice and Provenzano (1970), and also to the series of larvae taken in the plankton off South Africa and attributed to a species of Homola by Rice and von Levetzow (1967). However, the present specimen differs from these previously described forms in several important respects. The supra-ocular spines and the anterior and posterior carapace tubercles, which are very prominent in the Florida and South African larvae, are much reduced in the Indian Ocean specimen. This larva also has the anterior end of the dorsal tooth row on the carapace less protruberant than in the other larvae, and less likely to be replaced by a spine in the later stages. The dorsal spines on abdominal segments 2-5 in the Florida and South African larvae are entirely lacking in this specimen and, except for the second segment, the dorso-lateral spines are reduced to blunt protruberances. The Indian Ocean larva also lacks spines on the dorsal surface of the telson. Finally, in its degree of development this larva does not agree precisely with any stage in either of the previously described series, falling between the second and third stage in both cases. The absence of dorsal telson spines in two 1 Homola larvae from off south-east Africa described by Boas (1880) suggested to Rice and von Levetzow that these larvae were specifically distinct from their own South African material. From the known distributions of the adults these authors suggested that Boas's larvae might represent Homola orientalis Henderson, while their own material belonged to the eastern Atlantic and South African form of H. barbata. The larvae described here also lacks dorsal telson spines, like Boas's larvae, but differs from them in having reduced supra-ocular spines. Boas's larvae also have a pair of dorso-lateral carapace spines, presumably developed from the anterior end of the dorsal carapace tooth row of an earlier stage ; as noted above, such spines are unlikely to be developed in a later stage of the I.I.O.E. larva. If these differences are specific, then there is either a third, unsuspected, species of Homola in the south- western Indian Ocean, or else at least some of the larvae attributed to Homola in fact belong to a different genus. Knowledge of generic differences between homolid larvae is restricted to a compari- son of hatched larvae of Homola barbata (Fabr.) (Rice and Provenzano, 1970), Paromola japonica Parisi and Latreillia phalangium de Haan (Aikawa, 1937) and Latreillia australiensis Henderson (Williamson, 1965). Williamson noted that the homolid larvae described up to that time (1965) fell into two groups, one of which, including the hatched larvae of Latreillia and Paromola, differed from the second group in having neither dorsal nor antero-lateral carapace spines and no dorsal spines on the abdomen. Williamson suggested that these groups probably did not represent taxonomic groupings within the family and that intermediate forms would probably be found as more homolid larvae were described. The larva described here agrees most closely with the second of these larval groups, which includes not only the larvae described by Rice and von Levetzow (1967), Rice and Provenzano (1970) and Boas (1880), but also Gurney's (1924) Dromiacean species I and specimens attributed to the genus Homola by Cano (1893), INDIAN OCEAN RANINID AND HOMOLID LARVAE Thiele (1905), Pike and Williamson (1960) and Rice (1964). However, it differs from all of these forms in the absence of mid-dorsal spines on the abdominal segments and is therefore intermediate between Williamson's two groups. Considering the great similarity between the known larvae of Latreillia and Paromola, generic differences between homolid larvae seem to be very slight so that this larva may, indeed, belong to a genus other than Homola. FIG. 9. Homolid larva B, stage III zoea. A, Dorsal view; B, lateral view; C, antenna; D, E and F, first, second and third maxillipeds. Bar scale represents i-o mm for A and B, and 0-5 mm for C, D, E and F. 22 A. L. RICE Homolid larva B (fig- 9) MATERIAL: One specimen, probably a third zoea. Position 16 3i'N: 54 o8'E. Date 30. VI. 1963. Vessel R.R.S. Discovery: Station 5026. I.O.B.C. serial no. 0811. SIZE : Carapace length from tip of rostrum to posterior margin in mid-line i -5 mm. Total length from tip of rostrum to posterior margin of telson in mid-line 3 -3 mm. DESCRIPTION: Carapace with a forwardly directed and somewhat upturned rostrum. Prominent mid-dorsal spine and smaller posterior carapace tubercle; no anterior tubercle. Dorsal tooth row of 70-80 teeth on each side, extending from middle of posterior margin to behind the eye and ending in a rather longer and stouter tooth. Postero-ventral tooth row of 50-60 sub-equal teeth. A prominent ventro-lateral spine on each side of the carapace above the base of the third maxil- liped. Prominent eyestalk papillae. Abdomen of 6 segments and telson. Segment 2 with slight dorsal transverse ridge and segment 5 with small postero-lateral processes; otherwise all abdominal seg- ments simple and unarmed apart from some setae close to posterior margins. Telson a broad, triangular plate, with 3 fused spines at each postero-lateral angle and 10 pairs of processes articulated to posterior margin. Uropods with protopods not separated from endopods and exopods. Endopods unarmed, exopods with 9-11 marginal setae. Antennule 2-segmented, proximal segment with a single long plumose seta repre- senting ventral flagellum, distal segment with 2 terminal aesthetascs and 2 setae. Antenna (fig. g(C)) with 16 marginal setae on scale, spinous process about 1-5 times length of scale, endopod unarmed and less than half length of scale. Mandibles without palps. Maxillule with 5 setae on distal segment of endopod and a single seta on proximal segment ; no lateral seta on basis. Maxilla with about 40 setae on scaphognathite. Maxillipeds as illustrated in figs 9 (D, E, and F) ; exopods of each with 8 natatory setae. Posterior thoracic appendages present as unarmed, unsegmented buds. REMARKS: Like the preceding larva, this specimen is intermediate between the two homolid larval groups noted by Williamson. Thus, although it possesses the prominent dorsal carapace spine of the 'Homola group, it lacks the dorsal abdom- inal spines typical of most of these larvae. It is even less Homola-like. than the larva described above since it also lacks any suggestion of supra-ocular spines, it has very small antero-laterals (if, indeed, the enlarged teeth at the anterior end of the dorsal carapace tooth rows represent these), and it has no dorso-lateral projections on the abdominal segments. The combination of characters is so different in this larva from that in any previously described zoea that its identity cannot be established at present. INDIAN OCEAN RANINID AND HOMOLID LARVAE 23 DISCUSSION The small collection of raninid and homolid larvae reported here tends to confirm Williamson's (1965) conclusions that the similarities between the two groups are consistent with both families being fairly close to a pre-brachyuran stock, the raninids being considerably more 'brachyuran' than the homolids. Perhaps the most interesting larva in the collection is that described as raninid larva C which, like Aikawa's Lithozoea serrulata, is intermediate in many features between the homolids and the typical raninid larvae. Williamson noted that L. serrulata represents a possible intermediate step in the simplification of the rather complex carapace armature of the homolids towards the dorsal, rostral and lateral spines of the carapace in typical raninid and brachygnathan zoeae. Raninid larva C seems to be a further step in this direction, since the homolid denticulate carapace- folds, still present in L. serrulata, are represented only by a series of short spines in this larva. The relationship of the lateral carapace spines to the carapace folds and denticle rows in raninid larva C and L. serrulata indicate that the lateral spines in the raninids, and presumably also in the higher Brachyura, are homologous with either the antero-lateral spines in the homolids or, more probably, with the spines developed from the anterior ends of the dorsal denticle rows. The bilobed, plate-like telsons of L. serrulata and raninid larva C also conveniently bridge the gap between the rather anomuran broad triangular telsons of late homolid zoeae and the forked telsons of the zoeae of Ranina, Raninoides and Lyreidus, which are more similar to those of typical brachyuran zoeae. It would be interesting to know if these seemingly primitive raninid larvae belong to species with similarly primitive adults, but such information can come only from the rearing work which is much needed in both the Homolidae and the Raninidae. ACKNOWLEDGEMENTS My thanks are due to the Directors of the Indian Ocean Biological Centre and the Smithsonian Sorting Center for allowing me to examine material in their care. I would also like to thank Dr. K. K. Tiwari of the Zoological Survey of India and Dr. Henry B. Roberts of the Smithsonian Institution for providing me with details of adult raninids from the Indian Ocean in their collections. REFERENCES AIKAWA, H. 1933. On larval forms of some Brachyura. Paper II: a note on indeterminate zoeas. Rec. Oceanogr. Wks. Jap. 5 : 124-254. 1937. Further notes on brachyuran larvae. Rec. Oceanogr. Wks. Jap. 9 : 87-162. - 1941. Additional notes on brachyuran larvae. Rec. Oceanogr. Wks. Jap. 12 : 117-120. ALCOCK, A. W. 1896. Materials for a carcinological fauna of India. No. 2. The Brachyura Oxystomata. /. Asiat. Soc. Beng. 65 (II) : 134-296. - 1899. An account of the deep-sea Brachyura collected by the Royal Indian Museum Maritime Survey Ship "Investigator". Calcutta, 85 pp. BARNARD, K. H. 1950. Descriptive catalogue of South African decapod Crustacea (Crabs and shrimps). Ann. S. Afr. Mus. 38 : 1-837. BIANCONI, G. G. 1851. Specimina Zoologica Mosambicana. Fasc. 5 : Memorie R. Accad. Sci. 1st. Cl. Sci.fis. Bologna, 3 : 91-112. 24 A. L. RICE BOAS, J. E. V. 1880. Studier over Decapodernes Slaegskabsforhokl. K. danske Vidensk. Selsk. Skr. (6) Nat. og Math., Afd. 1 (2) : 25-210. BOUVIER, E. L. 1915. Decapodes marcheurs (Reptantia) et Stomatopodes recueillis a 1'ile Maurice par M. Paul Carie. Bull, scient. Fr. Belg. (7) 48 (3) : 178-318. CANO, G. 1893. Svillupo del Dromidei. Atti Accad. Sci. fis. mat., Napoli 6 (2) : 1-23. CHOPRA, B. i933a. Further notes on Crustacea Decapoda in the Indian Museum. III. On the decapod Crustacea collected by the Bengal Pilot Service off the mouth of the River Hughli. Dromiacea and Oxystomata. Rec. Ind. Mus. 35 : 25-52. - !933b. Further notes on crustacean Decapoda in the Indian Museum. IV. On two new species of oxystomous crabs from the Bay of Bengal. Rec. Ind. Mus. 35 : 77-86. CLAUS, C. 1876. Untersuchungen zur Erforschung der genealogischen Grundlage des Crustaceen- Systems. Ein Beitrage zur Descendenzlehre. VVein, 114 pp. CLAUS, C. 1885. Neue Beitrage zur Morphologic der Crustaceen. Arb. zool. Inst. Wien, 6 : 1-108. DOFLEIN, F. 1904. Brachyura. Ergebn. dt. Tiefsee-Expedn 'Valdivia' 1898-1899. 6 :i-3i4- GURNEY, R. 1924. Decapod larvae. Nat. Hist. Rep. Br. Antarct. Terra Nova Exped. (Zool.) 8 : 37-202. HENDERSON, I. R. 1893. A contribution to Indian carcinology. Trans. Linn. Soc. Lond. (2) 5 : 325-458. HOFFMANN, C. K. 1874. Crustaces et Ecinodermes. In: F.P.L. Pollen and D.C. Van Dam (Ed.) Recherches sur la faune de Madagascar 5 (2) : 1-58. KNIGHT, M. D. 1968. The larval development of Raninoides benedicti Rathbun (Brachyura, Raninidae), with notes on the Pacific records of Raninoides laevis (Latreille). Crustaceana, Suppl. 2 : 145-169. LAURIE, R. D. 1906. Report on the Brachyura collected by Prof. Herdman at Ceylon 1902. Rep. Pearl Oyster Fish. 5, Suppl. Rep. XL: 349-432. NOBILI, G. 1905. Crostacei di Zanzibar. Boll. Mus. Zool. Anat. comp. R. Univ. Torino. 20 (506) : 1-12. PIKE, R. B. and WILLIAMSON, D. I. 1960. Larvae of decapod Crustacea of the families Dromiidae and Homolidae from the Bay of Naples. Pubbl. Staz. zool. Napoli 31 : 553-563. RICE, A. L. 1964. The metamorphosis of a species of Homola (Crustacea, Decapoda: Drom- iacea). Bull. mar. Sci. Gulf Caribb. 14 : 221-238. and PROVENZANO, A. J. 1970. The larval stages of Homola barbata (Fabricius) (Crus- tacea, Decapoda, Homolidae) reared in the laboratory. Bull. mar. Sci. (20 : 446-471). and VON LEVETZOW, K. G. 1,967. Larvae of Homola (Crustacea, Dromiacea) from South Africa. /. nat. Hist. 1 : 435-453. SAKAI, T. 1937. Studies on the crabs of Japan. II. Oxystomata. Scient. Rep. Tokyo Bunrika Daigaku Sect. B 3, Suppl. no. 2 : 67-192. THIELE, J. 1905. Uber einige stielaugige Krebse von Messina. Zool. Jb., Suppl. 8 (Festschr. f. Mobius) : 443-474. WARD, M. 1942. A new genus and eight new species of Brachyura from Mauritius and the Chagos Archipelago. Bull. Maurit. Inst. 11 (2) : 39-48. WILLIAMSON, D. I. 1965. Some larval stages of three Australian crabs belonging to the families Homolidae and Raninidae, and observations on the affinities of these families (Crustacea: Decapoda). Aust. J. Mar. Freshw. Res. 16 : 369-398. WOOD-MASON, J. 1886. Description of a new species of Crustacea belonging to the brachy- urous family Raninidae. /. Asiat. Soc. Beng. 56 : 206-209. Dr. A. L. RICE, Department of Zoology BRITISH MUSEUM (NATURAL HISTORY) CROMWELL ROAD LONDON, S.W.7 Printed in England by Staples Printers Limited at their Kettering, Northants, establishment BATS FROM ETHIOPIA COLLECTED BY THE GREAT ABBAI EXPEDITION, 1968 J. E. HILL AND P. MORRIS BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY) ZOOLOGY Vol. 21 No. 2 LONDON: 1971 . ON o N TJ- oo O ob CO N CO I ob co oo CO If J oo 00 co oo 1 CO l* CO 00 f^ CO oo oo 00 t^ oo oo CO V H "10 s ^H g o .S HI ON ro HI nt CO ^ H H ro oo vO 3 525 o 1 N CO HH CO M Tt- ^> 10 ^ ON vp~ j-. ON ON ON ON ON ON ON ^ON o H-> O !2 .S HI 1 10 CO >O vO 00 CO VO 00 rd M-c j N f j o\ Q r T N CO HI 1 I r r ro ro - G ON ob ON ON ON ON ON ON ON ON 2 CO HH ! g *"> CU ON ON ON & & M W 6 ON M >4-l a "~ cS CO CO 00 ob 1 oo C^ ^N ob oo 1 CO ON ro CO ON a o in O CO M rt CO (-1 a ffi emeni 3 4) "o -S vO H M HI H VO HI HI S O lH 7i OH 3 CO * # H O t^ ^ O r^s vo HI CO ON S M 6 ,1, M N N -j- ON M s s VO, vO_ vO vO i- ^ ^2- t* S ' -^ ho cu N 9 ON ^ op N t^ N op op N CO QJ O ro OJ C^ IO ^- ^t- IO ro ON N *o \ ON s op 3 vo IT) *O 1 T iO vO 1 00 vO CO 00 ON 6 o o M 6 oo w M *o vO ^O VO O u~> vO ' * IH CO O x * OH CO S s * fi 1 S - # * * i . 'S perforatus Oman* p. haedinus S. W. Arabi p. haedinus Ethiopia p. haedinus Kenya p. Sudani Sudan p. swirae N. Nigeria* p. swirae W. Africa p. rhodesiae Rhodesia h h h h h h h h h h BATS FROM ETHIOPIA 33 are said by that author to be distinctly paler than T. p. haedinus and hardly distin- guishable in colour from material from Sudan and Cutch. Specimens from Northern Nigeria have been separated as a distinct subspecies, T. p. swirae Harrison, 1962, on account of their greyish coloration : Kock (1969 : 80) lists this as a synonym of T. p. perforatus but thinks that there is a possibility that there may exist a distinct western subspecies, for which Taphozous senegalensis Desmarest, 1820 would be the earliest name, with swirae in synonymy. Extending in West Africa to Senegal, Ghana, Mali and the Cameroon, T. perforatus is known also from Tanzania, Botswana and Rhodesia, whence Harrison (1962 : 763) has described a small form, T. p. australis (preoccupied: as a subspecies of Sudani] subsequently renamed T. p. rhodesiae (Harrison, 19643. : 2) and considered a synonym of T. p. Sudani by Kock (1969 : 8l). Measurements of T. perforatus appear in Table i. COLLECTION AND FIELD NOTES. The specimens obtained near Forward Base Two all came from some small caves which lay at the head of a stream gulley, high up the side of the Nile Gorge. The gulley was steep, vertical in places, thickly over-grown and passed through dense thorn scrub covering the hillsides. The caves themselves were shallow and although dim light penetrated almost to their furthest extremities, they provided cool shelter from the sun. Large numbers of Taphozous were found together with single specimens of Nycteris thebaica and Hipposideros ruber. The cave floor was thickly carpeted with guano, and in one area, littered with the wings of large insects. These are presumed to repre- sent the remains of insect prey caught in flight by the bats and taken back to the roost where the thick bodies were eaten and the wings discarded. From their size and abundance it is assumed that these insects were the prey of Taphozous, rather than of the two smaller and less numerous bats. An endeavour was made to collect all wings in reasonable condition from the pile and these have been identified for the most part by Mr. Alan Brindle of the Manchester Museum, the remainder having been examined at the British Museum (Natural History) : the species encountered are listed in Table 2, with their relative abundance. An attempt was made to catch all the bats in the colony and in all, 40 Taphozous were obtained, leaving behind a few individuals that had retreated to inaccessible parts of the cave. All the bats were sexed and weighed in the field, then 21 of the Taphozous sample were released. The sex ratio in the full sample was 19 males: 21 females. Weights ranged from 17 gms to 23 gms, with only two animals exceeding 22 gms. The average weight was 19-5 gms with no significant sex difference. From the narrow size range, and the presence of both sexes in equal numbers and similar body weights it is evident that this was not a nursing colony and that breeding must occur at some other time of year, perhaps in a different place. The Taphozous collected in the Awash National Park were just a small sample taken to record their presence in the lava bubble caves. Here again the cavities were light throughout, but provided shelter and shade in an otherwise very open habitat. 34 J- E. HILL & P. MORRIS TABLE 2 Identities and abundance of insect wings from a roost of Taphozous perforatus Species identified Number obtained Orthoptera Tettigoniidae Diogena fausta (Burmeister) i Mantodea Tarachodes sp. i Polispilota aeruginosa (Goeze) i Lepidoptera Saturnidae Nudaurelea macrophthalma Ky 2 Gyanisa maja Klug i Sphingidae Agrius convolvuli (Linnaeus) 35 Hippotion eson (Cramer) 7 Hippotion osiris (Dalman) i Hippotion celerio (Linnaeus) i Nephele peneus (Cramer) i Platysphinx stigmatica (Mabille) 2 Euchloron megaera (Linnaeus) i Nycteris thebaica labiata (Heuglin, 1861) SPECIMENS, (i) One male, three females. Mabil, Blue Nile Gorge. 10 20' N, 36 45' E, alt. c. 1,200 m. 18 August 1968. (2) Two females, one male. "Forward Base Two", 10 km west of Mabil, Blue Nile Gorge. 10 19' N, 36 45' E, alt. c. 1,000 m. 18-19 August 1968. TAXONOMIC NOTES. These specimens are similar in size (length of forearm 41-45) to examples of N. t. thebaica from Egypt and from other localities (Gondar; Gallabat; Ghibbey Valley, o8i5'N., 3755'E.) in western Ethiopia but are slightly greyer ventrally. For this reason they are referred provisionally to N. t. labiata from Keren. The subspecies of N. thebiaca are discussed by Kock (1969 : 98). COLLECTION AND FIELD NOTES. The Mabil specimens were shot in the roof of a disused hut standing on a hilltop in open cultivated ground. One of the Forward Base Two specimens was taken from the same small caves as the large sample of Taphozous (above), the others from a similar little rock shelter lower down the same river gulley. ADDITIONAL SPECIMENS. The Sandhurst Ethiopian Expedition, 1966 also obtained N. thebaica at a locality northeast of Lake Chamo, southern Ethiopia, BATS FROM ETHIOPIA 35 where specimens were found sleeping separately in deep, shady pits in the ground. Skulls of Nycteris sp. were also present among the cave floor bone debris collected from certain lava blister caves in the Awash National Park in September 1968. Cardioderma cor (Peters, 1872) SPECIMENS. Skeletal material. Awash National Park, Shoa. o85o'N, 40 01 ' E, alt. c. 1,000 m. 28 September 1968. COLLECTION AND FIELD NOTES. Collected among large numbers of mammal bones found on the floor of the lava blister caves. ADDITIONAL SPECIMEN. A skin, thought to be Cardioderma, formed part of a small collection of local mammals held at the HQ of the Awash National Park. Rhinolophus clivosus acrotis Heuglin, 1861 SPECIMENS. Skeletal material. Awash National Park, Shoa. o85o'N, 40 01' E, alt. c. 1,000 m. 28 September 1968. COLLECTION AND FIELD NOTES. Subfossil cave remains, as for previous species. Rhinolophus landeri dobsoni Thomas, 1904 SPECIMEN. One male. Temporary Base, mouth of Azir River, Blue Nile Gorge. 10 29' N, 36 25' E. alt. 1,000 m. 20 August 1968. TAXONOMIC NOTES. This specimen agrees in size with the type specimen of dobsoni from Kordofan and with a small series from the Sudan and western Ethiopia in the collections of the British Museum (Natural History). The series as a whole confirms the measurements of Kock (1969 : 175) and shows that specimens from the Sudan and from Ethiopia are generally smaller (length of forearm in 12 examples 41-5-44-6 (42-8) than those from Malawi (R. I. lobatus: length of forearm in 16 examples 42-4-46-6 (44-8)), or from Tanzania (length of forearm in 5 examples 44-4-46-0 (45-1)). Specimens from Zambia are slightly larger than those from Malawi (length of forearm in n examples 42-5-47-8 (45-5)) but from Kenya are smaller (length of forearm in 10 examples 41-1-45-8 (43-9)), approaching the northern subspecies in size. COLLECTION AND FIELD NOTES. Caught in hand-held mist net, 20.05 hrs on open river bank beside tall trees. Rhinolophus hipposideros minimus Heuglin, 1861 SPECIMEN. One female. Lake Baa-sa-ka, Awash, Shoa. 08 50' N, 40 01' E, alt. c. 1,000 m. 26 September 1968. TAXONOMIC NOTES. This specimen appears to be the second of R. h. minimus to be recorded from Ethiopia, the subspecies being known in northeastern Africa from Keren (the type locality) and from Sennaar, Sudan (Andersen, 1904 : 455). The 36 J. E. HILL & P. MORRIS specimen from Shoa agrees with the Sennaar example excepting only that it has narrower zygomata and has the anterior upper premolar (pm 2 ) smaller, more rounded and less angular in cross-section. Measurements (the Sennaar example in parentheses): length of forearm 367 (357); total length of skull to canine 14-4 (14-5); condylocanine length 12-6 (127); rostral width 3-4 (3-3); zygomatic width 6'7 (7 -5); least interorbital width 1-4 (1-5); width of braincase 6-2 (6-3); mastoid width 6-9 (7-1) ; c - m3 5-0 (5-0) ; c - m 3 5-3 (5-3). COLLECTION AND FIELD NOTES. Caught after dark (20.00 hrs) in a hand-held mist net as it flew low over the open, muddy lake shore. Rhinolophus simulator Anderson, 1904 SPECIMEN. One female ; B.M. 64.854. Three miles south of Goba, Bale Province, (presumably about 5 30' N, 40 05' E P.M.) c. 3,000 m. 1962. TAXONOMIC NOTES. This specimen was first identified in 1964 on accession to the collections of the British Museum (Natural History) as an example of R. hipposideros minimus, but further examination in the course of reporting the Great Abbai material shows that although in the features of the noseleaf it clearly resembles this taxon, it is much too large, particularly cranially, to represent it. It is referred to the rather larger R. simulator, not hitherto reported from any more northerly locality than southern Tanzania, although Dr. K. Koopman (in litt.) of the American Museum of Natural History has identified specimens from western Kenya and the southern Sudan with this species. The Ethiopian specimen agrees closely with simulator in the structure of the sella, which is wide and very slightly constricted at a point a little above its centre and in its low, rounded connecting process which rises slightly above the rounded tip of the sella. The lateral margins of the lancet are slightly concave and the lancet itself is rounded towards the tip to f6rm a broad point. Apart from its generally smaller size, the skull agrees closely with that of simulator, with prominent rostral swellings, a shallow rostral sulcus, the anterior upper premolar (pm 2 ) in the toothrow and with the second lower premolar (pm 3 ) minute and extruded. Like simulator, it differs from R. swinnyi and R. denti (perhaps conspecific) in larger rostral swellings, the presence of a rostral sulcus and in having a longer supraorbital region. Rhino- lophus alticolus Sanborn, 1936 from the Cameroon is also very like simulator, differing chiefly in slightly larger size, rather less acuminate lancet and in having the mesop- terygoid fossa a little wider. There can be little doubt that simulator and alticolus are conspecific : the single specimen from Ethiopia points to the possible existence of a generally smaller montane subspecies in that region, a matter to be resolved by further specimens. The prior name is simulator by many years: alticolus, first described as a subspecies of R. alcyone, has evidently no close affinity with that species. Measurements of R. simulator are compared in Table 3. COLLECTION AND FIELD NOTES. Collected by P. M. Barrer and presented by the Imperial College (University of London) Ethiopian Expedition 1962. BATS FROM ETHIOPIA 37 TABLE 3 Measurements of Rhinolophus simulator 1 S tn M-l f c CD A 5 -o - i "rt ,0 3 CO ^ I"H 4J o 'S * 1 ^ tf X fi 0) h-1 ^ o -a c o --> co O o bo N CO 03 3 h-l 4-> T3 S -i-> to 03 S CO s to a 1 O R. s. simulator 95-7-1-4 SJ c^O i ^^ "s E :S 1 ^ "^ 1.1 "** ^ r^ s s Tetrabothriiis heteroclitus Hymenolepis prudhoei sp. n Diplogonopont balaenopterae Diphyllobothri Glandicephalu Diphyllobothri 2 1 O 173 cfl O V 'o O & ^ i S 8 11 S v ^ ^ Notothen rossi ^ C "S O M <^i vS o ^ * s A. < ^ ^1 il IT J -S >4 O -S, OQ alaenopt usculus 9. yd PARASITIC WORMS IN THE 'DISCOVERY' COLLECTIONS ABBREVIATIONS USED IN THE FIGURES 55 c cuticula c.s. cirrus-sac ex excretory vessel l.m. longitudinal muscles m.ex. median excretory vessel o ovary s.m. subcuticular muscles t testis u uterus v vagina v.d. vas deferens v.g. vitelline glands v.s. vesicula seminalis SYSTEMATIC NOTES The material examined contains twelve species of parasitic worms belonging to four different groups and these are enumerated below. I. TREMATODA NOTOCOTYLIDAE Liihe, 1909 i. Ogmogaster antarctica Johnston, 1931 Host: Leptonychotes weddetti, intestine. Locality: Falkland Islands 15.7.1928. Several specimens of this trematode were found in the intestine of two Weddell seals. In one case they were attached to the walls of the intestine close to strobilae of Glandicephalus perfoliatus. Descriptions of this trematode have been given by Johnston (1931 and 1937). II. CESTODA TENTACULARIIDAE Poche, 1893 2. Tentacularia (larvae) Host: Euthynnus pelamis: cysts in the abdominal muscles. Locality: i5io'N; i83o'W; 15.10.1925. Some six specimens are here recorded. Similar larval stages of a tetrarhynch were described from the same host-species by Rennie and Reid (1912). DIPHYLLOBOTHRIIDAE Liihe, 1910 3. Diphyllobothrium lashleyi (Leiper and Atkinson, 1914) Host : Leptonychotes weddetti intestine. Localities : Falkland Island, and Grytviken, South Georgia; 15-17.7.1928. Great numbers of specimens were obtained from each of three seals. 56 S. MARKOWSKI 4. Diphyllobothrium quadratum (v. Linstow, 1892) Host: Hydmrga leptonyx, small intestine and rectum. Localities: Grytviken, South Sandwich Islands; South Orkney; 15.9, 18-22.1.1928 : 16.2.1931. The material was collected from ten seal-hosts, each showing a very heavy infestation. 5. Diplogonoporus balaenopterae Loennberg, 1892 Host: Balaenoptera musculus, intestine. Locality: 6i53'S, 8732'E, 27.1.1936 ('Southern Empress'). Large portions of strobila and few smaller fragments were found in this sample. 6. Glandicephalus perfoliatus (Railliet and Henry, 1912) Host: Leptonychotes weddelli, intestine. Localities: Falkland Islands, 15.7.1928; Palmer Archipelago, 8.1.1935. Parts of the duodenum of two seal-hosts were found infested with this species. Detailed descriptions of the above-mentioned diphyllobothriid cestodes have been given in earlier papers (Markowski, 1952 and 1955). PTYCHOBOTHRIIDAE Liihe, 1902 7. Bothriocephalusjanickiisp.nov. Figs 1-5 Host: Coryphaena sp. ; stomach. Locality 2405'S, I546'N. 27.11.1925. Some twenty-one fragments and eight complete worms were examined. The strobila is about 8 cm long and very slender, about i mm broad. The scolex is very large in relation to the rest of the body, being 5 mm long and i mm broad. It is provided with a pair of groove-like bothridia. A neck was not observed (Fig. i). The excretory system consists of two pairs of longitudinal vessels, two individual canals at either side of the body. Of each pair the outward or dorsal vessel is about 5x5 (Am in diameter and the inward or ventral vessel about 22-27 M- 111 x 14-21 (xm. Another single median longitudinal canal of about 11-13 x 5-10 [/.m is situated at the right side of the cirrus-sac and the uterine opening. Its walls are thick and provided with cells arranged radially, as seen in the Figs 2 and 3. The longitudinal musculature consists of a very thin layer of fibres lying im- mediately beneath the body-cuticula and two well-developed layers of fibres in- serted in the parenchyma (Fig. 4). The cuticula is about 3-5 [zm thick. The sexually-mature segment is from 0-87 mm to 0-9 mm broad, as measured in transverse section. The genital pore, situated dorsally, leads into a shallow PARASITIC WORMS IN THE 'DISCOVERY' COLLECTIONS 57 genital atrium. The cirrus-sac, measured in the same place, is 160 [Am high and 84 (Am broad, elongate, pyriform and situated dorsally (Fig. 2). There appear to be about 75 testes, but a more precise number, it has not been possible to determine. They are arranged in a single layer in the central part of the segment and measure about 40-50 x 30-35 [Am (Fig. 5). The ventrally-situated tocostoma or uterine pore leads into an atrium, which as measured in transverse section is 68 [Am high and 40 [Am wide (Fig. 3). The vitelline glands are disposed ventrally in a single layer between the longi- FIG. i. Bothriocephalus janickii sp. nov. : scolex. FIG. 2. Bothriocephalus janickii sp. nov.: cross-section of the segment showing cirrus-sac. FIG. 3. Bothriocephalus janickii sp. nov. : cross-section of the segment showing tocostoma. 58 S. MARKOWSKI tudinal muscles, sometimes slightly overlapping into the lateral fields of the seg- ment. They are about 25-30 x 20 (xm (Fig. 4). The ovary is a deeply bilobed structure situated in the middle region of the segment. The eggs are 40-42 x 28- 32 [xm. There are five species of Bothriocephalus occurring in fish-hosts in the Southern Hemisphere. However, the descriptions of some of them are very inadequate (Prudhoe, 1969). Bothriocephalus janickii sp. nov. differs from others quoted by Prudhoe (1969) with its unusually large scolex and extremely slender strobila. The species is named after the well-known Polish zoologist, the late Professor C. Janicki. HYMENOLEPIDIDAE Railliet & Henry, 1909 8. Hymenolepis prudhoei sp. nov. Figs 6-14 Host: Chloephaga picta leucoptera, rectum. Locality: Teal Inlet East Falkland, 5-3-I927- Some sixty-five adult worms were collected. The length of the strobila in these specimens is about 9 cm and the width 4 mm. The scolex is about 125 ^m in length and 137 (xm in width (Fig. 6). The rostellar sac is unusually long in compari- son with the scolex, being about 187 (jun in length and 37-5 ^m in width. The rostellum bears a crown of eight hooks, each measuring 32 (xm. They have FIG. 4. Bothriocephalus janickii sp. nov.: cross-section of the segment showing the arrangement of the longitudinal muscles and vitellaria. FIG. 5. Bothriocephalus janickii sp. nov.: horizontal section of the segment. PARASITIC WORMS IN THE 'DISCOVERY' COLLECTIONS 59 a long well-developed blade, and a very thick, club-shaped handle. The guard is weakly developed (Fig. 7). A neck was not observed. The segments are short, elongate transversely. The three testes, 270-212 X 112-5-125 (xm are situated posteriorly across the segment in a single row (Figs 8 and 14). The vesicula seminalis is large and situated in the anterior region of the segment (Fig. 9). It opens with a coiled duct into the cirrus-sac, which measures about 130 [jan in length and 85 (j.m in width, and is provided with thick muscular walls (Fig. 10). The cirrus is armed with a smooth stylet, which may be observed protruding from the genital opening. The ovary is more or less rounded and connected with the ramifying uterus, which in the gravid segments occupies the whole proglottis. The embryo is en- closed in two membranes. The size of the outer membrane of the egg is 45 x 40 [j.m, the inner membrane is 37 x 28 [zm and the embryo itself 20 x 28 (xm (Fig. 13). Embryonic hooks were not observed. The longitudinal muscles are well developed and form two layers, of these the outer one is more strongly developed (Fig. 12). I. 8 ^'^{^J^^^^^^^A-^: >: J' FIG. 6. Hymenolepis prudhoei sp. nov. : scolex. FIG. 7. Hymenolepis prudhoei sp. nov. : hooks. FIG. 8. Hymenolepis prudhoei sp. nov. : mature proglottis. FIG. 9. Hymenolepis prudhoei sp. nov. : horizontal section of mature proglottis. 6o S. MARKOWSKI Hymenolepis prudhoei sp. nov. which in some features may be compared with H. Usaccata Fuhrmann, 1906, H. octacantha (Krabbe, 1869) and H. philactes Schiller, 1951, differs in the shape and size of the hooks, which in H. bissacata are 37 (jim long, and in H. octacantha and H. philactes 32-40 (xm and 31-39 (xm respectively. Spasski and Spasskaya (1954) give the size of the hooks in H. octacantha: 36-38 [xm. Although there is some similarity between the new form and the other species mentioned, the cirrus-sac is not provided with a saccus accessorius, whilst the stylet is smooth and the shape of the testes is also different. Some Soviet helminthologists, namely Spasski and Spasskaya (1954), Czaplinski (1956), Maksimova (1963), Spasskaya (1966) have erected several new genera by breaking down the genus Hymenolepis Weinland (sensu lato). 10 II FIG. 10. Hymenolepis prudhoei sp. nov. : horizontal section of the cirrus-sac. FIG. ii. Hymenolepis prudhoei sp. nov.: male copulatory apparatus. PARASITIC WORMS IN THE 'DISCOVERY' COLLECTIONS 61 As the erection of these new genera does not seem to have produced a clearly understood and concise classification of the species of Hymenolepis (sensu lato), Weinland's genus in the sense of Fuhrmann's (1932) is here accepted. From the available literature, it seems, that the cestodes recorded from Chloephaga picta leucoptera do not include the form described above. Avery (1966) gives a list of parasitic worms found in this host, but this list is based entirely upon infestation acquired under artificial conditions at Slimbridge, Gloucestershire, where the birds are kept in captivity. 12 FIG. 12. Hymenolepis prudhoei sp. nov. : transverse section of the segment showing the arrangement of longitudinal muscles. FIG. 13. Hymenolepis prudhoei sp. nov.: egg. FIG. 14. Hymenolepis prudhoei sp. nov. : transverse section of a segment. 62 S. MARKOWSKI TETRABOTHRIIDAE Fuhrmann, 1908 9. Tetrabothrius heteroclitus (Diesing, 1850) (Figs 15-20) Host : Phoebetria fusca : intestine. Locality : Maiviken, West Cumberland Bay, South Georgia 14.12.1926. Some sixteen complete strobilae and several fragments were collected from the intestine of a sooty albatross. The length of the strobila is about 18 cm to 20 cm. Its anterior portion is narrow and serrated being about 12 cm in length. The posterior part of the strobila is 2 mm thick, coiled and shows no distinct segmentation. The mature proglottis is 400 [Jim long and i mm broad (Fig. 16). The scolex is 290 (jun long and 330 ^m wide, and provided with two 'auriculae' (Fig. 15). The width in that part of the scolex is 372 (jon. The suckers are 290 [xm long and 175 [Am across. The longi- tudinal muscles form two concentric rings. The inner one is more strongly de- veloped (Fig. 19). 15 FIG. 15. Tetrabothrius heteroclitus: scolex. FIG. 16. Tetrabothrius heteroclitus: mature segment. FIG. 17. Tetrabothrius heteroclitus: transverse section of a mature segment. PARASITIC WORMS IN THE 'DISCOVERY' COLLECTIONS 63 The testes, twenty-two to thirty-two, are roundish and situated in the anterior and in the posterior part of the segment, as well as in the aporal region of the proglottis. They are about 40 [xm in diameter (Fig. 16). The vas deferens forms numerous coils. The cirrus-sac is 152 x 150 pm in diameter (Figs 17 and 18). The vagina runs ventrally to the cirrus-sac. The ovary is of an irregular shape. The egg is 45 X 37 (irn in total diameter. The diameter of the inner membrane surrounding the embryo is 33 x 22 [jun. The embryo is 29 x 20 (j.m ; the embryonic hooks are 12 [jun long (Fig. 20). From the available literature, it seems that Phoebetria fusca is a new host for T. heteroditus. 18 20 FIG. 1 8. Tetrabothrius heteroditus: transverse section of a segment showing cirrus-sac. FIG. 19. Tetrabothrius heteroditus : transverse section of a segment showing the arrangement of the longitudinal muscles. FIG. 20. Tetrabothrius heteroditus: egg. 64 S. MARKOWSKI III. NEMATODA HETEROCHEILIDAE (Railliet & Henry, 1915) 10. Contracaecum osculatum (Rud., 1802) Host : Hydrurga leptonyx and Leptonychotes weddelli, intestine. Localities : South Orkneys 16.2.1931; Palmer Archipelago 18.1.1935. One male and a female specimen were found in the duodenum of H. leptonyx and one female in the duodenum of L. weddelli. ii. Contracaecum sp. (larvae) Host: Chaenocephalus aceratus, liver. Locality: Sandford Bay, South Orkney, 24.1.1933. Mass infestation of the liver of an ice-fish occurred. Because of their larval condition the specific determination of the nematodes has not been possible. IV. ACANTHOCEPHALA POLYMORPHIDAE Meyer, 1931 12. Corynosoma hamanni (v. Linstow, 1892) Host: Notothenia rossi. Locality: South Orkney 17.2.1931. Numerous larval stages were found in the mesenteries of the host. Baylis (1929) has given a useful description of this species. REFERENCES AVERY, R. A. 1966. Helminth parasites of wild fowl from Slimbridge, Gloucester. 2. Parasites of captive Anatidae. /. Helminth 4 (3) : 269-280. BAER, J. G. 1954. Revision taxinomique et etude biologique des Cestodes de la Famille de Tetrabothriidae, parasites d'oiseaux de haute mer et de Mammiferes marins. Mem. Univ. Neuchdtel 1, pp. 1-121. BAYLIS, H. A. 1929. Parasitic Nematoda and Acanthocephala collected in 1925-1927. 'Discovery' Rep. 1 : 541-560. CZAPLINSKI, B. 1956. Hymenolepididae Fuhrmann, 1907 (Cestoda) parasites of some domestic and wild Anseriformes in Poland. Acta parasit. pol. 4 : 175-373, figs. CZAPLINSKI, B. & RIZHIKOV, K. M. 1964. New data on Parabisaccanthes philactes (Schiller 1951) Spassky et Reznik, 1963 (Cestoda, Hymenolepididae) from Poland and the Lena Delta. Acta parasit. pol. 12 : 363-371. DUBININA, M. N. 1953. Cestodes of birds nesting in Western Siberia. Parazit. Sb. 15 : 117- 233- FUHRMANN, O. 1906. Die Hymenolepis-Arten der Vogel. Zentbl. Bakt. ParasitKde (Orig). 41 : 352-358, 440-452, 39 figs. 1932. Les Tenias des oiseaux. Mem. Univ. Neuchdtel 8 : 381 pp. PARASITIC WORMS IN THE 'DISCOVERY' COLLECTIONS 65 JOHNSTON, T. H. 1931. New trematodes from the Subantarctic and Antarctic. Aust, J. exp. Biol. med. Sci. 8 : 91-98. 1937. Trematoda. Scient. Rep. Australian, antarct. Exped. 10 : 1-29. JOHRI, G. N. 1960. Studies on some Cestodes parasites. IV. On four new species including a new genus belonging to the Family Hymenolepididae. Proc. natn. A cad. Sci. India B 30 : 192-202. JOYEUX, CH. & BAER, J. G. 1936. Cestodes. Faune Fr. 30 : 1-613. LAP AGE, G. 1961. A list of the parasitic Protozoa, Helminths and Arthropods recorded from species of the Family Anatidae (Ducks, Geese and Swans). Parasitology 51 : 1-109. MCDONALD, M. E. 1969. Annotated bibliography of Helminths of Waterfowl (Anatidae). Spec, scient. Rep. U.S. Fish Wildl. Serv. 125 : 1-333. MAKSIMOVA, P. 1963. New species of Cestodes occurring in Kazakhstan swan. Trud. Inst. Zool. Alma-Ata 19 : 126-132. MARKOWSKI, S. 1952. The Cestodes of seals from the Antarctic. Bull. BY. Mus. not. Hist. (Zool.) 1 : 125-150, 21 pis. J 955- Cestodes of whales and dolphins from the 'Discovery' collections. 'Discovery' Rep. 27 : 377-395- NERADOVA, J. 1966. Contribution to the knowledge of the Helminthofauna of domestic ducks (Anas platyrhyncha domestica L.) in the western parts of Czechoslovakia. VSst. 6sl. Spol. Zool. 30 : 247-255. PRUDHOE, S. 1969. Cestodes from fish, birds and whales. Rep. B.A.N.Z. antarct. Res. Exped. (B) 8 : 171-193- RAUSCH, L. R. & FAY, H. F. 1966. Studies on the Helminth fauna of Alaska. XLIV. Revision of Ogmogaster jdgerskiold, 1891 with a description of O. pentalineatus sp. n. (Trematoda: Notocotylidae) . /. Parasit. 52 : i, 26-38. RENNIE, S. & REID, D. 1912. The Cestoda of the Scottish National Antarctic Expedition. Rep. Scient. Results Scott, natn. antarct. Exped. Zool. 6 : 243-255, pis. SCHILLER, E. L. 1951. Studies on the Helminth fauna of Alaska. VI. The parasites of Emperor Goose (Philactes canagica L.) with the description of Hymenolepis philactes n. spec. /. Parasit. 37 : 217-229. 1952. Studies on the Helminth fauna of Alaska. III. Hymenolepis kenaiensis n. spec. A Cestode from the Greater Scaup (Ay thy a marila nearctica) with the remarks on endemicity. Trans. Am. microsc. Soc. 71 : 146-149. SKRYABIN, K. I. & MATEVOSYAN, E. M. 1945. Hymenolepidid Cestodes of domestic and game fowl of economic importance. Moscow. 488 pp., Illust. SPASSKAYA, L. P. 1966. Cestoda of birds U.S.S.R. Hymenolepididae. Akad. Nauk. Moldav. S.S.R. Inst. Zool., 698 pp. SPASSKI, A. A. 1963. Hymenolepididae-tapeworms of wild and domestic birds. Part I. Principles of Cestodology 2. Akad Nauk S.S.S.R. Moscow, 418 pp. SPASSKI, A. A. & SPASSKAYA, L. P. 1954. Construction of the Hymenolepidids system. Parasites of birds. Trudy gel'mint. Lab. 7 : 55-119, 27 figs. STEFANSKI, W. 1933. Constantin Janicki un distingue Parasitologue Polonais (1876-1932). Folia morph. 4 : 220-229, phot. SZPOTANSKA, I. 1931. Quelques especes nouvelles ou peu, connues des Hymenolepididae Fuhrmann (Cestodes). Pr. zool. pol. panst. Muz. przyr. 9 : 247-266. Dr. S. MARKOWSKI c/o Department of Zoology BRITISH MUSEUM (NATURAL HISTORY) CROMWELL ROAD LONDON, S.W.7 A LIST OF SUPPLEMENTS TO THE ZOOLOGICAL SERIES , OF THE BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY) 1. KAY, E. ALISON. Marine Molluscs in the Cuming Collection British Museum (Natural History) described by William Harper Pease. Pp. 96; 14 Plates. 1965. (Out of Print.) 3.75. 2. WHITEHEAD, P. J. P. The Clupeoid Fishes described by Lacepede, Cuvier and Valenciennes. Pp. 180; n Plates, 15 Text-figures. 1967. 4. 3. TAYLOR, J. D., KENNEDY, W. J. & HALL, A. The Shell Structure of Mineralogy at the Bivalvia. Introduction. Nuculacea-Trigonacea. Pp. 125; 29 Plates, 77 Text-figures. 1969. 4.50. 4. HAYNES, J. R. Cardigan Bay recent Foraminifera (Cruises of the R.V. Antur) 1962-1964. (In press.) Printed in England by Staples Printers Limited at their Kettering, Northants, establishment MITES\, same data; 6 $, Carmia, Israel, Nov. 16, 1966; I -, Tivon, Israel, May 6, 1966; 2 .., Ein Yahav, Israel, May i, 1968. Hypoaspis integer Berlese, 1911 sensu Samsinak, 1960 Laelaps (Hypoaspis} integer Berlese, 1911, Redia 7 : 186. ? 'Coleolaelaps integer Willmann, 1935, Bull. Mus. R. Hist. nat. Belg. n : 23-25, figs 14-6. Coleolaelaps integer (male) Samsinak, 1960, Cas. dsl. Spol. ent. 57 (3) : 280-82, figs 1-6. FEMALE : Dorsum covered by single dorsal shield (820 pan long and 430 [xm wide) with 36 37 pairs of setae. Of 29 investigated specimens, setae Z3 were completely absent in 19 specimens, unilaterally present in 8 and bilaterally present in 2 speci- mens only. Podonotal setae 12, si, 54-6 are elongate, the longest dorsal setae are Z4 (280 |xm) and a pair of postero-marginal setae (200 |xm) which are inserted on the soft integument. The shield is devoid of distinct ornamentation, the distri- bution and relative lengths -of the setae are shown in fig. 23. Tectum (fig. 25) triangular with denticulate margin. Tritosternum normal with pilose laciniae. Sternal shield (150 [xm long and 150 [xm wide at St2) ornamented with short sternal setae which do not reach the bases of the consecutive setae (fig. 24). Metasternal setae inserted on integument. The large genital shield (distance between genital setae 130 jxm) expands slightly beyond the genital setae and is ornamented. Metapodal shields narrow, kidney- shaped. Anal shield with semicircular anterior border, postanal seta distinctly shorter than paranal setae. The anal shield is flanked posteriorly by a pair of long (300 (xm) setae. The narrow peritreme extends anteriorly to the middle of coxa I. Gnathosoma (fig. 29) with well-sclerotized corniculi and fimbriate internal malae, six rows of tiny deutosternal denticles (about 12 per row). Movable digit of chelicera (fig. 27) bidentate, fixed digit with one large tooth and about 10 sub-equal small denticles. The approximate lengths of the legs (excluding pretarsi) are: I 680 |xm; II 620 (xm; III 580 (xm; IV 960 [xm. Tarsus II (fig. 28) with two dorsal distal blunt spines, with ventral setae markedly stouter than the dorsal setae. Leg IV HYPOASPIS MITES AND BEETLES 77 (fig. 26) with macrosetae on femur (360 ^m), on the genu (ad-\_ 250 (xm, pdi 180 (jon) and tarsus; macrosetae are also present on femur II (270 fxm) and III (260 (Am) . Leg chaetotaxy normal for the genus. 27 FIGS 23-29. Hypoaspis integer Berlese, female. Fig. 23. Dorsum. Fig. 24. Venter. Fig. 25. Tectum. Fig. 26. Leg IV. Fig. 27. Chelicera. Fig. 28. Tarsus II. Fig. 29. Gnathosoma, ventral view. 78 M. COSTA MALE: The male has been described by Samsinak (1960). The ventral sclerotiza- tion is extremely variable, out of 14 male specimens only one had a complete holo- ventral shield, in one specimen this was eroded but the anal shield was still broadly connected to the ventral shield and in 12 specimens, with variously shaped genito- ventral shields, the anal shield was completely separate. In the males the cor- responding macrosetae are longer than in the females. DIFFERENTIAL DIAGNOSIS: The long macrosetae on femora II and III, as well as the two macrosetae on genu IV are good diagnostic characters for this species. Associated with Oryctes nasicornis L. (Scarabaeidae : Dynastinae) and Polyphylla fullo L. (Scarab.: Melolonthinae). NOTES: The original association seems to be with 0. nasicornis, the association with P. fullo appears to be secondary (vide Costa & Hunter, in press). The speci- mens ex P. fullo (the beetles were kindly loaned by the American Museum of Natural History) were collected from beneath the elytra by methods described by Costa & Hunter (op. cit.). MATERIAL: 2 $$, 28 $$, ex Oryctes nasicornis, Bohemia, Liblice, July 16, 1960, coll. and det. K. Samsinak; 5 <$J, 53 ?$ Polyphylla fullo, S. Russia; 3 <$<$, 41 $?, ibid., Prussia; 4c&? 56 $$, ibid., Germany, 1897. Hypoaspis rhinocerotis Oudemans, 1925 Hypoaspis rhinocerotis Oudemans, 1925, Ent. Ber., Amsl. 7 (146) : 30. Coleolaelaps rhinocerotis Oudemans, 1927, Zoo/. Meded. Leiden 10 (4) : 189-193, figs 8-15. FEMALE: Dorsum covered by a single dorsal shield (770-830 (im long and 470- 540 (Jim wide), with 37 pairs of simple setae. Setae si subequal in length with vertical setae (ii) ; the longest podonotal setae being i2, 54-6 (35 being shorter than either 54 or s6). The central dorsal setae, especially on the opisthonotum are short and do not extend to the bases of the consecutive setae. Setae Z4 are the longest dorsal setae (300 (Am), setae J5 are short (30 [xm). The distribution and the relative lengths of the setae are shown in fig. 30. Tectum (fig. 32) triangular with denticulate margin. Tritosternum normal with well developed laciniae. Sternal shield (170 fun long and 185 (Jim wide at St2) only slightly ornamented. Sti distinctly shorter than St2~4 which are long and extend markedly beyond the bases of the consecutive setae (fig. 31). The posterior margin of the shield is irregular. Genital shield (distance between genital setae 130 (i,m) tongue-shaped and nearly devoid of orna- mentation. Metapodal shields narrow and irregular. Anal shield small, postanal seta distinctly shorter than paranal setae. Peritreme extends anteriorly slightly beyond the middle of coxa I, it is free anteriorly and posteriorly. Gnathosoma (fig. 36) with well-sclerotized corniculi and fimbriate internal malae, six rows of deutosternal denticles (12-18 per row). Chelicera (fig. 35) with bidentate movable digit with a large distance between the two teeth, fixed digit slightly curved and sickle shaped with one stout tooth and about 12 small denticles. HYPOASPIS MITES AND BEETLES 79 The approximate lengths of the legs (excluding pretarsi) are: I 750 [xm; II 660 (Am; III 700 [xm; IV 950 (j.m. Tarsus II (fig. 34) with two dorsal blunt spines, its ventral setae being much stouter than its dorsal setae. Leg IV (fig. 33) with macrosetae on femur (270 fxm) and tarsus only, ad\ of the genu being only slightly longer than the remaining setae on the segment. Macrosetae are present also on femora II and III. Leg chaetotaxy normal. FIGS 30-36. Hypoaspis rhinocerotis Oudemans, female. Fig. 30. Dorsal shield. Fig. 31. Venter. Fig. 32. Tectum. Fig. 33. Leg IV. Fig. 34. Tarsus II. Fig. 35. Cheli- cera. Fig. 36. Gnathosoma, ventral view. 8o M. COSTA MALE: Dorsal shield smaller (740 [j,m long and 480 (im wide) than in female, with the same chaetotaxy. The venter (fig. 37) is covered by a well- ornamented holoventral shield with 10 pairs of setae in addition to the regular anal setae. Remaining ventral features as in female. 500, FIGS 37-43. Hypoaspis rhinocerotis Oudemans. Male, Fig. 37. Venter. Fig 38. Leg II. Fig. 40. Chelicera. Deutonymph. Fig. 39. Dorsal shield. Fig. 43. Venter. Protonymph. Fig. 41. Dorsum. Fig. 42. Venter. HYPOASPIS MITES AND BEETLES 81 Movable digit of chelicera (fig. 40) monodentate with long slender spermadactyl which is distally curved. Fixed digit with about 4 teeth. Leg chaetotaxy as in female, leg II (fig. 38) with several stout pointed spine-like setae on femur to tarsus, similar to the condition found in H. krameri (as figured by Evans & Till, 1966). DEUTONYMPH : Dorsal shield (670 [xm long and 380 [xm wide) deeply incised later- ally, chaetotaxy and other features as in female although several central setae are longer (fig. 39). Sternal shield (fig. 43) extends only slightly beyond the posterior margin of coxa IV. A number of small platelets are present on the integument. Remaining characters as in female. PROTONYMPH : The idiosoma (660 (xm long) is covered by two dorsal shields and three pairs of platelets in the mesonotal region. The podonotal shield (365 |xm long and 325 [xm wide) with n pairs of long setae all of which extend beyond the bases of consecutive setae. The opisthonotal shield with 8 pairs of setae, 85, Z4~5 and J5 having the same relative lengths as in the adult. The distribution and relative lengths of the setae are shown in fig. 41. The venter (fig. 42) with a sternal shield with 3 pairs of setae. Peritremes rudimentary. DIFFERENTIAL DIAGNOSIS: The short central dorsal setae and the large sickle- shaped chelicera separate H. rhinocerotis from the preceding species. Associated with Oryctes rhinoceros L. (Scarabaeidae : Dynastinae). MATERIAL: Numerous specimens, ex Oryctes rhinoceros, Apia, W. Samoa, July, 1969; additional specimens from eggs of 0. rhinoceros and laboratory cultures. All the specimens were made available through the courtesy of Mr B. Zelazny and Dr M. J. Stelzer. Hypoaspis athiasae sp. n. FEMALE: Dorsal shield (770-820 [xm long and 490-510 fxm wide) covers most of the dorsum, with 37 pairs of setae. The shield is slightly ornamented, mainly on its posterior part. Setae i2, 54-6 are the longest podonotal setae, 55 being markedly shorter than either 54 or s6. Setae Z4 are the longest dorsal setae (280 |xm), J5 are short (30 [xm). The distribution and the relative lengths of the setae are shown in fig. 44. Tectum (fig. 46) triangular with denticulate margin. Tritosternum with well-developed laciniae. Sternal shield (195 [xm long and 175 [Jim wide at St2) without apparent ornamentation, with long sternal setae which extend beyond the base of the consecutive setae. Posterior margin of shield nearly straight and slightly irregular. Genital shield (distance between genital setae 120 (xm) tongue-shaped and well ornamented. Narrow, kidney-shaped meta- podal shields. The wide peritreme extends anteriorly to the anterior margins of coxa I. The postanal seta is shorter than the paranal setae. Gnathosoma (fig. 50) with well-sclerotized corniculi and fimbriate internal malae, with six rows of deutosternal denticles (10-14 per row). Movable digit of chelicera (fig. 48) bidentate, fixed digit with about 14 small denticles in addition to a larger tooth which is associated with the pilus dentilis. 82 M. COSTA The approximate lengths of the legs (excluding pretarsi) are: I 840 |xm; II 675 fxm; III 710 (xm; IV 800 {xm. Tarsus II (fig. 47) with two dorsal distal blunt spines. Leg IV (fig. 49) with macrosetae on femur (280 fxm) and tarsus FIGS 44-50. Hypoaspis athiasae sp. n., female. Fig. 44. Dorsal shield. Fig. 45. Venter. Fig. 46. Tectum. Fig. 47. Tarsus II. Fig. 48. Chelicera. Fig. 49. Leg IV. Fig. 50. Gnathosoma, ventral view. HYPOASPIS MITES AND BEETLES only, adi of the germ being only slightly longer than the remaining setae of the segment. Macrosetae also present on femora II and III. MALE: The dorsal shield (815 [Ain long and 485 ^m wide) and chaetotaxy as in female. Ventrally the idiosoma is covered by a well-ornamented holo ventral FIGS 51-57. Hypoaspis athiasae sp. n. Male, Fig. 51. Venter. Fig. 52. Leg II. Fig. 54. Chelicera. Deutonymph, Fig. 53. Dorsal shield. Fig. 57. Venter. Proto- nymph, Fig. 55. Dorsum. Fig. 56. Venter. 84 M. COSTA shield, usually with 10 pairs of setae in addition to the regular anal setae (fig. 51). The extent and outlines of the shield may vary asymetrically and with it the chaeto- taxy. The chelicera (fig. 54) with monodentate movable digit which bears a long slender spermadactyl, slightly curved distally. Leg II with pointed spine-like setae on femur to tarsus (fig. 52), similar to the condition in H. krameri (Evans & Till, op. cit.). DEUTONYMPH : Dorsal shield (715 [xm long and 400 (xm wide) deeply incised later- ally. Chaetotaxy similar to that of the female, central setae (mainly i series) notice- ably long. The shield is faintly ornamented mainly on its posterior portion. The distribution and relative lengths of the setae is shown in fig. 53. The anal shield is rounded and the postanal seta is markedly shorter than the paranal setae (fig. 57). PROTONYMPH: The idiosoma (530 [xm long) is covered by two dorsal shields and three pairs of platelets in the mesonotal region. The podonotal shield (350 {xm long and 290 (xm wide) with n pairs of long setae. The opisthonotal shield (120 pun long and 170 (xm wide) with 8 pairs of setae. Setae 85, Z4~5 and J5 have the same relative lengths as in the adult. The distribution and the relative lengths of the setae are shown in fig. 55. The venter (fig. 56) with small sternal shield which has a very indistinct anterior margin. DIFFERENTIAL DIAGNOSIS: This species is closely related to H. rhinocerotis from which it can be separated mainly by its longer central dorsal setae, a character which is even more conspicuous in the deutonymph. NOTES : This species has been collected in large numbers (by Dr C. Athias-Henriot) from soil as well as from eggs of 0. monoceros in the Ivory Coast. It is well known that many dynastine beetles emerge from their puparia during a few days of the year only, usually for a short time before dusk. It may well be that the possibility to collect a large number of the mites from the soil happened after a mass emergence of the beetles which are probably their normal host. MATERIAL: Holotype: $, ex humid soil (Aerodrome), Ivory Coast, July 18, 1969, coll. C. Athias-Henriot. Paratypes: i $ and numerous female specimens ibid. ; 5 $$ Oryctes monoceros, Ivory Coast, 1969. Hypoaspis dubius sp. n. FEMALE: Dorsum covered by a single dorsal shield (640 [xm long and 380 {xm wide), with 37 pairs of simple setae. The shield is finely ornamented mainly on its posterior part. Setae 12, si and 54-6 are longer than the remaining podonotal setae, the longest dorsal setae are Z4 (130 (xm), the shortest J5 (25 |xm). Nearly all the central setae are long and extend beyond the base (or the horizontal level of the bases) of the consecutive setae. The distribution and the relative lengths of the setae are shown in fig. 58. Tectum (fig. 61) triangular with denticulate margin. HYPOASPIS MITES AND BEETLES Tritosternum normal with pilose laciniae. Sternal shield (135 |xm long and 140 |j.m wide at St2) faintly ornamented mainly in its anterior and lateral parts, posterior margin slightly concave to nearly straight. Sti shorter than remaining sternal setae which are long and extend beyond the base of consecutive setae. The tongue- FIGS 58-64. Hypoaspis dubius sp. n., female. Fig. 58. Dorsal shield. Fig. 59. Venter. Fig. 60. Leg IV. Fig. 61. Tectum. Fig. 62. Tarsus II. Fig. 63. Chelicera. Fig. 64. Gnathosoma, ventral view. 86 M. COSTA shaped genital shield (distance between genital setae 105 (xm) is faintly ornamented (fig. 59). Metapodal shields narrow and elongate. The postanal seta is shorter than the paranal setae. The peritreme extends anteriorly slightly beyond the middle of coxa I. Gnathosoma (fig. 64) with well-sclerotized corniculi and fimbriate inner malae, six rows of deutosternal denticles (14-18 per row). Movable digit of chelicera (fig. 63) bidentate, fixed digit with about 8 small denticles in addition to one larger tooth. The approximate lengths of the legs (excluding pretarsi) are: I 640 (xm; II 490 (Jim; III 490 {xm; IV 690 (xm. Tarsus II (fig. 62) with two dorsal distal blunt spines. Leg IV (fig. 60) with macrosetae on the femur (145 |xm) and tarsus only. Macrosetae are present also on femora II and III. MALE: Unknown. DIFFERENTIAL DIAGNOSIS: This species is characterized by its small size and short Z4 and ad\ of femur IV. NOTES : The status of this species is uncertain and it might be a hybrid. Originally it was introduced from the Ivory Coast, ex Oryctes monoceros. It has become established in W. Samoa and occurred together with H. rhinocerotis on a field- collected 0. rhinoceros (coll. Dr M. J. Stelzer). In view of the fact that Hypoaspis athiasae sp. n. has also been collected from 0. monoceros, a misdetermination of the African host cannot be ruled out, since over a dozen species of Oryctes exist in central and western Africa. MATERIAL : Holotype : $, laboratory reared, Apia, W. Samoa, July 1969, laboratory colony started from specimens ex Oryctes monoceros, Ivory Coast. Paratypes: many ibid. ; 6 -$, 0. rhinoceros, Apia, W. Samoa, Sept. 1969, coll. Dr M. J. Stelzer. Hypoaspis remilleti sp. n. FEMALE: Dorsum covered by single dorsal shield (870 |xm long and 560 fxm wide) leaving a wide strip of uncovered integument. The shield bears 36 pairs of setae (53 missing, compare Hypoaspis phyllognathi sp. n.) of three different types: minute setae (about 20 [xrn long: 13-5, Z2-3, J series px2~3, Zi-3 and Si) ; extremely long setae (i2, 54-6 and Z4 which are 400 ^m long) and 'normal' marginal setae. The posterior elongate integumental setae are only 180 jxm long. The distribution and the relative lengths of the setae are shown in fig. 65. Tectum (fig. 66) triangular with denticulate margin. Tritosternum normal with pilose laciniae. Sternal shield (160 (xm long and 170 [xm wide at St2) ornamented, with irregular posterior margin (fig. 67). The sternal setae are long, extending beyond the bases of the consecutive setae. The well- ornamented genital shield (distance between genital setae 150 (xm) expands slightly beyond coxae IV. Anal shield with round anterior margin, postanal seta shorter than paranal setae. The peritreme extends anteriorly to or slightly beyond the anterior margin of coxa I, it is free both anteriorly and posteriorly. HYPOASPIS MITES AND BEETLES Gnathosoma (fig. 71) with well-sclerotized corniculi and fimbriate internal malae, six rows of minute deutosternal denticles. Movable digit of chelicera (fig. 68) bidentate, fixed digit with about 12 small denticles in addition to one larger tooth. FIGS 65-71. Hypoaspis remilleti sp. n., female. Fig. 65. Dorsum. Fig. 66. Tectum. Fig. 67. Venter. Fig. 68. Chelicera. Fig. 69. Tarsus II. Fig. 70. Leg IV. Fig. 71. Gnathosoma, ventral view. 88 M. COSTA The approximate lengths of the legs (excluding pretarsi) are: I 890 pan; II 740 pan; III 800 pan; IV noo pan. Tarsus II (fig. 69) with two blunt dorsal subterminal spines. Leg IV (fig. 70) with macrosetae on the femur (380 pan) and tarsus only. Leg chaetotaxy normal. MALE : Dorsal shield as in female. The venter is covered by a holoventral shield with 10 pairs of setae in addition to the regular anal setae. Leg II with pointed spine-like ventral setae on femur to tarsus. Chelicera with slender spermodactyl, distally curved. DIFFERENTIAL DIAGNOSIS : This species can be easily recognized by its very short central setae and its long antero-lateral setae. It differs from closely related 'Coleolaelaps' proximus Cooreman, 1948 mainly in the shape of the sternal shield which is markedly longer than wide in C. proximus. Associated with Heteroligus meles Billb. (Scarabaeidae : Dynastinae). MATERIAL: Holotype: ., ex Heteroligus meles Billb., nr. Abidjan, Ivory Coast, 1969, coll. Dr M. Remillet. Paratypes: numerous specimens including males with the same data. Lucanaspis gen. n. General facies of female as in Hypoaspis with the following differences: Thirty- three pairs of dorsal setae of which i2, 54 and Z4 are very long. Sternal shield markedly wider than long. Legs stumpy and shorter than length of dorsal shield. Tarsus II with two subterminal stout and pointed setae. MALE: Unknown. Lucanaspis brachypedes sp. n. FEMALE: Dorsum covered by a single dorsal shield (545 pan long and 360 pan wide), devoid of ornamentation, with 33 pairs of simple setae. The podonotal setae (17 pairs) are very short (10-15 pan) with the exception of ii and si (85 pan), 12, 54 (120 pan), 55 and s6 (60 pan). The opisthonotal setae (16 pairs) are short with the exception of Z4 (155 pan) which are the longest dorsal setae. The distri- bution and the relative lengths of the setae are shown in fig. 72. Tectum (fig. 78) triangular with denticulate margins. Tritosternum normal with pilose laciniae. Sternal shield (75 pan long and 130 pan wide at St2) with distinct anterior concave margin and slightly irregular concave posterior margin. The shield is devoid of distinct ornamentation. The first sternal pores are very large and close to each other. Metasternal setae inserted on the integument, the associated pore may be incorporated into the sternal shield (fig. 73). Genital shield (distance between genital setae 95 pan) broad and tongue-shaped. Anterior margin of anal shield semicircular, paranal setae slightly longer than postanal seta. The shield is flanked by two pairs of slightly longer and stouter ventral setae. Metapodal shields elongate, oval. The peritreme extends anteriorly nearly to the anterior margin of coxa I, it is free both anteriorly and posteriorly. HYPOASPIS MITES AND BEETLES Gnathosoma (fig. 75) with well-sclerotized corniculi and fimbriate internal malae, with six rows of tiny deutosternal denticles. Movable digit of the chelicera (fig. 74) bidentate, fixed digit with three medium sized distal teeth and about seven small proximal denticles. 74 76 FIGS 72-78. Lucanaspis brachypedes gen. n., sp. n., female. Fig. 72. Dorsal shield. Fig- 73- Venter. Fig. 74. Chelicera. Fig. 75. Gnathosoma, ventral view. Fig. 76. Tarsus II. Fig. 77. Leg IV. Fig. 78. Tectum. go M. COSTA The approximate lengths of the legs (excluding pretarsi) are: I 520 (xm; II 450 (jim; III 440 (Jim; IV 540 (Jim. Leg chaetotaxy normal as in free-living laelapids. Macrosetae are present on femora II-IV (on femur IV 165 [xm) and tarsus IV (fig. 77). Tarsus II (fig. 76) with two subterminal pointed stout setae. MATERIAL: Holotype: , ex lucanid beetle, nr. Abidjan, Ivory Coast, Oct. 1969, coll. Dr M. Remillet. Paratypes: 8 $?, same data. Dynastaspis gen. n. General facies of female as in Hypoaspis with the following differences: 32 pairs of dorsal setae (18 podonotal and 14 opisthonotal) with 54-6 and Z^ very long and 'wavy'. Tectum with nondenticulate margin. Four macrosetae of a different homology on tarsus IV: adz, alz, Ph and ^^3 (instead oipdz, pd$ and adz in Hypoaspis s. str.), pdz being proximally inserted to adz (as distinct from being at the same level in Hypoaspis s. str.). Tarsus II with two subterminal pointed stout setae. Orna- mentation of genital shield different from that found in Hypoaspis. MALE: Unknown. Dynastaspis walhallae sp. n. FEMALE : A single dorsal shield (1030 (xm long and 580 jxm wide) covers the dorsum incompletely, faintly ornamented with a scale-like pattern (fig. 86), with 32 pairs of simple setae (fig. 79). Eighteen pairs of podonotal setae, Z3 absent, 57 on the integument and 14 pairs of opisthonotal setae (84 and px2~3 absent). Medial setae mainly short (e.g. 14 45 (Jim), 54-6 long and 'wavy', Z^ being the longest dorsal setae (400 (xm). Tectum (fig. 83) with nondenticulate margin and broad median projection. Tritosternum normal with 'pilose laciniae. Sternal shield (140 (jim long and 195 (xm wide at St2), well ornamented with concave anterior margin and deeply concave posterior margin (fig. 80, 8ia-c). Sternal setae long, St2 extending beyond posterior margin of shield. The shape of the sternal shield is variable, mainly in the lateral outlines (figs 8ia-c, in 8ic one Sti completely missing). Genital shield (distance between genital setae 155 [xm) tongue-shaped, with very distinct ornamentation which is completely different from that found in species of Hypoaspis s. str. Metapodal shields small and irregular, several small platelets present at the same level. Anal shield nearly triangular in shape, postanal seta shorter than the paranal setae. The peritreme extends anteriorly slightly beyond the posterior margin of coxa I, it is free anteriorly and posteriorly. Gnathosoma (fig. 87) with well-sclerotized corniculi and fimbriate internal malae, with six rows of deutosternal teeth (10-14 P er row). Movable digit of the chelicera (fig. 85) bidentate, fixed digit with about eight denticles of different sizes and shapes. The approximate lengths of the legs (excluding pretarsi) are: I 1010 jxm; II 850 (xm; III 870 [xm; IV 1190 jxm. Tarsus II (fig. 84) with pointed setae only, leg IV (fig. 82) with macrosetae on femur (400 (xm) and four macrosetae (adz, <*h, HYPOASPIS MITES AND BEETLES 91 plz, pdz) on the tarsus with pdz proximally inserted. Otherwise leg chaetotaxy normal. FIGS 79-87. Dynastaspis walhallae gen. n., sp. n., female. Fig. 79. Dorsum. Fig. 80. Venter. Fig. 8ia-c. Variations in shape of sternal shield. Fig. 82. Leg IV. Fig. 83. Tectum. Fig. 84. Tarsus II. Fig. 85. Chelicera. Fig. 86. Ornamentation of dorsal shield. Fig. 87. Gnathosoma, ventral view. 92 M. COSTA MATERIAL: Holotype: -, ex larvae of Dynastes tytius Linn. (Scarabaeidae : Dynastinae), dead Black Locust Tree, Walhalla, South Carolina, August 1969, coll. M. Palmer. Paratypes: 8 .-, same data as type. NOTES: The occurrence of this species on larvae of Dynastes tytius is rather sur- prising as Sikora (1968) reported a different species of 'Coleolaelaps' from the adult of D. tytius. It may be that the host association of D. walhallae is accidental, the true host being another woodboring beetle. Angosomaspis gen. n. FEMALE: Single dorsal shield with a large number (over 100) of minute (15- 20 (jun) setae, ventral integument with about 30 pairs of long, very attenuated whip-like setae. Macroseta of femur IV exceedingly long, extending beyond middle of tarsus IV, only one macroseta (pd%) on tarsus IV. Long macroseta also on femora II and III. Tarsus II with two subterminal spine-like setae which are originally pointed, though usually the tip is broken off, leaving a sharp (not blunt) end. Fixed digit of chelicera with about a dozen sharp, needle-shaped denticles proximal to the pilus dentilis. Remaining characters similar to Hypoaspis. MALE: Unknown. Angosomaspis multisetosus sp. n. FEMALE: Dorsum covered by single dorsal shield (800 (jon long and 480 (xm wide) covering most of the dorsum. Over a 100 minute setae (15-20 (jun) are distri- buted on the shield, obscuring any paired arrangement. Only four pairs of anterior setae and one pair of posterior marginal setae are of 'normal' Hypoaspis-type length and appearance (60-95 [Am). The distribution and the relative lengths of the setae are shown in fig. 88. The laterodorsal chaetotaxy is obscured by a row of setae which are inserted on the soft integument between the narrow peritrematal shield and the dorsal shield, in mounted specimens this part of the integument in- variably folds below the dorsal shield and only the examination of the mite in lateral position reveals that these setae are not inserted on the shield. The dorsal shield is finely granulated but shows no ornamentation. Tectum (fig. 91) triangulate with margins partly or totally denticulate. Tritosternum normal with long pilose laciniae. Sternal shield (190 {xm long and 170 fxm wide at St2) with straight anterior and posterior margin, finely granu- lated surface without ornamentation. Sternal setae long (e.g. St2 150 ^m) and whiplike, very attenuated and coming to a fine end, they are similar to the remaining (about 30 pairs) ventral setae. Genital shield large and elongate (distance between genital setae 145 (Am), devoid of ornamentation. Anal shield with slightly curved anterior margin, paranal setae longer than postanal seta. The peritreme extends anteriorly slightly beyond the middle of coxa I, it is accompanied by a very narrow external and internal peritrematal shield which is free both anteriorly and posteriorly. HYPOASPIS MITES AND BEETLES 93 Gnathosoma (fig. 94) with well-sclerotized corniculi and fimbriate internal malae with six rows of minute deutosternal denticles. Movable digit of chelicera (fig. 92) bidentate, fixed digit with about a dozen fine pointed denticles proximal to the pilus dentilis. 92 FIGS 88-94. Angosomaspis multisetosus gen. n., sp. n., female. Fig. 88. Dorsum. Fig. 89. Venter. Fig. 90. Leg IV. Fig. 91. Tectum. Fig. 92. Chelicera. Fig. 93. Tarsus II. Fig. 94. Gnathosoma, ventral view. 94 M. COSTA The approximate lengths of the legs (excluding pretarsi) are: I 760 (xm; II 650 (j.m; III 680 (Jim; IV 890 [xm. Long macrosetae on femora II-IV, ad\ of femur IV (490 [xm) extending beyond the middle of the corresponding tarsus. Only one macroseta (pdz) on tarsus IV (fig. 90). Tarsus II (fig. 93) with two sub- terminal pointed spine-like setae, usually the tip is broken off leaving a sharp jagged surface. MATERIAL: Holotype: $, ex Angosoma centaurus (Scarabaeidae : Dynastinae), nr. Abidjan, Ivory Coast, 1969, coll. Dr M. Remillet. Paratypes: 20 $?, same data as type. Promacrolaelaps gen. n. FEMALE : Large mites with a convex dorsal shield which covers the sides and the dorsum. Thirty-one pairs (17 podonotal and 14 opisthonotal) of long setae are inserted on the shield. Genital shield large, expanded posterior to the genital setae. Macrosetae present on femora I-IV, genua III-IV and single macroseta on tarsus IV. Tarsus II without spine-like or spur-like setae. Gnathosoma with seven rows of deutosternal denticles, fixed digit of chelicera with six medium-sized sharp teeth proximal to the pilus dentilis. MALE: Unknown. Promacrolaelaps hunteri sp. n. FEMALE: The dorsum is completely covered by a large convex dorsal shield (1260 |xm long and 820 [xm wide) which covers the mite also laterally. Thirty-one pairs of simple long setae (17 podonotal and 14 opisthonotal) are inserted on the shield. Setae Z4 are the longest (510 [xm) dorsal setae. The shape of the shield as well as the lateral displacement of many setae did not permit positional homo- logization of most setae, their distribution and relative lengths being shown in fig. 95. Tectum (fig. 97) with denticulate margin. Tritosternum normal, with pilose laciniae. Sternal shield (170 (xm long and 210 [xm wide at St2) wider than long, with long sternal setae extending considerably beyond the bases of consecutive setae. The shield is ornamented and granulate, its anterior and posterior margins are straight to slightly concave. Genital shield (fig. 96) large (distance between genital setae 220 (xm), well ornamented and expanding posterior to the genital setae. Metapodal shields small and irregular. Anal shield with rounded anterior margin, postanal seta slightly longer than paranal setae. The anal shield is flanked by a pair of long (370 [xm) setae. Approximately 17 pairs of setae are inserted on the integument posterior to coxae IV. The peritreme extends anteriorly beyond the middle of coxa I and is free both anteriorly and posteriorly. Gnathosoma (fig. 100) with well-sclerotized corniculi and fimbriate internal malae, seven rows of deutosternal teeth (10-20 per row) are present. Movable digit of the chelicera (fig. 99) bidentate, fixed digit with six well-defined, medium- sized sharp teeth proximal to the pilus dentilis. HYPOASPIS MITES AND BEETLES 95 The approximate lengths of the legs (excluding pretarsi) are: I 980 (xm; II 850 fxm; III 830 (Jim; IV 930 [xm. Macrosetae present in femora I and II (pdi), III and IV (ad\, 450 (j.m long on femur IV) ; on genua III and IV (ad\, 450 (xm long on genu IV) and a single macroseta (pdz 250 yjri) on tarsus IV (fig. 101). 'lil/'MN '' ' '' 1 ' N ; KiVV.M v ' III > 100 FIGS 95-101. Promacrolaelaps hunteri gen. n., sp. n., female. Fig. 95. Dorsal shield. Fig. 96. Venter. Fig. 97. Tectum. Fig. 98. Tarsus II. Fig. 99. Chelicera. Fig. 100. Gnathosoma, ventral view. Fig. 101. Leg IV. 96 M. COSTA Tarsus II (fig. 98) with simple pointed setae only, the ventral setae being slightly stouter. This species is named in honour of my friend and colleague Dr P. E. Hunter (Department of Entomology, The University of Georgia). MATERIAL: Holotype: 9 ex Promacrus bimucronatus Pallas (Scarabaeidae : Euchirinae), Tivon, Israel, August 20, 1967, coll. M. Costa. Paratypes: 5 $, same data as type. DISCUSSION The vague early definition of genera and species can often be applied to several different taxa subsequently discovered. In the present study the early descriptions and figures of Hypoaspis krameri Can. apply equally well to H. krameri Can. sensu Evans & Till (1966), H. neokrameri sp. n. ; H. pentodoni sp. n. ; H . phyllognathi sp. n. ; H. integer Berlese sensu Samsinak (1960), etc. Vitzthum (1940-43) records 'H. krameri' from the following hosts: 0. nasicornis, Cetonia aurata, Potosia floricola, Pentodon punctatus, Polyphylla fullo apparently placing under H. krameri several species with a higher degree of host specificity than assumed by him. The un- certainty of the determination of mites of the Hypoaspis and Coleolaelaps com- plexes by Berlese has been discussed by Costa & Hunter (op. cit.). In view of this early species confusion and the fact that their material was obtained from a new host, namely Lucanus sp., it seems rather uncertain that H. krameri Can. sensu Evans & Till is actually conspecific with the type species, it undoubtedly agrees with the description and definition of Hypoaspis s. str. However, in order to avoid additional confusion on the subject, the decision made by Evans & Till is accepted here until the type (? lost) or topotypic material from the type host can be examined. The definition of Hypoaspis s. str. as conceived here, as well as the definition of Coleolaelaps Berl. as conceived by Costa & Hunter (op. cit.) will necessitate the transfer of many species from the latter genus to Hypoaspis s. str., this being, however, outside the scope of the present study. Being convinced that host-association is just as good a character for taxonomic discrimination as morphological characters, I have designated four new genera of which the first two (Lucanaspis and Dynastaspis) are closer related to Hypoaspis s. str. than the remaining two (Angosomaspis and Promacrolaelaps) . As additional species are expected for these genera, the generic definitions are short and not very rigorous, allowing amendment for the inclusion of new species. The generic delimitations being to a large degree a matter of personal opinion, I prefer this treatment to the lumping of many different forms for 'phylogenetic' reasons. The juvenile forms of Hypoaspis s. str. are described here for the first time (H. rhinocerotis and H. athasiae) and they agree to the general type of the free-living laelapids (vide H. aculeifer (Can.), Evans & Till, op. cit.). I should like to point out the 'long-haired' nature of the juveniles: the protonymph having longer setae than the deutonymph and this having longer setae than the adult. The occurrence of macrosetae on the idiosoma as well as on the legs, mainly leg IV, seems to have arisen independently in various mesostigmatic mites associated HYPOASPIS MITES AND BEETLES 97 with arthropods. The function of the macrosetae is at present unknown, it may be mainly thigmotactic and concerned with finding the right location on the host, or it may also serve to avoid overcrowding on the host, assuring each mite its own volume of space. SUMMARY The following species and genera of mites associated with phytophagous lamellicorn beetles are described and figured: Hypoaspis neokrameri sp. n. ($); Hypoaspis pentodoni sp. n. ($, <) ; Hypoaspis phyllognathi sp. n. ($) ; Hypoaspis integer Berlese ($) ; Hypoaspis rhinocerotis Ouds. ($, $, dn, pn) ; Hypoaspis athiasae sp. n. ($, <, dn, pn) ; Hypoaspis dubius sp. n. ($) ; Hypoaspis remilleti sp. n. (?) ; Lucanaspis brachypedes gen. n., sp. n. ($) ; Dynastaspis walhallae gen. n., sp. n. ($) ; Angosomaspis multisetosus gen. n., sp. n. (?) ; Promacrolaelaps hunteri gen. n., sp. n. ($). ACKNOWLEDGEMENTS I would like to thank the following for the loan or presentation of material used in this study: Dr C. Athias-Henriot (Laboratoire du Sol de I.N.R.A., Dijon); Dr Lee H. Herman, Jr. (American Museum of Natural History, New York); Dr M. Remillet (O.R.S.T.O.M., Centre d'Adiopodoume, Abidjan, Ivory Coast); Dr K. Samsinak (Entomological Institute of the Czechoslovak Akademy of Sciences, Prague) ; Dr M. J. Stelzer and Mr B. Zelazny (U.N./S.P.C. Rhinoceros Beetle Project, Apia, Western Samoa). I am grateful to Dr F. Pegazzano (Stazione di Entomo- logia Agraria, Florence) for information concerning specimens in the Berlese col- lection. It is my pleasure to express greatful thanks to Dr P. E. Hunter (Department of Entomology, The University of Georgia, Athens) for his generous hospitality, his continuous interest and for his criticism of parts of the manuscript. This study was made while holding a Senior Foreign Scientist Fellowship of the National Science Foundation at the Department of Entomology, The University of Georgia. REFERENCES COSTA, M. & HUNTER, P. E. (in press). The genus Coleolaelaps Berlese, 1914 (Acarina: Meso- stigmata) . EVANS, G. O. 1958. A Review of the Laelaptid Paraphages of the Myriapoda with descriptions of three new species (Acarina: Laelaptidae) . Parasitology 45 : 352-368. 1963. Observations on the chaetotaxy of the legs in the free-living Gamasina (Acasi : Mesostigmata) . Bull. Brit. Mus. nat. Hist. (Zool.). 10 (5) : 275-303. EVANS, G. O. & TILL, W. M. 1966. Studies on the British Dermanyssidae (Acari: Mesostig- mata). Pt II Classification. Bull. Brit. Mus. nat. Hist. (Zool.). 14 (5) : 109-370. GRANDI, G. 1925. Contributo alia conoscenze biologica e morphologica di alcuni Lamellicorni fillifagi e descrizione di una nuova specie di Acaro. Boll. Lab. Zool. gen. agr. R. Scuola Agric. Portici 18 : 159-224. 98 M. COSTA HUNTER, P. E. & COSTA, M. (in press). Gymnolaelaps shealsi n. sp. (Acarina: Mesostigmata) associated with the imported fire ant. SAMSINAK, K. 1960. Kurze Bemerkungen uber Mesostigmata (Acari). Cas. 6sl. Spol. ent. 57 (3) : 275-284. SIKORA, W. B. 1968. A review of the genus Coleolaelaps Berlese, 1914 with descriptions of three new species (Acarina: Mesostigmata). M.S. Thesis, University of Georgia, Athens, Georgia, U.S.A. pp. 43. VITZTHUM, H. 1940-43. Acarina in H. G. Bronn (ed.), Klassen und Ordnungen des Tierreiches. Vol. 5, Part 5, Book 5, ion pp., Leipzig. Dr M. COSTA, M.Sc., Ph.D. KIBBUTZ MISHMAR HAEMEK ISRAEL A LIST OF SUPPLEMENTS TO THE ZOOLOGICAL SERIES OF THE BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY) 1. KAY, E. ALISON. Marine Molluscs in the Cuming Collection British Museum (Natural History) described by William Harper Pease. Pp. 96; 14 Plates. 1965. (Out of Print.) 3.75. 2. WHITEHEAD, P. J. P. The Clupeoid Fishes described by Lacepede, Cuvier and Valenciennes. Pp. 180; n Plates, 15 Text-figures. 1967. 4. 3. TAYLOR, J. D., KENNEDY, W. J. & HALL, A. The Shell Structure of Mineralogy at the Bivalvia. Introduction. Nuculacea-Trigonacea. Pp. 125; 29 Plates, 77 Text-figures. 1969. 4.50. 4. HAYNES, J. R. Cardigan Bay recent Foraminifera (Cruises of the R.V. Antur) 1962-1964. (In press.) Printed in England by Staples Printers Limited at their Kettering, Northants, establishment PI97J THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS P. E. GIBBS BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY) ZOOLOGY Vol. 21 No. 5 LONDON : 1971 THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS BY PETER EDWIN GIBBS Marine Biological Association of the U.K., Plymouth Pp. 99-211; 17 Text-figures BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY) ZOOLOGY Vol. 21 No. 5 LONDON: 1971 THE BULLETIN OF THE BRITISH MUSEUM (NATURAL HISTORY), instituted in 1949, is issued in five series corresponding to the Departments of the Museum, and an Historical series. Parts will appear at irregular intervals as they become ready. Volumes will contain about three or four hundred pages, and will not necessarily be completed within one calendar year. In 1965 a separate supplementary series of longer papers was instituted, numbered serially for each Department. This paper is Vol. 21, No. 5 of the Zoological series. The abbreviated titles of periodicals cited follow those of the World List of Scientific Periodicals. World List abbreviation Bull. Br. Mus. not. Hist. (Zool.). Trustees of the British Museum (Natural History), 1971 TRUSTEES OF THE BRITISH MUSEUM (NATURAL HISTORY) Issued 21 September, 1971 Price 3-55 THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS By P. E. GIBBS CONTENTS Page SYNOPSIS ........... ioi INTRODUCTION ........ . ioi GENERAL ACCOUNT .......... 102 COMPOSITION OF THE POLYCHAETE FAUNA AND ITS ZOOGEOGRAPHICAL AFFINITIES .......... 104 ECOLOGICAL OBSERVATIONS Littoral survey . . . . . . . . . in Dredge survey of Marovo Lagoon . . . . . . 114 Commensal polychaetes . . . . . . . . 116 Brackish water and terrestrial species . . . . . 117 Spawning of Eunice (Palola) siciliensis . . . . . 118 SYSTEMATIC ACCOUNT . . . . . . . . . 119 REFERENCES ........... 205 SYNOPSIS An account of the polychaete fauna of the Solomon Islands (western Pacific Ocean) is given, based on a large collection which was obtained during the Royal Society Expedition in 1965. A total of 220 species are recorded. Two new genera (Family Nereidae), 13 new species and 3 new subspecies are described. The zoogeographical affinities of the fauna are analysed and certain ecological aspects discussed. INTRODUCTION As pointed out by Knox (1958), the polychaetes of the Pacific Islands are poorly known and much work remains to be done before a relatively complete bio- geographical analysis can be made. Apart from reports on small collections or individual families, comprehensive accounts of the polychaetes from any of the island groups in the tropical west Pacific regions are few. Augener (19270) records 47 species from New Britain and Fauvel (1947) describes about 100 species from New Caledonia. The fauna of the Marshall Islands is comparatively well known with 131 species recorded as a result of the work of Hartman (1954) and, more recently, of Reish (1968). The Solomon Islands are situated between the latitudes of 5S and 12 S and between the longitudes of 155 E and 163 E. From the zoogeographical viewpoint these islands are of great interest since they lie between the faunistic centre of the 102 P. E. GIBBS Indo-west-Pacific region, the Malay Archipelago, and the more distant islands of the Central Pacific. Thus, one of the primary aims of the Expedition organized by the Royal Society of London in 1965 was to determine the biogeographical relationships of these islands with the adjacent regions. As a member of the Marine Party of this Expedition the author spent five months, from July to December, investigating the polychaete fauna and this paper is an account of the ecological and faunistic observations that were made during this period. I am indebted to the Royal Society, Professor E. J. H. Corner, F.R.S., (Expedition Leader) and Professor J. E. Morton (Leader of the Marine Party) for the opportunity to participate in the Expedition to the Solomon Islands in 1965. For their help in the field I have to thank the members of the Marine Party, particularly Dr. D. R. Stoddart, Captain S. B. Brown and crew of the A. K. Maroro, and our native assistants, especially Ini Munamaori. I am also grateful to Wilson Ifunaoa for providing a valuable collection of the 'palolo' rising from Fanalei, Malaita. For their kind assistance and helpful advice in the identification of various specimens and families, I have to thank Dr. Olga Hartman (two new genera of Nereidae), Dr. Minoru Imajima (Syllidae), Dr. Charlotte Mangum (Maldanidae) and Professor G. P. Wells (Abarenicola) . Other groups were identified by Dr. P. Bergquist (Porifera), Miss A. Clark (Echinodermata) and Dr. S. J. Edmonds (Sipunculoidea). I am also indebted to Dr. J. D. George for the loan of specimens from the collections of the British Museum (Natural History) . GENERAL ACCOUNT The Marine Party of the Expedition was based and carried out investigations on Guadalcanal, in the Florida Islands (Nggela Group), Russell Islands and New Georgia Group (for a detailed account of the Expedition, see Corner, 1969). In these areas, collections of polychaetes were obtained from the following localities (see figs i and 2) : western end of Guadalcanal - Komimbo Bay, Cape Esperance and Naro Bay ; north coast of Guadalcanal - Mamara Point, Honiara and Lunga Point ; eastern end of Guadalcanal (Marau Sound) - Graham Point, Fintry Point, Marauni- bina Island, Pigeon Island, and Lauvie Island ; Florida Islands - Kokomtambu Island, Tetel (or Gaskell) Island, Nggela (or Florida) Island and Haroro; Russell Islands (Banika Island) - Yandina, Sifola and Lingatu ; New Georgia Group (Marovo Lagoon) - Matiu Island, Pirikale Island, Paleki Island and Batuona (or Wickham) Island. Additional collections were made at Gizo Island (New Manra) and on Malaita - Auki Harbour, Kalota Island, Alite Harbour and at the southern end of Maramasike Passage. The polychaete fauna of the moderate to very exposed coral reef platforms consists chiefly of coral-boring and crevice-dwelling species. To obtain such species it is necessary to break open the coral rock with hammer and chisel and then care- fully extract the worms from their burrows or from crevices using forceps. Those species living amongst the algal cover or chaetopterid tubes are best obtained by dissecting and then washing these materials. Investigations of these habitats were THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 103 FIG. i. Map of the Solomon Islands showing collection localities mentioned in the text. Insets - Marau Sound (left) and parts of the Russell Islands and Florida Islands (right). io 4 P. E. GIBBS made at (collection dates in brackets) Mamara Pt. (24.viii), Sifola (2.ix), Lingatu (19. x), Matiu and Paleki Is. (3-7.vii and 27-3i.viii), Batuona I. (3-ix) and at New Manra (4-5 .ix). Further collections were made at Kokomtambu I. (2.vii) and at Maramasike Pg. (26.xi). Beachrock fauna was investigated at Lauvie I. (iS.ix and 4 .x). On the more sheltered shorelines a wide range of sedimentary deposits was studied. The larger species of the infauna were obtained by digging and the smaller species by sieving samples of the deposit through 0-5, i-o or 2-0 mm mesh, the mesh size depending on the grade of the sediment. Investigations of the infauna inhabiting a variety of deposits, ranging from thick mud to shell gravel and coral debris, were carried out at Tetel I., Haroro and Nggela I. (5-io.vii and 24-2g.vii), Komimbo Bay, Cape Esperance and Naro Bay (i8-2O.vii and i6-2i.viii), Graham Pt., Fintry Pt. and Maraunibina I. (i7.ix-io.x). Small collections were also made at Yandina (i8.x) and Honiara (28. xi). In addition to the above studies, further species were obtained from a brackish water lagoon at Lunga Point near the mouth of the Lunga River (g.ix-n.ix) and from encrusting organisms, particularly sponges, on wharf piles at Yandina (i9-20.x and 5.xi). At a number of the localities mentioned above and including Auki Hr. and Kalota I. (20-22. xi) commensal polychaetes were discovered. It was not possible for the author to be present at a rising of the 'palolo' but a small collection of the spawning that took place at Fanalei on 2~3.xi.66 was kindly forwarded by Wilson Ifunaoa. Dredging operations were confined to the New Georgia Group where a survey of the benthos of Marovo Lagoon was carried out during the period 22.x-i4.ix in conjunction with the studies of Dr. D. R. Stoddart. The nomenclature used in this paper is that of Hartman (1959, 1965) although later revisions by various authors have been followed. The classification used by Day (1967) has been adopted. The usage of the place-names in the Solomon Islands is that given on the Directorate of Overseas Survey Map (i : 1,000,000). Other names are taken from 'the Admiralty Charts or are local names, the spelling of which must be regarded as provisional. The collections, including the type specimens, have been deposited in the British Museum (Natural History). COMPOSITION OF THE POLYCHAETE FAUNA AND ITS ZOOGEOGRAPHICAL AFFINITIES The collection of polychaetes from the Solomon Islands comprises over 2000 specimens and is composed of 220 species.* Of this total, 88 (40%) of the species are represented by only one or two specimens. Thus the actual number of species in the fauna must be much higher, perhaps as high as 400, since probably many of the smaller and less conspicuous species, including many of the syllids as well as the paraonids and spirorbids, were overlooked in the field. The species composition of the fauna by families is given in Table i. The errantiate families Aphroditidae (24 species), Eunicidae (22) and Syllidae (20) are well represented and in total account * See Appendix THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 105 for about one-half of the errant species. Sedentary species are fewer (97 out of the total of 220) with the family Spionidae (15) containing the most species. In the TABLE i The species composition of the Solomon Islands fauna by families. Family No. of species Aphroditidae 24 Palmyridae 3 Amphinomidae 10 Phyllodocidae 13 Pilargidae 2 Hesionidae 4 Syllidae 20 Sphaerodoridae i Nereidae 16 Nephtyidae 3 Lacydoniidae i Glyceridae 4 Eunicidae 22 Orbiniidae 2 Spionidae 15 Magelonidae 2 Trochochaetidae 2 TOTAL Family No. of species Chaetopteridae Cirratulidae Cossuridae 6 5 i Flabelligeridae Scalibregmidae Opheliidae Sternaspidae Capitellidae Arenicolidae i 2 5 i 7 i Maldanidae 8 Oweniidae Sabellariidae 4 2 Pectinariidae I Ampharetidae Terebellidae 2 IO Sabellidae II Serpulidae 9 220 collection, two new genera, namely Cryptonereis n.gen. and Solomononereis n.gen. (Family Nereidae), 13 new species and three new subspecies are present. The new species and subspecies are the following: Family Aphroditidae Family Hesionidae Family Nereidae Family Nephtyidae Family Eunicidae Family Spionidae Family Trochochaetidae Family Flabelligeridae Family Opheliidae Family Oweniidae Family Terebellidae Hololepidella ophiuricola n.sp. Lepidasthenia guadalcanalis n.sp. Gyptis maraunibinae n.sp. Cryptonereis malaitae n.gen., n.sp. Solomononereis marauensis n.gen., n.sp. Nephtys (Aglaophamus) munamaorii n.sp. Eunice marovoi n.sp. Dispio maroroi n.sp. Polydorella novaegeorgiae n.sp. Prionospio tetelensis n.sp. Scolelepis squamata mendanai n. subsp. Poecilochaetus serpens honiarae n. subsp. Diplocirrus glaucus orientalis n. subsp. Ophelia koloana n.sp. Myriochele heruensis n.sp. Pista dibranchis n.sp. io6 P. E. GIBBS The species collected in the Solomon Islands are listed in Table 2. From the material three species - all maldanids - can be identified to the subfamily level only, 17 are referable to their genus and a further six can be given near identifications to comparable species. Excluding these species and also the new species and sub- species a total of 178 species is available for analysis. TABLE 2 List of species taken in the Solomon Islands. APHRODITIDAE Gastrolepidia clavigera Schmarda Harmothoe nigricans Horst Harmothoe sp. Hololepidella nigropunctata (Horst) H . ophiuricola n.sp. Iphione muricata (Savigny) Lepidasthenia elegans (Grube) L. maculata Potts L. guadalcanalis n.sp. L. microlepis Potts L. stylolepis Willey Lepidonotus (Thormora) jukesi (Baird) Paradyte crinoidicola (Potts) Paralepidonotus ampulliferus (Grube) P. indicus (Potts) Polyodontes maxillosus (Ranzani) P. melanonotus (Grube) Psammolyce zeylanica Willey Sigalion bandaensis Horst Sthenelais heterochela Horst S. zeylanica Willey Sthenelanella ehlersi (Horst) Sthenolepis japonica (Mclntosh) Thalenessa digitata Mclntosh PALMYRIDAE Bhawania goodei Webster B. pottsiana Horst Paleanotus debilis (Grube) AMPHINOMIDAE Amphinome nigrobranchiata Horst Chloeia conspicua Horst Euphrosine foliosa Aud. & M.-Ed. E. myrtosa Savigny Eurythoe complanata (Pallas) ? Eurythoe sp. Notopygos gregoryi Holly N. sibogae Horst Pareurythoe pitipanaensis De Silva Pseudeurytlwe paucibranchiata Fauvel PHYLLODOCIDAE Eteone japanensis Mclntosh Eulalia albopicta Marenzeller E. viridis (Linnaeus) E. (Pterocirrus) magalhaensis Kinberg Notophyllum splendens (Schmarda) Phyllodoce fristedti Bergstrom P. malmgreni Gravier P. pruvoti Fauvel P. quadraticeps Grube P. (Anaitides) madeirensis Langerhans P. (Anaitides) parva Hartmann-SchrSder P. (Genetyllis) castanea (Marenzeller) P. (Genetyllis) gracilis Kinberg PILARGIDAE Sigambra hanaokai (Kitamori) Synelmis albini (Langerhans) HESIONIDAE Gyptis capensis (Day) G. maraunibinae n.sp. Hesione splendida Savigny Leocrates chinensis Kinberg SYLLIDAE Autolytus sp. Brania clavata (Claparede) Exogone gemmifera Pagenstecher E. uniformis Hartman E. verugera (Claparede) Haplosyllis spongicola (Grube) Langerhansia cornuta (Rathke) L.? rosea (Langerhans) Sphaerosyllis hirsuta Ehlers Syllis longissima Gravier Syllis sp. cf. gracilis Grube Trypanosyllis coeliaca Claparede T. (Trypanedenta) sp. Typosyllis alternata (Moore) T. armillaris (Miiller) T. brachycola (Ehlers) THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 107 T. exilis (Gravier) T. lucida (Chamberlin) T. prolifera (Krohn) Ty posy His sp. SPHAERODORIDAE Sphaerodoridium claparedii (Greeff) NEREIDAE Ceratonereis costae (Grube) C. erythraeensis Fauvel C. mirabilis Kinberg Cryptonereis malaitae n.g.n.sp. Namalycastis indica (Southern) Nereis (Neanthes} caudata (Delle Chiaje) N. (Neanthes) unifasciata Willey N. (Neanthes} cf. kerguelensis Mclntosh Perinereis cultrifera (Grube) P. nigropunctata (Horst) P. nuntia (Savigny) Platynereis insolita Gravier Pseudonereis anomala Gravier P. masalacensis (Grube) P. variegata (Grube) Solomononereis marauensis n.g.n.sp. NEPHTYIDAE Nephtys (Aglaophamus) munamaorii n.sp. N. (Micronephthys} sphaerocirrataWesenberg- Lund N. (Nephtys) sp. cf. palatii Gravier LACYDONIIDAE Paralacydonia weberi Horst GLYCERIDAE Glycera gigantea Quatrefages G. lancadivae Schmarda G. longipinnis Grube G. rouxi Aud. & M.-Ed. EUNICIDAE Arabella tricolor (Montagu) A. mutans (Chamberlin) Dorvillea sp. Drilonereis major Crossland Eunice afra Peters E. antennata (Savigny) E. aphroditois (Pallas) E. coccinea Grube E. grubei Gravier E. marovoi n.sp. E. norvegica (Linnaeus) E. tentaculata Quatrefages E. tubifex Crossland E. (Palola) siciliensis Grube Lumbrineris latreilli Aud. & M.-Ed. L. papillifera (Fauvel) L. sphaerocephala (Schmarda) Lysidice collaris Grube Marphysa macinloshi Crossland Nematonereis unicornis (Grube) Oenone fulgida (Savigny) Onuphis (Nothria) holobranchiata Marenzeller ORBINIIDAE Haploscoloplos bifurcatus Hartman Naineris laevigata (Grube) SPIONIDAE Dispio maroroi n.sp. Laonice cirrata (Sars) Malacoceros indicus (Fauvel) Nerinides sp. cf. gilchristi Day Polydorella novaegeorgiae n.sp. Prionospio cirri/era Wir6n P. ehlersi Fauvel P. malmgreni Claparede P. pinnata Ehlers P. steenstrupi malayensis Caullery P. tetelensis n.sp. Pseudopolydora corallicola Woodwick Pseudopolydora sp. Scolelepis squamata mendanai n.subsp. Spio filicornis (Miiller) MAGELONIDAE Magelona japonica Okuda Magelona sp. TROCHOCHAE TIDAE Poecilochaetus serpens honiarae n.subsp. P. tropicus Okuda CHAE TOP TERIDAE Chaetopterus variopedatus (Renier) Mesochaetopterus Sagittarius (Claparede) Phyllochaetopterus elioti Crossland P. herdmani (Hornell) P. socialis Claparede Spiochaetopterus costarum costarum (Claparede) CIRRATULIDAE Cirriformia filigera (Delle Chiaje) C. punctata (Grube) io8 P. E. GIBBS Dodecaceria fistulicola Ehlers D. laddi Hartman Tharyx sp. COSSURIDAE Cossura coasta Kitamori FLABELLIGERIDAE Diplocirrus glaucus orientalis n.subsp. SCALIBREGMIDAE Hyboscolex longiseta Schmarda Scalibregma inflatum Rathke OPHELIIDAE Armandia lanceolata Willey A. leptocirrus (Grube) A. longicaudata (Caullery) Ophelia koloana n.sp. Polyophthalmus pictus (Dujardin) STERN ASPIDAE Sternaspis scutata (Renier) CAPITELLIDAE Capitellethus dispar (Ehlers) Capitobranchus sp. Dasybranchus caducus (Grube) Mastobranchus dollfusi Fauvel M. trinchesii Eisig Mediomastus sp. cf. capensis Day Notomastus sp. ARENICOLIDAE Abarenicola claparedii claparedii (Levinsen) MALDANIDAE Clymenella (= Macroclymene) sp. i Clymenella (= Macroclymene) sp. 2 Clymenella (= Euclymene) sp. Euclymeninae sp. A. Euclymeninae sp. B. Euclymeninae sp. C. ? Nicomache sp. Praxillella sp. OWENIIDAE Myriochele eurystoma Caullery M. heruensis n.sp. Myriochele sp. Owenia fusiformis Delle Chiaje SABELLARIIDAE Lygdamis ehlersi (Caullery) L. indicus Kinberg PEC TINARHDAE Pectinaria (Pectinaria) antipoda Schmarda AMPHA RE TIDAE Isolda pulchella Miiller ? Sosane wireni Caullery TEREBELLIDAE Amaeana trilobata (Sars) Euthelepus kinsemboensis Augener Eupolymnia nebulosa (Montagu) Loimia medusa (Savigny) Lysilla ubianensis Caullery Pista dibranchis n.sp. P. typha (Grube) Reteterebella queenslandia Hartman Terebella ehrenbergi Grube Terebellides stroemi Sars SABELLIDAE Branchiomma cingulata (Grube) Hypsicomus phaeotaenia (Schmarda) Megalomma intermedium (Beddard) M. linaresi (Rioja) M. quadrioculatum (Willey) M. trioculatum Reish M. vesiculosum (Montagu) Potamilla ehlersi Gravier Sabella fusca Grube 5. melanostigma Schmarda Sabellastarte sanctijosephi (Gravier) SERPULIDAE Filograna implexa Berkeley Hydroides minax (Grube) H. uncinata (Philippi) Mercierella enigmatica Fauvel Serpula hartmanae Reish S. vermicularis Linnaeus Spirobranchus coutierei (Gravier) 5. giganteus (Pallas) Vermiliopsis glandigerus Gravier THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 109 At this stage a zoogeographical analysis of the Solomon Islands fauna can be regarded only as provisional since many areas within the Indo-Pacific still remain to be investigated and further records, as well as taxonomic revisions, will modify the known distribution patterns of many species. The data for this analysis are given in Table 3. The faunistic regions outlined in this table are necessarily broad: in the Pacific region, only those island groups for which the polychaete faunas are fairly well known are considered. As far as possible, synonymies have been taken into account. In compiling the distributional data for each species the following references have been consulted : (i) Eastern Atlantic (ii) Mediterranean Sea (iii) South Africa (iv) East Africa (Red Sea to 32S) (v) Indian waters (Persian Gulf to Andaman Is.) (vi) South-west Australia (vii) Malay Archipelago (Malaya to New Guinea and including Philippine and Palau Is.) (viii) East Australia (south to Port Jackson) (ix) New Caledonia (x) Central Pacific (Society and adjacent Islands) (xi) New Zealand (xii) Marshall Islands (xiii) Hawaii (xiv) Japan Augener, 1918; Fauvel, 1923, 1927; Kirke- gaard, 1959. Fauvel, 1923, 1927. Day, 1967. Crossland, 1903, 1904, 1924; Day, 1962, 1967; Gravier 1900-1908. De Silva, 1961, 1965, 19650; Fauvel, 1953; Tampi & Rangarajan, 1964; Wesenberg- Lund, 1949. Augener, 1913, 1914; Fauvel, 1922; Kott, 1949. Caullery, 1944; Ehlers, 1920; Fauvel, 1935, 1939; Horst, 1910-1924; Mesnil & Fauvel, 1939; Okuda 19370; Pillai, 1965. Augener, 1927; Monro, 1931; Rullier, 1965; Russell, 1962; Straughan, 1967. Fauvel, 1947. Fauvel, 1947; Monro, 1928, 1939, 19390. Augener, 1924, 1926; Ehlers, 1904; Knox, 1951, 19510, 1960. Hartman, 1954; Reish, 1968. Hartman, 1966; Straughan, 1969. Imajima & Hartman, 1964; Imajima, 1966- 1967. Of the total of 178 species recorded from the Solomon Islands, 21 or n-8% are considered to be cosmopolitan in their distribution and can be eliminated from the analysis in order to obtain a clearer pattern of the faunal relationships. As expected, the Solomon Islands fauna has a large overlap with the faunas of the Malay Archipelago (61-1%) and of Indian waters (64-3%), and over one-half (55-4%) of the species are known to extend to the east coast of Africa. Thus the Indo-west- Pacific component forms a high proportion of the Solomon Islands fauna. In the Pacific region, it is interesting that the number of species in common between the P. E. GIBBS tredBf o ro I J3 ,0 i tH *o -- M ro M ON M N 0) 1 M O ^ 9 1 SH fi .23 ro N H? O co 1C o 03 'a ro M ro 7- a I w 4-> B M M M N o o ^g 1 to M M * M M ^ g ^ M O H W> .2 8 c oo fs^ M ^ d c W ro rr; O 1 * f% *H hH H M vO a 0) 42 *-" _0 ^- i i s '+3 o 10 00 J-^, o o M M 00 Io ^ ^ oo J ^ J^ 00 &* o^ Q rt o M ro ^* C/5 -*- 1 y a C "o' ro 00 V> T 6 ^ Oi to H ro w *^-\ d) CL) N o > 42 CO 03 ** _0) f^ j^ O O "H l^- N IT- <0 '{3 > T) ro 5 1) -fJ 1 03 '! 36" 1 CD C a *j O 2 .9 ". 8^2 l'S-3 &S Number of r 8 _c t/) 1) 1 PH C/3 "en" ju 1 to f^ o M Percentage "o CO 'to "rt C ;curring in th < w o THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS in Solomon Islands and other Island groups lying within the tropics decreases with increasing distance: the faunas of both New Caledonia and the Marshall Islands show similar affinities (27-4% and 29-3% respectively) as do the faunas of the islands of the Central Pacific (15-9%) and Hawaii (15-9%). A relatively high proportion of the Solomon Islands species extend to Japan (31-2%) but fewer than expected have been recorded from the east coast of Australia (26-1%) although this percentage should probably be much higher. It is difficult to compare these results with those of previous analyses because of the lack of earlier records from the tropical west Pacific. For example, Knox (1958) had records of only 81 species from this region (Micronesia - Melanesia) for his analysis of the distribution of polychaetes in the Indo-Pacific region and of this total 27% were Indo-Pacific and 31% were cosmopolitan. However the larger number of records from the present survey indicates that the Indo-Pacific element is proportion- ally much greater. Interestingly, previous estimates of the Indo-Pacific element in the faunas of New Zealand and Japan, of 12 % and 30 % respectively (Knox, 1963 ; Imajima & Hartman, 1964), closely correspond to the overlaps calculated above between these two regions and the Solomon Islands, the fauna of the latter being essentially Indo-Pacific. The records from the Solomon Islands have extended the known distribution of thirteen species from the Indian Ocean to the West Pacific region. These species are Lepidasthenia stylolepis, Psammolyce zeylanica, Pareurythoe pitipanaensis, Phyllodoce fristedti, Syllis longissima, Platynereis insolita, Lumbrineris papillifera, Marphysa macintoshi, Prionospio ehlersi, Phyllochaetopterus elioti, P. herdmani, Spiochaetopterus costarum costarum and Megalomma quadrioculatum. A further six species were known only from Atlantic or Mediterranean waters, namely Trypano- syllis coeliaca, Sphaerodoridium claparedii, Mastobranchus dollfusi, M. trinchesii, Abarenicola claparedii, and Megalomma linaresi. As noted above the fauna of the Solomon Islands appears to be essentially Indo- Pacific and apart from the new species and subspecies that were discovered, relatively few of the species remain unrecorded from the Indian Ocean. This Pacific element in the fauna is represented by such species as Notopygos gregoryi, Eteone japanensis, Phyllodoce pruvoti, P. (Anaitides) parva, Sigambra hanaokai, Exogone uniformis, Typosyllis brachycola, T. lucida, Pseudonereis masalacensis, Haploscoloplos bifurcatus, Pseudopolydora corallicola, Poecilochaetus tropicus, Reteterebella queenslandia, Megalomma trioculatum and Serpula hartmanae. However most of these species have few records and probably have yet to be discovered elsewhere. ECOLOGICAL OBSERVATIONS Littoral survey Although it is not practicable to list fully the species taken at each of the littoral stations, the short accounts that follow are presented as an outline of the ecological assemblages of species encountered in several of the more important habitats, in particular, those found on the reef platforms along the more exposed shorelines H2 P. E. GIBBS and those composing the infauna of certain sedimentary deposits present in sheltered coastal areas. The habitats of each species are given in the Systematic Account. The tidal range in the Solomon Islands is small, being about i-om in amplitude at springs, and investigations were generally concentrated betwen mid-tide level and low water mark. The importance of the boring activities of polychaetes was recognized by Gardiner (1903) who regarded them as the "prime and most effective agents" in the destruction of coralline rocks. This view has been supported by Johnson (in Hartman, 1954). Boring is effected chiefly by the abrasive action of either hard pharyngeal structures, such as possessed by the nereids and eunicids, or by modified setae, as in certain spionids and cirratulids (Hartman, 1954). However as pointed out by Utinomi (1953) it is often difficult to distinguish between those species which actually bore into the coral from those which utilize and perhaps enlarge the vacated burrows made by boring species. For example, from its habit the sabellid Hypsicomus phaeotaenia appears to be a boring species but it does not possess hard chitinized structures that could be used for penetration. Whether chemical action is employed by such a species has yet to be investigated. Few polychaetes contribute to reef formation by virtue of their construction of massed tubes and in the Solomon Islands only Spirobranchus giganteus appears to be sufficiently common to be considered a minor contributor to reef growth. On the reef platforms at moderately or very exposed localities, such as at Matiu, Batuona and Gizo, sedentary species are surprisingly few although quite extensive colonies of Phyllochaetopterus socialis are often present in places. On the other hand, errant species are fairly numerous, particularly the nereids and eunicids, which form the bulk of the destructive species, including Perinereis nigropunctata, Pseudonereis anomala, P. masalacensis, P. variegata and perhaps Platynereis insolita, together with Eunice afra, E. antennata, E. coccinea, E, teniaculata, E. (Palola) siciliensis and Lysidice collaris. Other species which may contribute to reef breakdown are Nematonereis unicornis, Arabella mutans, Dodecaceria fistulicola and Hypsicomus phaeotaenia. Many of these boring species are also common amongst the surface cover on the reef, that is, amongst algal growth (e.g. Amphiroa), or Phyllochaetopterus tubes, where they accompany the crevice-dwelling species which utilize such shelter when the reef is exposed at low-tide. The crevice-dwelling species are many and are represented by Lepidonotus (Thormora) jukesi, Paleanotus debilis, Eurythoe complanata, Euphrosine myrtosa, Eulalia (Pterocirrus) magalhaensis, Phyllodoce fristedti, P. pruvoti, P. quadraticeps , Synelmis albini, Exogone gemmifera, Syllis longissima, Trypanosyllis coeliaca, Typosyllis alternata, T. armillaris, T. brachycola, T. prolifera, Cirriformia punctata and Terebella ehrenbergi. Encrusting forms include V ermiliopsis glandigerus and Hydroides minax. An inconspicuous species of this habitat is Bhawania goodei which, although found free-living, most frequently occurs as a commensal in the burrows of the sipunculids Aspidosiphon elegans, Cloeosiphon aspergillum and Phascolosoma albolineatum. In sheltered localities the reef platforms are generally covered by a layer of sediment which is often composed of a wide variety of deposit grades ranging from THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 113 sticky mud to coarse coral debris. At Tetel Island it was possible to investigate an assortment of deposits in a small area and the following lists of species discovered in four different grades of sediment give an indication of the diversity of the polychaete infauna. (i) In muddy silt-sand at about mid-tide level: iphione muricata, Lepidasthenia elegans, L. maculata, Sthenelais zeylanica, Eurythoe complanata, Eteone japanensis, Phyllodoce malmgreni, Langerhansia cornuta, Onuphis (Nothria) holobranchiata, Malacoceros indicus, Poecilochaetus serpens honiarae n. subsp., P. tropicus, Mesochaetopterus Sagittarius, Phyllochaetopterus elioti, P. herdmani, Pista dibranchis n.sp., P. typha and Megalomma vesiculosum. L. elegans and L. maculata were dis- covered cohabiting the tubes of M . Sagittarius and P. herdmani respectively. Living under coral boulders lying on this fine deposit, further species were uncovered, namely, Pseudeurythoe paucibranchiata, Typosyllis alternata, T. brachycola, Perinereis cultrifera, P. nuntia, Glycera lancadivae, Nematonereis unicornis, Arabella iricolor, Spiochaetopterus costarum costarum, Hyboscolex longiseta, Dasybranchus caducus, Lysilla ubianensis and Loimia medusa. (ii) In coarse coral debris, chiefly Acropora fragments, towards low water mark: Eurythoe complanata, Notopygos sibogae, Pseudeurythoe paucibranchiata, Leocrates chinensis, Ceratonereis mirabilis, Eunice aphroditois, E. (Palola) siciliensis, Cirriformia filigera, Armandia lanceolata, Loima medusa, Reteterebella queenslandia, Branchiomma cingulata, Hypsicomus phaeotaenia, Megalomma intermedium, M. linaresi, Sabellastarte sanctijosephi, Spirobranchus giganteus and S. coutierei. (iii) In shell gravel at low water mark: Lepidonotus (Thormora) jukesi, Amphinome nigrobranchiata, Pareurythoe pitipanaensis, Leocrates chinensis, Glycera lancadivae, Eunice (Palola) siciliensis, Onuphis (Nothria) holobranchiata, Mesochaetopterus sasittarius and Dasybranchus caducus. (iv) In coarse coral sand just below low water mark: Eurythoe complanata, Magelona japonica, Poecilochaetus serpens honiarae n. subsp., P. tropicus, Meso- chaetopterus Sagittarius, Spiochaetopterus costarum costarum, Capitobranchus sp. Dasybranchus caducus, Mastobranchus trinchesii, PNicomache sp., Pista dibranchis n. sp. and Megalomma vesiculosum. At Graham Point in Marau Sound (east Guadalcanal) extensive deposits of silty sand mixed with shell gravel are colonised by marine angiosperms (Thalassia and others) and support a rich and varied fauna. Of the polychaetes encountered here the most interesting are three Lepidasthenia species which were found living as commensals. L. microlepis and L. stylolepis were both discovered in the burrows of the sipunculid Siphonosoma vastus while the third species, L. guadalcanalis n.sp., was an inhabitant of the burrows of a large enteropneust (probably Balanoglossus carnosus). The polychaete infauna comprises the following species: Polyodontes maxillosus, Psammolyce zeylanica, Sthenelais zeylanica, Amphinome nigrobranchiata, Eurythoe complanata, Pseudeurythoe paucibranchiata, Glycera gigantea, G. lancadivae, Eunice (Palola} siciliensis, Naineris laevigata, Dispio maroroi n.sp., Scolelepis squamata mendanai n.subsp., Poecilochaetus tropicus, Mesochaetopterus Sagittarius, Dasybranchus caducus, Mastobranchus trinchesii, Clymenella (Macroclymene) sp. and Ii 4 P. E. GIBBS Pista dibranchis n.sp. Many of these species are also found below coral boulders together with further species including iphione muricata, Sigalion bandaensis, Notopygos sibogae, Pareurythoe pitipanaensis, Phyllodoce madeirensis, Notophyllum splendens, Synelmis albini, Gyptis maraunibinae n.sp., Hesione splendida, Ty posy His brachycola, Perinereis nigropunctata, Eunice antennata, E. grubei, Lysidice collaris, Lumbrineris latreilli, Eupolymnia nebulosa, and Euthelepus kinsemboensis. In this habitat, Hololepidella nigropunctata and H. ophiuricola n.sp. are also found but living as commensals on ophiuroids. Dredge Survey of Marovo Lagoon Along the north-east coast of New Georgia Island and around the north and east coasts of Vangunu Island in the New Georgia Group, elevated barrier reefs form the \Tokavai Lagoon Grassi Lagoon FIG. 2. Collection localities and positions of the dredge stations in Marovo Lagoon, New Georgia Group. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 115 seaward edge of a more or less continuous lagoon. This lagoon is about 10 km across at its widest point, and its depth is less than 50 m over most of its area. Marovo Lagoon forms the central part of this lagoon, the northern extension being Tokavai and Grassi Lagoons and the southern part Kolo Lagoon. However, for convenience, these lagoons will be collectively referred to as Marovo Lagoon. The geomorphology of the region has been described by Stoddart (1969). A benthic survey of Marovo Lagoon was carried out in October and November 1965. Qualitative samples of the bottom deposits were taken at 40 stations in depths from 2 to 35 m, using a small naturalist's dredge. Two stations (ML 218 and 283) were worked in the northern part of the lagoon, the rest being situated in the central and eastern parts (fig. 2) . The fauna was extracted from the samples (between 10 and 20 1 of sediment) by sieving through a mesh of i-o or 2-0 mm diameter. The bottom deposits vary from thick terrigenous mud, which occurs close to the main- land, to coarse coralline sands which are found along the inner margins of the outer reefs. The station data are given in Table 4. TABLE 4 Dredge survey of Marovo Lagoon : station data. See fig. 2 for station positions. Station Date Depth Deposit (ML) (1965) (m) 29 22.X. 22 Silty mud 37 23-x. 22 Mud 38 23.X. 9 Silty mud 39 25-x. n Mud 40 25.X. 18 Mud 4i 25-x. 20 Mud 55 26.X. n Silty mud 56 26.X. 9 Silty mud 68 27. x. 2 Mud 69 27. x. 13 Silty mud 72 27. x. 35 Silty sand 96 28.X. 9 Sand 97 28.X. 9 Sand 98 28.X. II Sand 100 28.X. 33 Mud no 28.X. 26 Mud 116 29.X. 15 Silty sand 117 29.X. 5 Sand ix8 29.X. 2 Sand i34 29.X. 16 Foram sand Station Date Depth Deposit (ML) (1965) (m) 155 30.x. 9 Mud 156 30-x. 18 Mud 157 3O.x. 13 Mud 1 88 i.xi 18 Mud 190 i.xi 5 Sand 191 i.xi 2 Silty sand 192 i.xi 18 Coarse sand 194 2.xi n Mud 195 2.X1 n Mud 196 2.xi 2 Silty sand 203 3-xi 4 Coarse sand 204 3-xi 18 Coarse sand 218 8.xi 18 Mud 228 lo.xi 5 Mud 229 10. xi 5 Sand 230 lo.xi 24 Silty sand 283 1 3-xi 2 Coarse sand 294 14. xi 4 Coarse sand 295 14. xi 4 Coarse sand 296 14. xi 2 Coarse sand A total of 65 species were taken during the survey of which 43 were not recorded from the littoral zone. This category includes all the species records of the families Nephtyidae (3 species), Lacydoniidae (i), Cossuridae (i), Flabelligeridae (i), Sternas- pidae (i), Oweniidae (4), Pectinariidae (i), and Ampharetidae (2). In addition the u6 P. E. GIBBS survey provided specimens of four new species, namely, Nephtys (Aglaophamus) munamaorii n.sp., Polydorella novaegeorgiae n.sp., Ophelia koloana n.sp. and Myriochele heruensis n.sp. and also one new subspecies, Diplocirrus glaucus orientalis. Of the species taken, ten have not been recorded from the West Pacific, outside of the Malay Archipelago (Sthenelais heterochela, S. zeylanica, Sthenelanella ehlersi, Chloeia conspicua, Prionospio steenstrupi malayensis, Armandia longicaudata, Myriochele eurystoma, Isoldapulchella, Sosane wireni and Lysilla ubianensis) and the distributions of two species (Lumbrineris papillifera and Prionospio ehlersi} are extended from the coast of East Africa. A further two species, namely, Pseudopolydora corallicola and Megalomma trioculatum, have been described only recently from the Marshall Islands. Haploscoloplos bifurcatus was previously known only from south and south-east Australia. The survey provides some indications of the distribution of the commoner species with respect to the bottom deposits. Arbitrarily defining a "common" species as one that was present at three or more stations, the following appear to be mainly restricted to the finer grades of sediments (mud and fine sands) Sthenelais heterochela, Sthenolepis japonica, Pseudeurythoe paucibranchiata, Sigambra hanaokai, Nephtys (Aglaophamus) munamaorii n.sp., Paralacydonia weberi, Haploscoloplos bifurcatus, Prionospio ehlersi, P. pinnata, P. tetelensis n.sp., Diplocirrus glaucus orientalis n. subsp., Armandia lanceolata, Mastobranchus dollfusi, Isoldapulchella, Loimia medusa, and Terebellides stroemi. The coarser deposits (medium to coarse sands) appear to support sparse polychaete populations and only Owenia fusiformis was taken in any numbers. Species that tolerate a wide range of deposit grades include Glycera gigantea, G. lancadivae, Eunice marovoi n.sp., Prionospio steenstrupi malayensis, Armandia leptocirrus, Pectinaria (Pectinaria) antipoda, and Pista dibranchis n.sp. Apart from these common species, several appear to be locally abundant, to judge from the large numbers present at single stations. For example, Onuphis (Nothria) holobranchiata was abundant in the sample of the thick mud at ML 69. Small species such as Polydorella n'ovaegeorgiae n.sp. and Myriochele heruensis n.sp. were probably much more abundant than the sample figures at ML 39 and ML 134 suggest, no doubt many specimens being lost during sieving. Commensal polychaetes During the routine sampling of a number of habitats, a total of twelve species, mainly polynoids, were discovered living in association, apparently as commensals, with other animals, principally echinoderms and sipunculids. Observations on these associations have been presented in an earlier paper (Gibbs, 1969) but for the sake of completeness the commensal species and their hosts are summarized in Table 5. Although Macnae & Kalk (1962) have described similar associations from the coast of Mosambique, probably many have yet to be discovered throughout the Indo- Pacific region. Undoubtedly the echinoderms which act as hosts for G. clavigera, Hololepidella spp. and P. crinoidicola, are more numerous than the present records indicate. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 117 TABLE 5 Summary of the commensal polychaetes and their hosts in the Solomon Islands. Abbreviations : Po - Polychaeta ; Si - Sipunculoidea ; Ga - Gastropoda ; Oph - Ophiuroidea ; Ho - Holothuroidea; Cr - Crinoidea. Commensal Host(s) Bhawania goodei Aspidosiphon elegans (Si) Cloeosiphon aspergillum (Si) Phascolosoma albolineatum (Si) B. pottsiana Eurythoe complanata (Po) Eunice marovoi n.sp. Cerithium vertagus (Ga) Gastrolepidia clavigera Bohadschia argus (Ho) B. graffei (Ho) Holothuria (Halodeima) atra (Ho) Stichopus chloronotus (Ho) Thelenota ananas (Ho) Hololepidella nigropunctata Ophiarthrum elegans (Oph) Ophiocoma brevipes (Oph) O. insularia forma dentata (Oph) H. ophiuricola n.sp. Macrophiothrix koehleri (Oph) Ophiarthrum pictum (Oph) Lepidasthenia elegans Mesochaetopterus Sagittarius (Po) L. guadalcanalis n.sp. Enteropneust (Balanoglossus carnosus?) L. maculata Phyllochaetopterus herdmani (Po) L. microlepis Paraspidosiphon cumingi (Si) Siphonosoma vastus (Si) L. stylolepis Siphonosoma vastus (Si) Paradyte crinoidicola Himerometra robustipinna (Cr) Recently, Dr R. U. Gooding kindly sent the author three specimens of H. nigropunctata taken from two A canthaster planci L. collected at Kira-Kira, San Cristobal I. (3.xii.6g) and a further specimen taken from Diadema savignyi Michelin collected on the Reef Is., Santa Cruz Is. (8.xii.6g). Brackish water and terrestrial species Investigations of brackish water were mainly confined to a lagoon at Lunga Point, near the mouth of the Lunga River on the north coast of Guadalcanal. At the time of examination (g.ix-n.ix) the salinity of the lagoon was 5'6% , whilst that of the outside seawater was 34'5% . Three polychaete species were discovered in this habitat, namely Namalycastis indica, Pseudopolydora sp. and Mercierella enigmatica. Specimens of N. indica were found burrowing amongst the fibres composing the outer husk of the Nipa palm nut, many of which were lying waterlogged along the water's edge. The two other species were present in large numbers within the interstices of a sponge that was growing around submerged tree roots. The specimens of Pseudopolydora have proved to represent a new species (W. J. Light, personal communication) and those of the cosmopolitan M. enigmatica are also of interest in that they show the characters of Neopomatm and thus support Straughan's (1966) evidence for the belief that Neopomatus is the warm water form of Mercierella. Further details of these two species are given below in the Systematic Account. Wesenberg-Lund (1958) has shown that the majority of freshwater polychaetes n8 P. E. GIBBS are nereids and thus it is not surprising that those species which have been discovered in damp terrestrial habitats also belong to this family, in particular to the subfamily Namanereinae. In view of the fact that terrestrial forms are well documented from the East Indies (see Feuerborn, 1932 ; Lieber, 1931 ; Pflugfelder, 1933) their discovery in the nearby Solomon Islands is to be expected. Two small specimens belonging to the Namanereinae were separately collected by members of the Expedition Land Party (Dr. J. Greenslade and Mr. J. Peake) on Mt. Austen, Guadalcanal and on Kolombangara in the New Georgia Group. Both were taken from moist leaf litter at an altitude of 350 m. Unfortunately the identity of these important specimens is uncertain due to damage and although they closely resemble Namanereis amboinensis (Pflugfelder) they may belong to Cryptonereis malaitae n.gen., n.sp., described below, which may also be a damp terrestrial form. Until further specimens from relatively high altitudes are available the status of these specimens must remain undetermined. Any information concerning their mode of reproduction would be of great interest. Spawning of Eunice (Palola) siciliensis The spawning of the circumtropical species Eunice (Palola} siciliensis is well documented for the Pacific region and accounts of this phenomenon, which usually takes place in October or November, have been given by many authors, notably Burrows (1945, 1955), Gaspers (1961), Gravier (1924), Miller & Pen (1959), Stair (1847) and Woodworth (1907). Although the Samoan name 'palolo' is the most commonly used for this species, it has a variety of names, being known as 'paroro' on Rotuma, 'balolo' in the Fiji Islands, and 'hundu' in the New Hebrides. In the Solomon Islands it has several names ; in the Florida Islands, West Guadalcanal and on Malaita it is called either 'ogu' or 'odu' and at the eastern end of San Cristobal it is known as 'parenga'. Lever (1945) records that it is called 'orku' on Ulawa Island. Collection of the 'rising' appears to be a dying custom in the Solomon Islands since many of the natives interviewed stated that they had not done so for many years and certainly only the older men could relate the details of the event. From their description of the rising, it would appear that the spawning of this species appears to be essentially similar to that described for other areas. The author could not be present at a rising but fortunately a valuable collection of the spawning worms was obtained by Wilson Ifunaoa (a schoolboy attached to the Expedition) from Fanalei Island (also called Falelei or Halelei Island), off the south- east coast of Maramasike Island, Malaita. This collection was made at the time of the rising on 2~3.xi.66 and four species are represented - Phyllodoce (Anaitides) madeirensis, Perinereis cultrifera, Eunice coccinea and Lysidice collaris, in addition to Eunice (Palola) siciliensis. The details of this material, together with the spawning times provided by the collector, are given in Table 6. There can be little doubt that all five species were spawning at the same time because all of the specimens either contain apparently mature gametes or are in the 'spent' condition. In a THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 119 similar collection from the New Hebrides, Gravier (1924) records that Lumbrineris sphaerocephala and Perinereis masalacensis were present. TABLE 6 Details of the material in the sample of the 'palolo' or 'ogu' rising at Fanalei, Malaita, collected on 2-3.xi.66 by Wilson Ifunaoa. Species Phyllodoce (Anaitides) madeirensis Perinereis cultrifera Eunice coccinea Eunice (Palola) siciliensis Lysidice collaris Material 3 specimens 2 heteronereids 2 posterior fragments 4 posterior fragments i specimen Time of spawning (hours) 1830-1900 2OOO-22OO 0000-0600 2OOO-22OO Condition Spent Ripe oocytes 200 (A in diameter Ripe oocytes 360 (i in diameter Ripe oocytes 200 (A in diameter Spent Local name Adio Falisu-ogu Raka-raka Falisu-ogu Also included in the collection of the 'palolo' or 'ogu' is a large specimen of Notopygos gregoryi, a species hitherto recorded only from Midway Island. It is thought that this specimen was feeding on the spawning worms as they emerged from the coral. SYSTEMATIC ACCOUNT The great majority of the records from the littoral zone were made between mid- tide level (MTL) and low water mark (LWM). Sublittoral or shallow-water samples were taken to a maximum depth of 35 m in Marovo Lagoon. For each species the number of specimens taken at each of the localities or stations (see figs i and 2) is given : where more than 20 specimens were found the species is indicated as numerous (num.) Family APHRODITIDAE Subfamily POLYNOINAE Gastrolepidia clavigera Schmarda, 1861 Gastrolepidia clavigera Schmarda, 1861 : 159, pi. 36, fig. 316; Fauvel, 1953 : 51, fig. 22. d-f; Day, 1967 : 51, fig. 1.5. a-f. HABITAT. A commensal of holothurians (see Gibbs, 1969 for notes). izo P. E. GIBBS RECORDS. On Stichopus chloronotus Brandt - Graham Pt. -8; Maraunibina Is. - 12; Kalota Is. - 2; on Holothuria (Halodeima) atra Jaeger - Graham Pt. - u ; Kalota Is. - 5; Auki Hr. - num. ; on Bohadschia argus Jaeger - Maraunibina Is. - 4; Kalota Is. - 15; on Bohadschia graffei Semper - Maraunibina Is. - 2 ; Yandina - i ; on Thelenota ananas (Jaeger) - Maraunibina Is. - I. DISTRIBUTION. Tropical Indo-west-Pacific. Harmothoe nigricans Horst, 1915 Harmothoe nigricans Horst, 1915 : 14; 1917 : 90, pi. 20, figs 3-4. HABITAT. Under coral boulders and in beachrock. RECORDS. Tetel Is. - i ; Komimbo Bay - 4; Lauvie Is. - i. DISTRIBUTION. East Indies. Harmothoe sp. HABITAT. Crevice in reef platform. RECORD. Maramasike Pg. - i. NOTES. The specimen has the typical harmothoid prostomium with pronounced lateral peaks and ventrally inserted lateral tentacles. The elytra number fifteen pairs and each carries large conspicuous tubercles. The latter are pear-shaped with wide bases, the largest of them being situated along the posterior margins of the elytra. Notosetae are numerous and coarsely serrated and neurosetae bidentate with a fine secondary tooth almost as long as the main one. The specimen resembles H, impar (Johnston), known from Japan (Imajima and Hartman, 1964) but differs in that the elytral margins are strongly ciliated. Hololepidella nigropunctata (Horst, 1915) Polynoe nigro-punctata Horst, 1915 : 20; 1917 : 104, pi. 21, figs 15-17. Hololepidella nigropunctata; Day, 1957 : 65, fig. i. a-f; Devaney, 1967 : 287, figs 1-5; Pettibone, igdga : 50, fig. 2. a-g. Polyeunoa nigropunctata: Day, 1967 : 54, fig. 1.5. r-u. Hololepidella minuta: Gibbs, 1969 : 449, fig. 131. HABITAT. A commensal of ophiuroids living under coral boulders and in crevices on the reef platform (see Gibbs, 1969). RECORDS. Graham Pt. - on Ophiocoma brevipes Peters - 8 ; on Ophiocoma insularia forma dentata Liitken - i ; on Ophiarthrum elegans Peters - 7. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 121 NOTES. In the preliminary report on the commensal species (Gibbs, 1969) these specimens were referred to Hololepidella minuta (Potts, 1910) because they correspond, particularly in terms of their setae, with the type specimen of Polynoe minuta in the British Museum (Natural History). The latter specimen is incomplete however, having only 24 segments, and thus cannot be referred to the genus Hololepidella Willey with certainty because the generically characteristic, segmental arrangement of the elytra (Devaney, 1967; Pettibone, 1969^) cannot be checked. Unfortunately the type specimens of Polynoe minuta var. oculata Potts (1915) must be considered lost since they are not present in the British Museum nor in the Zoological Museum of the University of Cambridge (C. B. Goodhart, pers. comm.). Thus it seems advisable to refer the Solomon Islands specimens to H. nigropunctata (Horst) and to regard P. minuta as indeterminable. Possibly further specimens from crinoids at the type localities of P. minuta (South Male) and P. minuta oculata (Torres Straits) may clarify the problem. DISTRIBUTION. Tropical Indo-west-Pacific to Hawaii. Hololepidella ophiuricola n. sp. (Fig. 3. A-H) Hololepidella commensalis: Gibbs, 1969 : 451, fig. 132. DESCRIPTION. The largest specimen (holotype) measures 15 mm in length, is 2-5 mm wide and has 53 segments bearing 25 pairs of elytra. Smaller specimens have 41 to 50 segments bearing 19 to 24 pairs of elytra. The prostomium has marked antero-lateral peaks and two pairs of eyes (fig. 3. A). The median antenna and tentacular cirri are long and the lateral antennae are short and ventral in origin. The palps are stout and between 1-5 to 2-0 times the length of the prostomium. Both dorsal and ventral cirri are relatively long, the former being about equal to the width of the body, the latter about equal to the length of the neuropodial lobe. The elytra are oval in shape and completely cover the body. They have smooth margins and are transparent except for small, irregular patches of black pigment contained in polygonal-shaped cells (fig. 3. B, c). As is characteristic of the genus, the elytra are carried on segments 2, 4, 5, 7, 9, . . . 21, 23, 26, 29, 31, 34, 36 and on alternate segments to the posterior end. The number of elytra depends on the segment number and in four of the five specimens there are 24 or 25 pairs on 49 to 53 segments. The notopodial lobe is rather small (fig. 3. D) and carries 16 to 20 notosetae, each of which is minutely serrated along one edge (fig. 3. E). The neuropodium is bilobed with a triangular pre-setal lip and a rounded post-setal lip. There are 3 or 4 supra- acicular and 6 to 8 sub-acicular neurosetae. Superior neurosetae have about 15 rows of spinules and a smooth, curved tip (fig. 3. F) : inferior neurosetae are shorter and more slender with minute serrations (fig. 3. G, H). 122 P. E. GIBBS All specimens have a darkly pigmented dorsal surface the pattern of which may vary according to the species of the host ophiuroid (see Gibbs, 1969). The cirri and antennae are dark, as are the palps which also show a white longitudinal line on their dorsal surface. Apart from a dark circular spot at the base of each parapodium, the ventral surface is unpigmented. H. ophiuricola may be distinguished from the type species H. commensalis Willey and from H. nigropunctata by its notosetae, the ornamentation of which differs in all three species. Also H. ophiuricola differs from the former species in having a greater number of notosetae (16 to 20 compared to 8) and from H. nigropunctata in having unidentate, not bidentate neurosetae. It should be noted that in a recent review of the genus Hololepidella Pettibone (19690) considers the records of H. commensalis given by Augener (1922) and Fauvel (1932) from the Indian Ocean are doubtful in view of the fact that both sets of specimens differ from the type description in having bidentate neurosetae. 0.5mm FIG. 3. Hololepidella ophiuricola n.sp. (A) Dorsal view of anterior region showing pigmentation. (B) Elytron from middle body, (c) Patch of pigment cells on elytron. (D) Elytrigerous parapodium from middle body. (E) Notoseta. (F-H) Superior and inferior neurosetae. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 123 HABITAT. A commensal of ophiuroids living under coral boulders and in crevices on the reef platform. RECORDS. Graham Pt. - on Macrophiothrix koehleri Clark - 4 (including holo- type) ; Kalota Is. - on Ophiarthrum pictum Miiller and Troschel - i. British Museum (Natural History) Registration No. Holotype 1970-20 Paratypes 1970-21-24 Iphione muricata (Savigny, 1818) Iphione muricata: Fauvel, 1953 : 3 2 > fig- X 3- a ~ e ; Day, 1967 : 43, fig. 1.3. a-f. HABITAT. Under coral boulders in muddy silt and sand. RECORDS. Tetel Is. - 3; Komimbo Bay - 3; Maraunibina Is. - 2; Graham Pt. - 24. DISTRIBUTION. Tropical Indo-west-Pacific. Lepidasthenia elegans (Grube, 1840) Lepidasthenia elegans : Potts, 1910 : 342, pi. 19, fig. 16, pi. 20, fig. 32; Fauvel, 1923 : 88, fig. 33. a-g; Day, 1967 : 90, fig. 1.16. i-m. HABITAT. In silt and cohabiting a tube of Mesochaetopterus Sagittarius at LWM. RECORDS. Tetel Is. - 2. DISTRIBUTION. Mediterranean; Indo-west-Pacific. Lepidasthenia guadalcanalis n. sp. (Fig. 4. A-F) Lepidasthenia mossambica: Gibbs, 1969 : 453, fig. 134. DESCRIPTION. The holotype is the largest of the six specimens and measures 85 mm for about 125 segments. Preserved in alcohol the colour is pale brown with darker bars across the anterior segments. The fourth pair of elytra is coloured reddish- brown (fig. 4. A) but the other elytra are colourless. The prostomium is roughly hexagonal in shape and has two pairs of eyes situated on the antero-lateral and posterior margins (fig. 4. B). The median and lateral antennae are terminal in origin and are about one half the length of the stout palps. The tentacular cirri are slightly longer than the antennae. The posterior margin of the prostomium is hidden by a conspicuous occipital flap which is heavily papil- I2 4 P. E. GIBBS lated. Similar papillae are to be found along the anterior and posterior edges of the anterior segments on their dorsal side and a few are present on the dorsal and ventral surfaces of the neuropodial lobes. The elytra, which are arranged segmentally in the typical polynoid sequence, are thin, circular in shape and do not cover the mid-dorsal region of the body. They have smooth margins and lack papillae. Only the fourth pair, on segment 7, is pigmented and the others are almost transparent. The dorsal cirri are about equal in length to the neuropodial lobes. The noto- podial lobes are small and supported by an aciculum but the neuropodial lobes are well-developed with rounded, subequal, pre-setal and post-setal lips and short ventral cirri (fig. 4. c). Notosetae appear to be entirely lacking. In the anterior segments the neurosetae are slender with a small subterminal tooth (fig. 4. D, E) and number about 30 per neuropodium. However in the middle body segments, the neurosetae are much stouter, fewer in number (14 or 15 per neuropodium) and lack subterminal teeth (fig. 4. F). The number of rows of spinules possessed by these setae is similar 0.5mm FIG. 4. Lepidasthenia guadalcanalis n.sp. (A) Dorsal view of anterior region showing pigmentation of fourth pair of elytra. (B) Head region, (c) Parapodium from middle body. (D-E) Superior neuroseta from anterior segment. (F) Superior neuroseta from middle body segment. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 125 throughout the body, the superior ones having about 7, the inferior ones 4 or 5. Neither slender superior neurosetae in the anterior segments nor giant neurosetae in the posterior region could be found. In possessing a distinctly papillated occipital flap, L. guadalcanalis resembles three other species, namely, L. michaelseni Augener, L. terrareginae Monro and L. mossambica Day. It differs from the former two species in lacking slender superior neurosetae and in having unidentate neurosetae in the middle segments. L. guadalcanalis is close to L. mossambica, to which these specimens were provisionally assigned (Gibbs, 1969), but a comparison of the type specimen of L. mossambica (in the British Museum, Natural History) has revealed important differences in the structure of the setae. In the middle segments of L. guadalcanalis the neurosetae are much stouter, fewer in number and have fewer rows of spinules (7 compared to 10 or 12) than in L. mossambica and the presence of small subterminal teeth on the neurosetae of the anterior segments of L. guadalcanalis also separates the two species. Furthermore the distinctive coloration of the fourth pair of elytra appears to be a characteristic feature of L. guadalcanalis. HABITAT. A commensal of a large enteropneust (Balanoglossus carnosus?} living in silty sand (Thalassia flat). RECORDS. Graham Pt. - 4; Fintry Pt. - 2 (including holotype). British Museum (Natural History) Registration No. Holotype 1970-25 Paratypes 1970-26-28 Lepidasthenia maculata Potts, 1910 Lepidasthenia maculata Potts, 1910 : 344, pi. 20, fig. 33, pi. 21, fig. 51; Fauvel, 1953 : 58, fig. 27. h-k; Day, 1967 : 92, fig. 1.16. s-v. HABITAT. In coarse sand, silt and within a tube of Phyllochaetopterus herdmani. RECORDS. Haroro - i ; Tetel Is. - 2. DISTRIBUTION. North Atlantic; Indian Ocean; Indo-China. Lepidasthenia microlepis Potts, 1910 Lepidasthenia microlepis Potts, 1910 : 343, pi. 19, fig. 17, pi. 21, fig. 52; Fauvel, 1953 : 57, fig. 26. e-f; Day, 1967 : 90, 1.16. e-h. HABITAT. A commensal of sipunculids. Hosts include Siphonosoma vastus (Selenka & Biilow) living in silty sand (Thalassia flat) and Paraspidosiphon cumingi (Baird) boring in a Porites boulder. RECORDS. Graham Pt. - 4. DISTRIBUTION. Tropical Indo-west-Pacific. 126 P. E. GIBBS Lepidasthenia stylolepis Willey, 1907 Lepidasthenia stylolepis Willey, in Lloyd, 1907 : 260, figs 1-4; Gibbs, 1969 : 453, fig. 134. HABITAT. A commensal of the sipunculid Siphonosoma vastus, living in silty sand (3 out of 7 specimens were discovered in association; hosts were not found for the other 4 specimens). RECORDS. Graham Pt. - 7. NOTES. The similarity of Perolepis regularis Ehlers and Lepidasthenia sibogae Horst to L. stylolepis has been referred to in an earlier paper (Gibbs, 1969). DISTRIBUTION. Persian Gulf; PEast Africa; PEast Indies. Lepidonotus (Thormora) jukesi (Baird, 1865) Lepidonotus (Thormora) jukesi: Fauvel, 1953 : 37, fig. 13. o-r; Day, 1967 : 80, fig. 1.13. g-m. HABITAT. Under coral boulders, in crevices within reef platform, amongst Phyllochaetopterus socialis tubes and algal cover (Amphiroa) from MTL to LWM. RECORDS. Tetel Is. - i ; Matiu Is. - 13 ; Batuona Is. - 17 ; New Manra - 5 ; Komimbo Bay - i ; Mamara Pt. - I ; Lingatu - 2 ; Maramasike Pg. - 3. DISTRIBUTION. Indo-west-Pacific. Paradyte crinoidicola (Potts, 1910) Polynoe crinoidicola Potts, 1910 : 337, pi. 18, fig. 10, pi. 20, fig. 30, pi. 21, figs 39-41. Scalisetosus longicirrus : Fauvel, 1953 : 50, fig. 22. a-c; Day, 1967 : 58, fig. 1.7. a-f. Paradyte crinoidicola: Pettibone, 1969 : 13, fig. 7. a-g. HABITAT. A commensal of crinoids; on Himerometra robustipinna (P. H. Carpenter). RECORDS. Maraunibina Is. - 5 specimens from two hosts. NOTES. Following Fauvel (1953) and Day (1967) P. crinoidicola was previously referred (Gibbs, 1969) to S. longicirrus (Schmarda) which Pettibone (1969) considers indeterminable. DISTRIBUTION. Indo-west-Pacific. Paralepidonotus ampulliferus (Grube, 1878) Polynoe ampullifera Grube, 1878 : 35, pi. 3, fig. 5. Harmothoe ampullifera: Fauvel, 1953 : 43, fig. i8.d; Pillai, 1965 : 117, fig. 3. d-g, fig. 4. a-b. Paralepidonotus ampulliferus: Horst, 1917 : 76; Day, 1967 : 47, fig. 1.4. a-f. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 127 HABITAT. Undersurface of coral boulder on reef platform. RECORD. Kalota Is. - i. DISTRIBUTION. Tropical Indo-west-Pacific. Paralepidonotus indicus (Potts, 1910) Lagisca indica Potts, 1910 : 338, pi. 19, fig. 13, pi. 21, figs 46-47. Paralepidonotus indicus: Day, 1967 : 48, fig. 1.4. g-k. HABITAT. Silty sand with coral debris at LWM. RECORD. Komimbo Bay- i. DISTRIBUTION. Mogambique; Maldive Is. Subfamily POLYODONTIDAE Polyodontes maxillosus (Ranzani, 1817) Polyodontes maxillosus: Fauvel, 1923 : 97, fig. 37. a-n; 1953 : 71, fig. 32. a-n. HABITAT. Silty sand with shell and coral fragments at LWM; coarse sand at 1 8 m depth. RECORDS. Graham Pt. - i ; Fintry Pt. - i ; ML 204 - i. NOTES. Fauvel records that this species may grow to i m in length. The largest of the three specimens from the Solomon Islands measures only 12 cm: its felt-like tube had a diameter i-o to 1-5 cm and extended to a depth of about 30 cm into the deposit at Graham Pt. DISTRIBUTION. North Atlantic ; Mediterranean ; Indian Ocean ; Indo-China. Polyodontes melanonotus (Grube, 1876) Polyodontes melanonotus: Fauvel, 1953 : 72, fig. 33. c-g; Day, 1967 : 96, fig. 1.17. g-n. HABITAT. Mud at n m; coarse sand at 18 m. RECORDS. ML 194 - i ; ML 204 - i. NOTES. Specimen from ML 194 is 3-5 cm long: it was removed from a tube about 15 cm in length, i-o cm in diameter, composed of consolidated mud. DISTRIBUTION. West Africa; Indo-west-Pacific. 128 P. E. GIBBS Subfamily SIGALIONINAE Psammolyce zeylanica Willey, 1905 Psammolyce zeylanica Willey, 1905 : 255, pis 1-2, figs 33-43; Fauvel, 1953 : 68, fig 31.!. HABITAT. Silty sand (Thalassia flat). RECORDS. Graham Pt. - 2. DISTRIBUTION. Ceylon. Sigalion bandaensis Horst, 1917 Sigalion bandaensis Horst, 1917 : no, pi. 22, figs 4-5. HABITAT. Under boulder on silty sand with coral debris at LWM. RECORD. Graham Pt. - i. DISTRIBUTION. East Indies; East Australia. Sthenelais heterochela Horst, 1917 Sthenelais heterochela Horst, 1917 : 113, pi. 23, figs 3-6. HABITAT. Mud and silty sand, 2-11 m depth. RECORDS. ML 191 - i ; ML 194 - i ; ML 195 - i. DISTRIBUTION. East Indies. Sthenelais zeylanica Willey, 1905 Sthenelais zeylanica Willey, 1905 : 258, pi. 2, fig. 48; Fauvel, 1953 : 62, fig. 29. a. HABITAT. Silty sand, MTL to LWM ; sand, 5-16 m depth. RECORDS. Tetel Is. -i; Komimbo Bay -4; Graham Pt. -2; Fintry Pt. -3; ML 134 - 2 ; ML 190 - i. NOTE. In addition to the two slender stylodes arising from the base of the ventral cirrus, these specimens have a third appendage with a bulb-shaped ending. DISTRIBUTION. India; Palau Islands. Sthenelanella ehlersi (Horst, 1916) Euleanira ehlersi Horst, 1916 : 12; 1917 : 122, pi. 27, figs 1-5; Day, 1967 : 101. Sthenelanella ehlersi: Pettibone, 19696 : 434, figs 4-5. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 129 HABITAT. Mud and silty sand, 18-24 m depth. RECORDS. ML 188 - 3; ML 230- i. DISTRIBUTION. Natal; East Indies. Sthenolepis japonica (Mclntosh, 1885) Leanira japonica Mclntosh, 1885 : 154, pi. 22, fig. 3, pi. I4A, figs 1-2; Fauvel, 1953 : 69, fig. 33-a-b. Sthenolepis japonica: Imajima & Hartman, 1964 : 43; Day, 1967 : 112. HABITAT. A characteristic species of fine deposits in the sublittoral zone, thick mud to silty sand, 2-33 m depth. RECORDS. ML 56 - 2 ; ML 69 - i ; ML 100 - 5 ; ML 155 - 2 ; ML 156 - 2 ; ML 157 - i; ML 188-2; ML 190 -2; ML 191-1; ML 195 -3; ML 196 -3; ML 218 -4; ML 228 - i. DISTRIBUTION. Indo-west-Pacific to Japan. Thalenessa digitata Mclntosh, 1885 Thalenessa digitata Mclntosh, 1885 : 140, pi. 22, fig. 2, pi. 23, figs 5-7, pi. 25, figs 4-5, pi. I3A, figs 7-10; Willey, 1905 : 260, pi. 2, figs 50-52; Imajima & Hartman, 1964 : 46. HABITAT. Coarse sand, 2-4 m depth. RECORDS. ML 203 - 2 ; ML 296 - i. DISTRIBUTION. Ceylon ; Admiralty Is. ; Japan. Family PALMYRIDAE Bhawania goodei Webster, 1884 Bhawania cryptocephala Gravier, 1901 : 263, pi. 10, figs 152-156, text-figs 280-285; Fauvel, 1953 : 79, ng. 36. e-i. Bhawania goodei: Day, 1953 : 407 (synonymy); 1967 : 118, fig. 2.1. a-f. HABITAT. Cohabiting burrows of coral-boring sipunculids; hosts include Aspido- siphon elegans (Chamisso & Eysenhardt), Cloeosiphon aspergillum (Quatrefages) and Phascolosoma albolineatum (Baird). Also found free-living in crevices and amongst tubes of Phyllochaetopterus socialis. RECORDS. Matiu Is. - 30; New Manra - 5 ; Mamara Pt. - i ; Maramasike Pg. - 2. DISTRIBUTION. Circumtropical. 130 P. E. GIBBS Bhawania pottsiana Horst, 1917 Bhawania cryptocephala: Potts, 1910 : 328. Bhawania cryptocephala var. pottsiana Horst, 1917 : 137. Bhawania sp.: Gibbs, 1969 : 454. HABITAT. Sedimented crevices in Porites boulders; commensal (?) with Eurythoe complanata (see Gibbs, 1969). RECORDS. Graham Pt. - 2. NOTES. The larger of the two specimens measures 45 mm in length. Both possess very slender setae with hair-like appendices in the inferior part of the neuropodium, which are not present in B. goodei. This additional type of seta was first noticed by Potts (1910) in a specimen from Zanzibar which he attributed to B. cryptocephala. However Horst (1917), in recording a similar specimen from the Celebes Is., gave this form varietal status, naming it B. cryptocephala var. pottsiana. Day (1953) has shown B. cryptocephala to be a synonym of B. goodei, but since the variety pottsiana is quite distinct from its stem species, its subspecific status is here raised to specific rank. DISTRIBUTION. Zanzibar; East Indies. Paleanotus debilis (Grube, 1855) Paleanotus debilis: Day, 1962 : 635 (synonymy); 1967 : 117, fig. 2.1. g-k. HABITAT. Amongst Phyllochaetoptems socialis tubes at LWM; on Halichondria sp. at 5 m depth. RECORDS. Matiu Is. - i ; Batuona Is. - i ; Yandina - 2. DISTRIBUTION. North Atlantic; Mediterranean; Indo-Pacific. Family AMPHINOMIDAE Amphinome nigrobranchiata Horst, 1912 Amphinome nigrobranchiata Horst, 1912 : 39, pi. 10, figs 17-20. HABITAT. Under coral boulders; in shell gravel deposits. RECORDS. Tetel Is. - 2 ; Graham Pt. - 2 ; Maraunibina Is. - i. DISTRIBUTION. East Indies. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 131 Chloeia conspicua Horst, 1910 Chloeia conspicua Horst, 1910 : 173; 1912 : 20, pi. 7, fig. 5, pi. 8, figs 4-5. HABITAT. Silty sand at 2 m depth. RECORD. ML 196 - i. DISTRIBUTION. East Indies. Euphrosine foliosa Audouin & Milne-Edwards, 1833 Euphros ine foliosa : Fauvel, 1923 : 136, fig. 49. a-g; 1953 : 102, fig. 48. a-h. HABITAT. Under coral boulder at LWM. RECORD. Maraunibina Is. - i. DISTRIBUTION. Atlantic Ocean; Mediterranean; Indo-west-Pacific. Euphrosine myrtosa Savigny, 1818 Euphrosine myrtosa : Fauvel, 1923 : 139, fig. 49. k-n; 1953 : 101, fig. 48. k-n; Day, 1967 : 127, fig. 3.1.2. HABITAT. Amongst Phyllochaetopterus socialis tubes; sedimented crevice in Porites boulder. RECORDS. Batuona Is. - i ; Graham Pt. - i. DISTRIBUTION. West Africa; Mediterranean; Indo-west-Pacific. Eurythoe complanata (Pallas, 1766) Eurythoe complanata : Fauvel, 1953 : 83, fig. 38. b-m; Day, 1967 : 128, fig. 3.2. a-h. HABITAT. A wide variety of situations, including under coral boulders, in crevices in reef platform and in beachrock, in Acropora rubble and amongst Phyllochaetopterus socialis tubes and Amphiroa. RECORDS. Tetel Is. -10; Komimbo Bay -20; Matiu Is. -num. ; Batuona Is. - num. ; New Manra - i ; Graham Pt. - 6; Maraunibina Is. - 5 ; Lauvie Is. - i. DISTRIBUTION. Circumtropical. ? Eurythoe sp. HABITAT. Under coral boulders in silty sand. RECORDS. Maraunibina Is. - 4. NOTES. The specimens measure between 10 and 20 mm long and about 2 mm wide and have 57 to 67 segments. A sinuous caruncle extends through setiger 2 132 P. E. GIBBS and the branchiae commence between setigers 9 and 13, extending to the posterior end. Notosetae are of three types, namely (i) stout spines, (ii) harpoon setae and (iii) long, fine, smooth capillaries. Neurosetae are of two types - (i) furcate, with a short secondary spur and (ii) long, fine capillaries with faintly serrated blades, some with a stout spur. The generic identity of these specimens is in question since in the genus Eurythoe the branchiae commence on setigers 1-3 (Day, 1967). It is possible that these relatively small specimens are juveniles and because of this, the erection of a new genus must be postponed until further material is available. Notopygos gregoryi Holly, 1939 Notopygos gregoryi Holly, 1939 : 265, fig. i. a-f. HABITAT. Not known. RECORD. Fanalei - 1. NOTES. The specimen of this elegant species was collected during the 'palolo' rising at Fanalei between 2000 and 2200 hours on 2.xi.66. It is 160 mm long and 25 mm across the body. All details correspond to the description of the holotype. DISTRIBUTION. Midway Is. (one specimen). Notopygos sibogae Horst, 1911 Notopygos sibogae Horst, 1911 : 245; 1912 : 27, pi. 9, figs 4-5. HABITAT. In Acropora rubble ; within sedimented crevices on the undersurfaces of Porites boulders. RECORDS. Tetel Is. - i ;, Graham Pt. - 3. NOTES. Hartman (1966) comments that the differences in the specific characters in Notopygos i.e. number of segments and the position of the anal pore, may reflect differences in the growth stages. However in all four specimens in the collection of N. sibogae the anal pore is situated on the anterior margin of setiger 23 although the lengths vary from 10 to 20 mm. DISTRIBUTION. East Indies. Pareurythoe pitipanaensis De Silva, 1965 Pareurythoe pitipanaensis De Silva, 1965 : 540, fig. 3. a-k. HABITAT. Under coral boulders, in shell gravel and within the interstices of the coral Galaxea. RECORDS. Tetel Is. - i ; Graham Pt. - 5 ; Maraunibina Is. - 3. DISTRIBUTION. Ceylon. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 133 Pseudeurythoe paucibranchiata Fauvel, 1932 Pseudeurythoe paucibranchiata Fauvel, 1932 : 47, pi. i, figs 3-4, text-fig. 8. a-e; 1953 : 86, fig. 39. a-b, fig. 40. a-e. HABITAT. In silty deposits, particularly under coral boulders; in Acropora rubble ; in muds and fine sands, 2-26 m depth. RECORDS. Tetel Is. - 3 ; Komimbo Bay - 12 ; Graham Pt. - 7 ; Maraunibina Is. - 4; ML 37-2; ML 41 - i; ML 68- i; ML 96-1; ML no- 15; ML 134- i; ML 156- 3 ; ML 157 - 6 ; ML 194 - i ; ML 195 - i ; ML 218 - i ; ML 228 - 4. NOTES. Most of the specimens show a button-like caruncle set into the first setiger but some are so contracted that this feature is not visible. Small specimens about 5 mm in length have 4 or 5 pairs of branchiae, whilst in medium-sized specimens up to 10 mm long, the branchiae continue to setiger 16 or 17. The largest specimens come from the littoral zone (Marau Sound) ; these measure 35 mm long and have branchiae up to setiger 27, as typical for P. paucibranchiata. There is some doubt as to whether all of the specimens in this series should be referred to P. paucibranchiata since the position of the prostomium in relation to the first segments and the presence of a caruncle, two major specific characters, are difficult to determine in strongly contracted specimens. Further, the number of branchiae varies greatly with size and cannot be regarded as specific, particularly in small specimens. The setae also are not diagnostic, according to Wesenberg-Lund (1949). On account of these considerations, it seems probable that a number of Pseudeurythoe species are synonyms of P. oculifera (Augener) , the description of which was based on a small, probably juvenile, specimen. DISTRIBUTION. Indian Ocean ; Indo-China. Family PHYLLODOGIDAE Eteone japanensis Mclntosh, 1901 Eteone japanensis Mclntosh, 1901 : 222, pi. i, fig. 2; Imajima & Hartman, 1964 : 60., HABITAT. Silty sand. RECORD. Tetel Is. - i. NOTES. The specimen agrees with those details given in the type description and, in addition, possesses a smooth proboscis. However, since the characters of the proboscis in this species are unknown the identification must be regarded as a provisional one. DISTRIBUTION. Japan Sea. 134 p - E - GIBBS Eulalia albopicta Marenzeller, 1879 Eulalia albopicta Marenzeller, 1879 : 128, pi. 3, fig. 3; Fauvel, 1953 : 123, fig. 60. a-b. HABITAT. Cohabiting a Phyllochaetopterus elioti tube from silty sand. RECORD. Fintry Pt. - i. DISTRIBUTION. Indian Ocean; Indo-China; Japan. Eulalia viridis (Linnaeus, 1767) Eulalia viridis : Fauvel, 1923 : 160, fig. 57. a-h; 1953 : 122, fig. 6.1. a-h; Imajima & Hartman, 1964 : 63. HABITAT. Crevice in reef platform. RECORD. Maramasike Pg. - i. DISTRIBUTION. Cosmopolitan. Eulalia (Pterocirrus) magalhaensis Kinberg, 1866 Eulalia (Pterocirrus) magalhaensis : Kinberg 1858-1910 : 55, pi. 33, fig. i; Fauvel, 1953 : 124, fig. 62. a-h. HABITAT. Amongst Phyllochaetopterus socialis tubes and algal growth (Amphiroa) towards LWM. RECORDS. Cape Esperance - i ; Matiu Is. - 2; Batuona Is. - i ; New Manra - i. NOTE. All five specimens are small-sized (3 to 7 mm) but conform to the species description. DISTRIBUTION. Indo-Pacific. Notophyllum splendens (Schmarda, 1861) Macrophyllum splendens Schmarda 1861 : 82, pi. 29, fig. 227. Notophyllum splendens: Fauvel, 1953 : 126, fig. 60. c; Day, 1967 : 151, fig. 5.3. k-n. HABITAT. Under coral boulder; interstices of the coral Galaxea. RECORDS. Graham Pt. - 2. DISTRIBUTION. Indo-west-Pacific. Phyllodoce fristedti Bergstrom, 1914 Phyllodoce fristedti : Fauvel, 1953 : 118, fig. 58. a-b; Day, 1967 : 147, fig. 5.2. k-m. HABITAT. Crevices in reef platform and beachrock. RECORDS. Matiu Is. - i ; Lauvie Is. - i. DISTRIBUTION. Indian Ocean. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 135 Phyllodoce malmgreni Gravier, 1900 Phyllodoce malmgreni Gravier, 1900 : 207, pi. 10, figs 2931, text-figs 66-69; Fauvel, 1953 : JI 7 fig. 56. h; Day, 1967 : 147, fig. 5.2. n-p. HABITAT. Silty sand at MTL; mud at 2 m depth. RECORDS. Tetel Is. - 2 ; ML 68 - i. DISTRIBUTION. Indian Ocean; East Australia. Phyllodoce pruvoti Fauvel, 1930 Phyllodoce pruvoti Fauvel 1930 : 512, fig. i. a-f, fig. 2. a-c; 1947 : 28, fig. 23. HABITAT. Crevices in reef platform ; amongst Phyllochaetopterus socialis tubes. RECORDS. Matiu Is. - i ; Batuona Is. - i ; New Manra - i. DISTRIBUTION. Tropical West Pacific. Phyllodoce quadraticeps Grube, 1878 Phyllodoce quadraticeps Grube, 1878 : 98, pi. 6, fig. 2; Fauvel, 1953 : 116, fig. 56. f-j; Day, 1967 : 145, fig. 5.2. h-j. HABITAT. Crevices in reef platform and in beachrock, MTL to LWM. RECORDS. Kokomtambu Is. - i ; Matiu Is. - 10; Lauvie Is. - i. NOTE. This species is often found crawling over the surface of exposed coral during the low-tide period. DISTRIBUTION. Tropical Indo-west-Pacific. Phyllodoce (Anaitides) madeirensis Langerhans, 1880 Phyllodoce (Anaitides) madeirensis: Fauvel, 1953 : 120, fig. 59. d-h; Day, 1967 : 145, fig. 5.2. d-g. HABITAT. In Acropora rubble, under coral boulders and in beachrock crevices. RECORDS. Komimbo Bay - 2 ; Lauvie Is. - 2 ; Graham Pt. - 2 ; Fanalei - 3. NOTES. The Fanalei specimens were collected between 1830 and 1900 hours during the 'palolo' rising on 2.xi.66 and are 'spent'. Local name is 'adio'. DISTRIBUTION. Cosmopolitan. 136 P. E. GIBBS Phyllodoce (Anaitides) parva (Hartmann - Schroder, 1965) Anaitides parva Hartmann - Schroder, 1965 : 88, figs 7-9; Hartman, 1966 : 183. HABITAT. Medium sand at 5 m. RECORD. ML 190-1. DISTRIBUTION. Hawaii. Phyllodoce (Genetyllis) castanea (Marenzeller, 1879) Carobia castanea Marenzeller, 1879 : 127, pi. 3, fig. 2; Izuka, 1912 : 199, pi. 21, fig. 3. Phyllodoce (Genetyllis) castanea: Fauvel, 1953 : 115, fig. 56. a-c; Day, 1967 : 149, fig. 53. d-f. HABITAT. Sand at n m. RECORD. ML 98-1. DISTRIBUTION. Indo-west-Pacific. Phyllodoce (Genetyllis) gracilis Kinberg, 1866 Phyllodoce gracilis : Kinberg, 1858-1910 : 55, pi. 22, fig. 3; Monro, 1939 : 173, fig. 3. a-c; Fauvel, 1953 : 117. fi g- 57- a-g. HABITAT. Crevice in reef platform. RECORD. Lingatu - 1. DISTRIBUTION. Tropical Indo-Pacinc. Family PILARGIDAE Sigambra hanaokai (Kitamori, 1960) Ancistrosyllis hanaokai Kitamori, i96oa : 1086, fig. i. a-h. Sigambra hanaokai: Pettibone, 1966 : 181 (synonymy). HABITAT. Mud, 2-20 m depth. RECORDS. ML 39 - 3 ; ML 40 - i ; ML 41 - 10 ; ML 68 - 5 ; ML 157-1. NOTES. Larger specimens - up to 14 mm in length - were found inhabiting thin membraneous tubes covered in mud particles. DISTRIBUTION. Japan. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 137 Synelmis albini (Langerhans, 1881) Ancistrosyllis rigida Fauvel, 1919 : 337, fig. i. a-e; 1953 : no, fig. 53. a-e; Day, 1967 : 215. Synelmis albini: Pettibone, 1966 : 191, figs 19-21 (synonymy). HABITAT. Crevices in reef platform; amongst Phyllochaetopterus socialis tubes; in shell gravel and coarse sand. RECORDS. Komimbo Bay - 2 ; Matiu Is. - i ; Batuona Is. - 4; Mamara Pt. - I ; Graham Pt. - i ; Maramasike Pg. - i. DISTRIBUTION. Circumtropical. Family HESIONIDAE Gyptis capensis (Day, 1963) Oxydromus capensis Day, 1963 : 397, fig. 4. e-j. Gyptis capensis: Day, 1967 : 231, fig. 11.2. l-o. HABITAT. Under coral boulders on silty sand, MTL to LWM. RECORDS. Maraunibina Is. - 3. NOTES. A complete specimen measures 15 mm in length for about 70 segments. Notosetae are present from setiger 5. DISTRIBUTION. South Africa. Gyptis maraunibinae n. sp. (Fig. 5. A-F) DISTRIBUTION. The holotype is 45 mm long for 150 segments and the body is about 3 mm wide. The prostomium is rectangular, its width being about 1-5 times the length (fig. 5. A). Three antennae arise from the anterior margin of the prostomium; the laterals are about twice the length of the median. The two biarticulate palps, each com- posed of a short palpostyle and longer palpophore, are stouter and slightly longer than the lateral antennae. There are two pairs of eyes and those of the anterior pair are reniform in shape and are larger than those of the posterior pair. The proboscis carries ten papillae, each of which is broad and flap-like (fig. 5. B). Jaws are lacking, but there is a horny rim around the ventral and ventro-lateral margins of the proboscis. The tentacular cirri number eight pairs and each is faintly but closely annulated. The dorsal pair of the second segment is the longest, reaching back to about setiger 15. 138 P. E. GIBBS The first 4 or 5 setigers are uniramous, becoming biramous when a notopodial papilla appears on the antero-ventral side of the cirrophore from about setiger 6. The notopodia are small throughout the length of the body but the neuropodia are well developed, each with a pointed pre-setal lip and a rounded post-setal lip (fig. 5. c). Ventral cirri are about equal to the neuropodial lobe in length. In the middle of the body, notosetae include 2 or 3 rather stout, smooth spines (fig. 5. E) and 4 or 5 forked setae (fig. 5. D) ; neurosetae are falcigerous, each with a minutely serrated blade of varying length and with a bidentate tip consisting of a strong terminal tooth and a slender secondary one (fig. 5. F). The large, lobular, papillae on the proboscis are sufficient to distinguish G. maraunibinae from other Gyptis species. In other details the species resembles G. capensis (Day). HABITAT. Silty sand with shell gravel below coral boulder on reef platform. RECORD. Graham Pt. - i. British Museum (Natural History) Registration No. Holotype 1970-29 1.0mm 0.5mm =1 o 10 0.5mm FIG. 5. Gyptis maraunibinae n.sp. (A) Dorsal view of prostomium. (B) Anterior view of proboscis, (c) Parapodium from middle body. (D-E) Notopodial forked seta and spine. (F) Neuropodial falciger. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 139 Hesione splendida Savigny, 1818 H esione pantherina : Fauvel, 1953 : IO 4' fig- 49- a "g- Hesione splendida: Day, 1967 : 228, fig. 11.2. a-c. HABITAT. In Acropora rubble and shell gravel; in crevices and under coral boulders. RECORDS. Honiara - i ; Komimbo Bay - i ; Graham Pt. - 14. DISTRIBUTION. North Atlantic ; Mediterranean ; Indo-west-Pacific. Leocrates chinensis Kinberg, 1866 Leocrates claparedii: Fauvel, 1953 : 106, fig. 50. c-g; Day, 1967 : 230, fig. 11.2. g-k. Leocrates chinensis: Imajima & Hartman, 1964 : 82 (synonymy). HABITAT. In shell gravel and Acropora rubble; under coral boulders. RECORDS. Kokomtambu Is. - i ; Tetel Is. - 4; Komimbo Bay - i ; Fintry Pt. - i ; Maramasike Pg. - i. DISTRIBUTION. West Africa; Mediterranean; tropical Indo-west-Pacific. Family SYLLIDAE The species listed below for this family were identified by Dr. Minoru Imajima. A detailed account of this material will be published by Dr. Imajima at a later date. Subfamily AUTOLYTINAE Autolytus sp. HABITAT. On sponge Halichondria sp. at 5 m depth. RECORD. Yandina- i (damaged). Subfamily EXOGONINAE Brania clavata (Claparede, 1863) Grubea clavata: Fauvel, 1923 : 296, fig. 114 a-e. Brania clavata: Imajima, 1966 : 393, fig. i a-g. HABITAT. Coarse sand at LWM. RECORD. Komimbo Bay - i. DISTRIBUTION. North Atlantic; Mediterranean; Japan. i 4 o P. E. GIBBS Exogone gemmifera Pagenstecher, 1862 Exogone gemmifera : Fauvel, 1923 : 305, fig. 117. a-d; Imajima, 1966 : 397, fig. 2. a-h; Day, 1967: 274, fig. 12. 10. p-u. HABITAT. Amongst Phyllochaetopterus socialis tubes at LWM. RECORD. Matiu Is. - i. DISTRIBUTION. North Atlantic; South Africa; Mediterranean; Japan; northern North Pacific. Exogone uniformis Hartman, 1961 Exogone uniformis Hartman, 1961 : 73, pi. 6, fig. i, pi. 7, figs 1-4; Imajima, 1966 : 400, fig. 4. a-j. HABITAT. Coarse sand and silty fine coral sand at LWM. RECORDS. Komimbo Bay - i ; Matiu Is. - i. DISTRIBUTION. Southern California; Japan. Exogone verugera (Claparede, 1868) Exogone verugera: Fauvel, 1923 : 307, fig. 117. m-r; Imajima, 1966 : 399, fig. 3. a-h; Day, 1967 : 272, fig. 12. 10. g-1. HABITAT. On Eunice tubifex tube at LWM; on sponge Halichondria sp. at 5 m depth. RECORDS. Tetel Is. - i ; Yandina - i. DISTRIBUTION. North Atlantic; Mediterranean; South Africa; S.W. and E. Australia; North Pacific. Sphaerosyllis hirsuta Ehlers, 1897 Sphaerosyllis hirsuta Ehlers, 1897 : 48, pi. 3, figs 58-60; Imajima & Hartman, 1964 : 117, pi. 27, figs f-1; Imajima, 1966 : 404. HABITAT. Coarse sand at LWM ; on Eunice tubifex tube at LWM. RECORDS. Komimbo Bay - i ; Tetel Is. - i. DISTRIBUTION. Northern North Pacific; Japan; Australia; New Zealand; southern South America. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 141 Subfamily SYLLINAE Haplosyllis spongicola (Grube, 1855) Syllis (Haplosyllis) spongicola: Fauvel, 1923 : 257, fig. 95. a-d; 1953 : 147, fig. 75. a-d; Day, 1967 : 240, fig. 12. i. e-i. Haplosyllis spongicola: Imajima, i9&6a : 220, fig. 38. a-h. HABITAT. Abundant in sponges - Neofolitispa dianchora and Halichondria sp. - from 5 m depth. RECORDS. Yandina - num. DISTRIBUTION. Cosmopolitan in tropical and temperate waters. Langerhansia cornuta (Rathke, 1843) Syllis (Ehlersia) cornuta: Fauvel, 1923 : 267, fig. 100 g-i; 1953 : 153, fig. 79. g-i. Syllis (Langerhansia) cornuta: Day, 1967 : 244, fig. 12.2. s-u. Langerhansia cornuta: Imajima, i966b : 256, fig. 51. a-o. HABITAT. Coarse sand, silt ; on sponge Halichondria sp. at 5 m depth. RECORDS. Tetel Is. - 3; Komimbo Bay - 19; Yandina - i. DISTRIBUTION. Atlantic; Indo-Pacific. Langerhansia Irosea (Langerhans, 1879) Langerhansia rosea: Imajima, I966b : 259, fig. 52. a-m. HABITAT. On serpulid tubes at MTL; coarse sand at LWM. RECORDS. Tetel Is. - i ; Komimbo Bay - 2. Syllis longissima Gravier, 1900 Syllis longissima Gravier, 1900 : 154, pi. 9, fig. 7, text-figs. 17-23; Day, 1967 : 243, fig. 12.2. f-i HABITAT. Crevices in reef platform ; amongst Phyllochaetopterus socialis tubes at LWM. RECORDS. Matiu Is. - 8 ; New Manra - i ; Lingatu - 3. NOTE. This appears to be the first record of S. longissima in the west Pacific region. DISTRIBUTION. Red Sea; Persian Gulf; west coast of South America. 142 P. E. GIBBS Syllis sp. cf. gracilis Grube, 1840 Syllis gracilis: Fauvel, 1923 : 259, fig. 96. f-i; 1953 : 147, fig. 73. f-i; Imajima, ig66a : 248, fig. 49. a-k; Day, 1967 : 241, fig. 12.1. m-p. HABITAT. Amongst Phyllochaetopterus socialis tubes at LWM; on sponge Halichondria sp. at 5 m depth. RECORDS. Batuona Is. - 3 ; Yandina - i. Trypanosyllis coeliaca Claparede, 1868 Trypanosyllis coeliaca: Fauvel, 1923 : 270, fig. 101. f-h. HABITAT. Amongst Phyllochaetopterus socialis tubes at LWM. RECORD. Batuona Is. - i. NOTE. Previous records of T. coeliaca are confined to western Europe and the Mediterranean Sea. DISTRIBUTION. North Atlantic; Mediterranean. Trypanosyllis ( Trypanedenta) sp. HABITAT. Crevices in beachrock at LWM. RECORDS. Lauvie Is. - 3. Typosyllis alternata (Moore, 1908) Typosyllis alternata: Imajima, I966b : 273, fig. 58. a-1. HABITAT. Chiefly amongst Phyllochaetopterus socialis tubes ; under boulders and in crevices in reef platform ; on sponge Neofolitispa dianchora at 5 m depth. RECORDS. Tetel Is. -2; Matiu Is. -5; Cape Esperance-3; Batuona Is. -6; Yandina - 3. DISTRIBUTION. Japan; East Indies; west coast of North America. Typosyllis armillaris (Miiller, 1776) Syllis (Typosyllis) armillaris: Fauvel, 1923 : 264, fig. 99. a-f; Day, 1967 : 249, fig. 12.4. a-d. HABITAT. Amongst Phyllochaetopterus socialis tubes at LWM. RECORDS. Batuona Is. - 2. DISTRIBUTION. Cosmopolitan. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 143 Typosyllis brachycola (Ehlers, 1897) Syllis brachycola Ehlers, 1897 : 38, pi. 2, figs 46-47. Syllis (Typosyllis) brachychola: Augener, 1924 : 362. HABITAT. Below boulders in silty sand ; amongst Phyllochaetopterus socialis tubes ; interstices of coral Galaxea. RECORDS. Tetel Is. - i ; Naro Bay - 2; Batuona Is. - 3; Graham Pt. - 2. NOTE. T. brachycola is widely distributed in the southern temperate and sub- antarctic regions but this appears to be the first record from tropical waters. DISTRIBUTION. Southern South America; New Zealand. Typosyllis exilis (Gravier, 1900) Syllis (Typosyllis) exilis Gravier, 1900 : 160, pi. 9, fig. 9, text-figs 28-30; Day, 1967 : 250, fig. 12.4. h-j. HABITAT. Crevice in reef platform at MTL. RECORD. Mamara Pt. - i. DISTRIBUTION. Indo-west-Pacific to Gambier Islands. Typosyllis lucida (Chamberlin, 1919) Pionosyllis lucida Chamberlin, 1919 : 8. Typosyllis lucida: Hartman, 1968 : 489. HABITAT. Crevices in reef platform. RECORDS. Kokomtambu Is. - i ; Matiu Is. - 2. NOTE. This species has not been recorded since it was first described by Chamber- lin from Laguna Beach, California. DISTRIBUTION. Southern California. Typosyllis prolifera (Krohn, 1852) Syllis (Typosyllis) prolifera: Fauvel, 1923 : 261, fig. 97. a-g; 1953 : 149, fig. 74. a-g; Day, 1967 : 248, fig. 12.3. g-i. Typosyllis prolifera: Imajima, I9&6b : 292, fig. 65. a-n. HABITAT. Amongst Phyllochaetopterus socialis tubes at LWM ; on sponge Hali- chondria sp. at 5 m depth. RECORDS. Batuona Is. - i ; Yandina - 2. DISTRIBUTION. North Atlantic; Mediterranean; South Africa; Indo-west-Pacific. 144 P. E. GIBBS Typosyllis sp. HABITAT. On sponge Halichondria sp. at 5 m depth. RECORD. Yandina - i. Family SPHAERODORIDAE Sphaerodoridium claparedii (Greeff, 1866) Sphaerodorum claparedii: Fauvel, 1923 : 379, fig. 149. d-e. Sphaerodoridium claparedii: Liitzen, 1961 : 415. HABITAT. On sponge Halichondria at 5 m depth. RECORD. Yandina - i. NOTES. This specimen was overlooked during the primary sorting of a collection of polychaetes from sponges and was included in a large sample of syllids sent to Dr. M. Imajima who kindly identified it. This record considerably extends the known distribution of 5. claparedii which hitherto was recorded only from western Europe. DISTRIBUTION. European waters. Family NEREID AE Subfamily NAMANEREINAE Cryptonereis n. gen. Small nereids that are generally similar to Namanereis but which lack frontal antennae. Prostomium with two pairs of eyes and two biarticulate palps. Proboscis without paragnaths but with a pair of toothed jaws. Peristomium with three pairs of tentacular cirri but not parapodia. Parapodia are sesquiramous throughout, each lacking a notopodial lobe but with a notopodial aciculum. Superior neuropodial setae are spinigerous, the rest being falcigerous. At maturity, parapodia become biramous with the development of capillary setae. TYPE SPECIES. Cryptonereis malaitae Gibbs. Cryptonereis malaitae n. gen. n. sp. Fig. 6. (A-F) DESCRIPTION. Larger specimens measure between 10 and 15 mm long for 55 to 65 segments and are about 2 mm wide. The prostomium is rounded, roughly semi-circular in shape, with two pairs of eyes THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 145 and two biarticulate palps with broad palpophores. Frontal antennae are lacking (fig. 6. A). The peristomium carries three pairs of short tentacular cirri ; on each side two cirri are attached to a short base which is ventro-lateral in position and the thiid cirrus arises dorso-laterally on the peristomium (fig. 6. B). The proboscis lacks paragnaths but carries a pair of brown jaws, each with 9 or 10 teeth and a thin internal guard (fig. 6. c). The parapodia are sesquiramous in immature individuals, becoming biramous over most of the body when mature (see below). Notopodial lobes are lacking but black notopodial as well as neuropodial acicula persist (fig. 6. D). Neuropodia are bilobed with pointed pre-setal and rounded post-setal lips. The dorsal cirri are short and stout and the ventral cirri are very small. The neuropodial setae consist of one or two spinigers with minutely serrated blades (fig. 6. E) and four or five falcigers with short ciliated blades (fig. 6. F). The shaft and blade of the superior falciger often appear to be fused but the articulations of the other falcigers are usually distinct. Most of the specimens appear to be approaching maturity and, on preservation, gametes have been released from the parapodia at points just above the dorsal cirri. FIG. 6. Cryptonereis malaitae n.gen., n.sp. (A-B) Dorsal and lateral views of anterior region, (c) Left jaw in ventral view. (D) Parapodium from middle body of mature specimen. (E) Spiniger. (F) Falciger. 146 P. E. GIBBS In these specimens, long, slender capillary setae are present in both rami of the parapodia from setigers 8 or 9 to the last few segments. In some, these capillary setae are short and few in number but in others, probably at a more advanced stage of maturity, they are very much longer, being about three times the length of the falcigers. In the latter specimens, each parapodium has a compact notopodial bundle, composed of about 20 capillaries, arising from between the dorsal cirrus and the notopodial aciculum, and a further 8 to 10 capillaries appear amongst the neurosetae (fig. 6. D). The specimen chosen for the holotype shows this condition. In the collection there is an immature individual which is only 6-5 mm long for 35 segments (incomplete). This specimen does not possess the capillary setae found in the larger specimens. It is thought therefore that C, malaitae has an epitokous phase at maturity in which capillary (or natatory) setae (recalling those that are formed in the epitokes of some Syllidae) are developed and that the majority of the type specimens, collected on 20.xi.65, are approaching, or at, this stage of develop- ment. C. malaitae is apparently dioecious. The oocytes are yolky and those released on preservation by the females vary greatly in size but are mainly between 100 to 150(1 in diameter. Spermatozoa are recognizable in the coelomic contents of the more mature males. In life, specimens are purplish but assume a brownish colour in alcohol. It seems inadvisable to enlarge the generic description of the relatively well-known and widespread genus Namanereis Chamberlin (see Hartman, 19590) to include those forms which lack frontal antennae, hence the need to erect a new genus. Apart from its lacking frontal antennae and also its possession of capillary setae at maturity, Cryptonereis closely resembles Namanereis and the relationship between these two genera parallels that between Micronereis Claparede and Micronereides Day in terms of the presence or absence of antennae. HABITAT. Between the fibres composing a leaf frond of the coconut palm found stranded at about MTL. RECORDS. Alite Harbour, Langa-Langa Lagoon (Malaita) - 14. British Museum (Natural History) Registration No. Holotype 1970-30 Paratypes 1970-31 NOTES. It is difficult to decide whether the habitat of C. malaitae is marine or, like many other Namanereinae, damp-terrestrial since either is possible, depending on the period of time the leaf frond had been immersed in seawater. Interestingly, further specimens of this, or a closely related species, were collected by the Expedition Land Party (Mr. J. Peake and Dr. J. Greenslade) in moist leaf litter at an altitude of about 350 m at two separate localities, namely Betimatu on Mt. Austen, Guadal- canal and on Kolombangara in the New Georgia Group. This material consists of two specimens (one incomplete and the other dried) both about 5 mm long and resembling immature C. malaitae in detail. However in both specimens the pros- tomium is damaged and because the presence or absence of frontal antennae cannot be determined their identity must remain in question. It is possible that these two THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 147 specimens could be Namanereis amboinensis (Pflugfelder, 1933, as Lycastopsis amboinensis) which resembles the immature stage of C. malaitae in all details but possesses antennae. Namalycastis indica (Southern, 1921) Lycastis indica Southern, 1921 : 578, pi. 19, fig. 2. a-j, text-fig. 2. a-d. Namalycastis indica: De Silva, I965a : 5, fig. 2. a-e; Day, 1967 : 301, 14.2. p-s. HABITAT. Burrowing within the fibrous husks of Nipa palm nuts immersed in brackish water (5'6% ). RECORD. Lagoon at the mouth of the Lunga R. at Lunga Pt. - 12. NOTES. N. indica was found only in those Nipa nuts which were waterlogged, lying along and just below the water-line of the swamp. The largest specimen is 60 mm long. DISTRIBUTION. Indian Ocean. Subfamily NEREINAE Ceratonereis costae (Grube, 1840) Ceratonereis costae : Fauvel, 1923 : 349, fig. 136. a-f; 1953, X 94 % 98. a-f; Day, 1967 : 325, fig. 14.10. h-1. HABITAT. Amongst Phyllochaetopterus socialis tubes; on Halichondria sp. at 5 m depth. RECORDS. Batuona Is. - i ; Yandina - i. DISTRIBUTION. North Atlantic; Mediterranean; Indo-west-Pacific. Ceratonereis erythraeensis Fauvel, 1918 Ceratonereis erythraeensis Fauvel, 1918 : 505, fig. 2. a-k; Day, 1967 : 327, fig. 14.10. o-t. HABITAT. Muddy silt under boulders at MTL. RECORDS. Naro Bay - 20. DISTRIBUTION. Indian Ocean; East Australia; Japan. 148 P. E. GIBBS Ceratonereis mirabilis Kinberg, 1866 Ceratonereis mirabilis: Gravier, 1901 : 172, pi. n, fig. 42; Fauvel, 1953 : 200, fig. 103. a-c; Day, 1967 : 324, fig. 14.10. a-g. HABITAT. Silty sand under boulders; in Acropora rubble; within interstices of Galaxea; on Halichondria sp. at 5 m depth. RECORDS. Tetel Is. - 2 ; Komimbo Bay - i ; Graham Pt. - 2 ; Yandina - 3. DISTRIBUTION. Circumtropical. Nereis (Neanthes) caudata (Delle Chiaje, 1825) Nereis cricognatha: Fauvel, 1953 : 180, fig. 91. a-c. Nereis (Neanthes) arenaceodonta: Pettibone, 1963 : 162, figs 44.!, 45.6. Nereis (Neanthes) caudata: Day, 1967 : 321, fig. 14.9. f-j. HABITAT. Under coral boulder in muddy silt; sand at 5 m depth. RECORDS. Komimbo Bay - i ; ML 229 - i. DISTRIBUTION. Cosmopolitan. Nereis (Neanthes) unifasciata Willey, 1905 Nereis (Neanthes) unifasciata Willey, 1905 : 271, pi. 4, figs 85-88; Fauvel, 1953 : 182, 92. a-h; Day, 1967 : 318, fig. 14.7. u-y. HABITAT. Under coral boulder; in beachrock. RECORDS. Komimbo Bay - i ; Lauvie Is. - i. DISTRIBUTION. Tropical Indo-west-Pacific. Nereis (Neanthes) sp. cf. kerguelensis Mclntosh, 1885 Nereis kerguelensis Mclntosh, 1885 : 225, pi. 35, figs 10-12, pi. i6A, figs 17-18. HABITAT. Silty sand in crevice of Porites boulder. RECORD. Graham Pt. - i. NOTES. The specimen corresponds to N. kerguelensis in all details except that the notopodia of the anterior segments lack intermediate pre-setal lobes, giving a bi- lobed, not tri-lobed structure. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 149 Perinereis cultrifera (Grube, 1840) (Fig. 7. A) Perinereis cultrifera : Fauvel, 1923 : 352, fig. 137. a-1; 1953 : 206, fig. 106. a-1; Day, 1967 : 337, fig. 14.13. o-q. HABITAT. Chiefly under coral boulders on sand at MTL; also in crevices in reef platform and in beachrock. RECORDS. Kokomtambu Is. -i; Tetel Is. -3; Matiu Is. -6; New Manra-32; Maraunibina Is. -4; Lauvie Is. -i; Graham Pt. -4; Yandina-i; Fanalei-2 (heteronereids). NOTES. Two female heteronereid stages of this species are included in the collection made during the 'palolo' rising at Fanalei on 2.xi.66 (local name - 'falisi ogu'). They were taken between 2000 and 2200 hours and correspond to the description of this stage given by Izuka (1912) and Fauvel (1923) except that lower ligule of the notopodium in the modified parapodium has a small ear-shaped lobe arising from its ventral margin (fig. 7. A). These specimens measure 45 and 52 mm long for 116 and 225 segments respectively, with the modified parapodia commencing at setigers 20 to 22. DISTRIBUTION. Cosmopolitan. 1.0mm 1.0mm FIG. 7. Perinereis cultrifera (A) Modified parapodium of heteronereid (?) stage (setae omitted). Perinereis nuntia (B) Modified parapodium of heteronereid (<$) stage (setae omitted) . 150 P. E. GIBBS Perinereis nigropunctata (Horst, 1889) Nereis (Perinereis) nigro-punctata Horst 1889 : 171, pi. 8, figs 1-3; 1924 : 171. Perinereis nigro-punctata: Fauvel, 1953 : 210, fig. 107. b-f; Day, 1967 : 337, fig. 14.13. r-v. HABITAT. Amongst Phyllochaetoptems socialis tubes; under coral boulders; abundant in beachrock. RECORDS. Batuona Is. - 2 ; Graham Pt. - 2 ; Lauvie Is. - num. DISTRIBUTION. Tropical Indo-west-Pacific. Perinereis nuntia (Savigny, 1818) (Fig. 7. B) Perinereis nuntia: Fauvel, 1953 : 212, fig. 109. a-g; Day, 1967 : 334, fig. 14.12. p-s. HABITAT. Chiefly found under boulders lying on clean sand and gravel at MTL. RECORDS. Haroro - 3 ; Tetel Is. - 3 ; Cape Esperance - 17 ; Matiu Is. - 2 ; New Manra - 3 ; Mouth of Lunga R. - 4 ; Yandina - 50 ; Honiara - 20 ; Vera Vera Entrance - i (heronereid ($} ). NOTES. In these specimens there are I to 3 paragnaths in group i and the parag- naths of group VI are usually flattened, sometimes mixed with conical forms. However the number of paragnaths in group V is very variable : for example, in the sample of 50 individuals from the Yandina population, one specimen has four paragnaths in group V, 26 have three arranged in a triangle, n have two and 12 have only one. Thus in terms of the subspecific forms (see Fauvel, 1953) Perinereis nuntia brevicirrus composes about half the population and P. nuntia vallata about a quarter, the remaining quarter being intermediate in character between these two forms. The male heteronereid stage of P. nuntia brevicirrus was captured swimming near the surface at Vera Vera Entrance on 8.xi.65 at 1500 hours. It measures 90 mm long for about 150 segments, the modification of the parapodia starting between setigers 23 to 27. The structural details of the modified parapodium (fig. 7. B) follow those described and figured by Izuka (1912, as N. mictodonta). DISTRIBUTION. South Africa; Indo-Pacific. Platynereis insolita Gravier, 1901 Platynereis insolita Gravier 1901 : 197, pi. 12, fig. 53, text-figs 203-206; Day, 1967 : 307, fig. 14.4.1. HABITAT. Under coral boulder; amongst Phyllochaetopterus socialis tubes and Amphiroa growth. RECORDS. Matiu Is. - i ; Komimbo Bay - i ; New Manra - 2. DISTRIBUTION. Indian Ocean. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 151 Pseudonereis anomala Gravier, 1901 Pseudonereis anomala Gravier, 1901 : 191, pi. 12, figs 50-52, text-figs 194-202; Fauvel, 1953 : 217, fig. no. e-g; Day, 1967 : 333, fig. 14.12. g-j. HABITAT. Abundant amongst Phyllochaetopterus socialis tubes and Amphiroa; burrowing in reef platform and beachrock. RECORDS. Mamara Pt. - i ; Batuona Is. - num. ; New Manra - num. ; Yandina - 6 ; Maramasike Pg. - 3. DISTRIBUTION. Indo-Pacinc. Pseudonereis masalacensis (Grube, 1878) Nereis (Lycoris) masalacensis Grube, 1878 : 75, pi. 5, fig. 4. Pseudonereis masalacensis: Fauvel, 1947 : 51, fig. 49. a-k. HABITAT. Under coral boulders on sand at MTL; amongst Phyllochaetopterus socialis tubes and algal growth (Amphiroa). RECORDS. Batuona Is. - 2 ; New Manra - 3 ; Yandina - 2. DISTRIBUTION. West and South Pacific. Pseudonereis variegata (Grube, 1857) Pseudonereis gallapagensis : Fauvel, 1953 : 2I 5. fig- IIQ - a ~ c - Pseudonereis variegata: Day, 1967 : 331, fig. 14.12. a-f. HABITAT. Burrowing in reef platform and beachrock; amongst Amphiroa; under boulders on clean sand. RECORDS. Matiu Is. - 8 ; Sifola - 8 ; New Manra - 2 ; Lauvie Is. - 3 ; Yandina - 2. DISTRIBUTION. Circumtropical. Solomononereis n. gen. Prostomium with two antennae, two biarticulate palps and two pairs of eyes. Peristomium with four pairs of tentacular cirri, dorsal pairs long, ventral pairs much shorter. Proboscis with small, rod-like chitinous paragnaths arranged in eight discrete groups on the maxillary ring; oral ring without paragnaths. Parapodia biramous with spinigerous setae in both rami throughout the body; falcigerous setae in both rami in the middle and posterior segments. TYPE SPECIES. Solomononereis marauensis Gibbs 152 P. E. GIBBS Solomononereis marauensis n. gen. n. sp. (Fig. 8. A-H) DESCRIPTION. The holotype measures 45 mm for 123 segments and is incomplete posteriorly. The largest of the three paratypes is 40 mm for 157 segments. The width of the body is about 3 mm. The prostomium is rectangular in shape with two short, widely spaced antennae, two pairs of eyes, and a pair of palps with stout palpophores, often with a constriction just below the tip, and small palpostyles (fig. 8. A). The peristomium is weakly developed and is present as a narrow band on the dorsal surface but does not form a distinct ring ventrally. Of the four pairs of tentacular cirri, the two dorsal pairs are very long, extending back as far as setiger 20 but the ventral pairs are short, reaching to setiger 3 only. FIG. 8. Solomononereis marauensis n.gen., n.sp. (A) Dorsal view of anterior region and proboscis. (B) Ventral view of proboscis, (c) Paragnaths of Group II. (D-F) Anterior, middle and posterior parapodia. (G) Notopodial falciger. (H) Subacicular neuro- podial spiniger. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 153 The proboscis carries a pair of brown, curved jaws, each with 7 or 8 teeth. The chitinous paragnaths are confined to the maxillary ring ; they are minute, rod-like (7-iO{/. in diameter) structures which are closely packed together in eight groups, three on the dorsal side and five on the ventral (fig. 8. A, B). Each of these discrete groups is composed of 10 to 15 paragnaths (fig. 8. c). The structure of the parapodia changes progressively throughout the body and those of the anterior region are larger than those of the middle and posterior parts of the body. In the anterior region, the notopodium has two pointed ligules and the neuropodium has a bilobed upper ligule, composed of a pointed pre-setal lip and a rounded post-setal lip, and a pointed lower ligule (fig. 8. D). Between setigers 20 and 30, the upper notopodial ligule and the lower neuropodial ligule decrease in size, the former being lost altogether in more posterior segments while the latter persists as a rudiment (fig. 8. E, F). The dorsal cirri are slightly longer than the parapodial lobes in anterior segments but are relatively much longer in the posterior segments because of the diminished size of the parapodia. At the base of the dorsal cirri, there are conspicuous glands which are roughly oval in shape and have a yellowish colour in preserved (alcohol) specimens. Each gland consists of fascicles of spindle-shaped cells which appear to open to the exterior at a pore situated just above the base of the dorsal cirrus. Spinigerous setae are present in both notopodial and neuropodial bundles through- out the body. The notosetae are all homogomphic while the neurosetae vary from homogomphic to hemigomphic in the superior position, becoming heterogomphic in the inferior part. Superior sub-acicular spinigers have coarsely serrated blades (fig. 8. H) but all others are finely serrated. In the region of setiger 40, and persisting to the posterior end, two or three homogomph falcigers (fig. 8. G) appear in the notopodial bundle and, in addition, a single heterogomph falciger appears in the supra-acicular part of the neuropodium. Each falciger has an elongate, ciliated blade with a curved tip supported by a distinct tendon. All setae have a crystalline appearance. A dark brown pigment remains over the dorsal surface of the proboscis, prostomium and anterior segments in preserved specimens. Solomononereis resembles Ceratonereis in having paragnaths only on the maxillary ring of the proboscis but this similarity is superficial, the shape, as well as the arrange- ment, of the 'toothpick' or rod-shaped paragnaths possessed by Solomononereis being very different to that of the conical paragnaths found in Ceratonereis. Other features separating Solomononereis from other nereid genera include the weakly developed peristomial ring and the arrangement of the setae, i.e. spinigers are present in both rami throughout the body and, in addition, a few falcigers appear in both rami of the middle and posterior parapodia. HABITAT. In sticky mud above MTL close to freshwater outflows. RECORDS. Fintry Pt. - i (holotype) ; Nggela Is. (Sandfly Passage) - 3. British Museum (Natural History) Registration No. Holotype 1970-32 Paratypes 1970-33 154 p - E - GIBBS Family NEPHTYIDAE Nephtys (Aglaophamus) munamaorii n. sp. (Fig. 9. A-B) DESCRIPTION : The holotype (from ML 37) is the largest specimen in the col- lection. It measures 16 mm in length for 60 segments and is about i mm wide. The prostomium is rectangular in shape, its length being about i -5 times the width, and has four small antennae on the antero-lateral margins. The proboscis has a long median papilla on its dorsal side with 14 rather indistinctly aligned rows of 5 or 6 papillae. Two small eyes, which appear as black spots, are situated near the posterior border of the second segment. Branchiae commence on setiger 3 and are well developed in the anterior half of the body but gradually diminish in size in the posterior half so as to be absent from the last 10 or 12 segments. Each branchia is involute with a dorsal cirrus at its base (fig. 9. A). The setigerous lobes of the parapodial rami are pointed. In the anterior segments, both the pre-setal and the post-setal lamellae are rounded, the latter being slightly larger, but in posterior segments these lamellae are much reduced in size (fig. 9. B). There are no superior neuropodial lamellae. Setae are of the three usual types. Barred (or laddered) -capillary setae compose the anterior fan which also includes a few smooth capillaries : in posterior segments the barred setae are longer and more slender with less distinct bars. Smooth or minutely serrated capillaries form the posterior fan : in the latter, there is also a row of lyriform forked setae. Four species belonging to the subgenus Aglaophamus have been described from the tropical Indo-west-Pacific region. These are N. (A.) dibranchis Grube, N. (A.) 0.5mm B FIG. 9. Nephtys (Aglaophamus) munamaorii n.sp. (A-B) Anterior views of parapodia from setigers 19 and 45 respectively (setae omitted). THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 155 lyrochaeta Fauvel, N. (A.) mirasetis Hoagland, and N. (A.) sinensis Fauvel. In all four species the neuropodia of anterior segments have superior lamellae. The absence of this lamella, in addition to further differences in the parapodial structure, particularly the shape of the pre- and post-setal lamellae, is sufficient to distinguish N. (A.) munamaorii. HABITAT. Mud and silty sand, 2-22 m depth. RECORDS. ML 37-2 (including holotype) ; ML 69 - i ; ML 157 - i ; ML 188 - 8; ML 194 - 2 ; ML 196 - i ; ML 218 - 2. British Museum (Natural History) Registration No. Holotype 1970-34 Paratypes 1970-35-41 Nephtys (Micronephthys) sphaerocirrata Wesenberg-Lund, 1949 Nephthys sphaerocirrata Wesenberg-Lund, 1949 : 294, figs 24-26. Nephtys (Micronephthys) sphaerocirrata: Day, 1967 : 347, fig. 15.3. a-d. HABITAT. Silty sand at 15 m depth. RECORD. ML 116 - i. NOTES. The single specimen is an anterior fragment of 33 segments, 5 mm in length. It differs from the type specimen in having two pairs of reddish eyes situated near the posterior margin of the prostomium. These may represent a sexual character since the specimen is a mature female containing oocytes. Other details agree with the type description. DISTRIBUTION. Persian Gulf; South Africa; Marshall Islands. Nephtys (Nephtys) sp. cf. palatii Gravier, 1904 Nephthys palatii Gravier, 1904 : 472; 1906 : 129, pi. i, figs 163-164, text-figs 286-289. HABITAT. A wide variety of deposits from mud to coarse sand, 2-18 m depth. RECORDS. ML 39 - i ; ML 68 - i ; ML 97 - i ; ML 156- i ; ML 191 - i ; ML 192 - 1 ; ML 196 - i ; ML 203 - i ; ML 229 - 2. NOTE. These specimens are close to N. palatii but the identity is uncertain because, on dissection, a median dorsal papilla could not be seen on the proboscis. Family LACYDONIIDAE Paralacydonia weberi Horst, 1923 Paralacydonia weberi Horst, 1923 : 221, figs 1-2; Fauvel, 1953 : 129, figs 65. e-f. HABITAT. Mud and sand, 2-24 m depth. 156 P. E. GIBBS RECORDS. ML 29 - i ; ML 190 - i ; ML 191 - i ; ML 230 - i. NOTE. The largest of the specimens is 10 mm long for 50 segments and is much smaller than the holotype (40 mm for 100 segments) which was dredged from deep water (959 m). DISTRIBUTION. Burma; East Indies; Samoa; Bass Strait. Family GLYCERIDAE Subfamily GLYCERINAE Glycera gigantea Quatrefages, 1865 Glycera gigantea : Fauvel, 1923 : 387, fig. 152. d-k; 1953 : 296, fig. 152. d-k; Day, 1967 : 362, fig. 16.2. 1-n. HABITAT. A wide variety of deposits, chiefly silty mud and sand, from above MTL to 33 m depth. RECORDS. Tetel Is. -i; Florida Is. -3; Komimbo Bay -7; New Manra-i; Graham Pt. -8; Fintry Pt. -4; Maraunibina Is. -i; ML 229-1. (ML stations 100, no, 192, 195 - one juvenile (?) at each). DISTRIBUTION. North Atlantic; Mediterranean; Laccadive Sea; New Britain; N.E. Australia; Japan; eastern North Pacific. Glycera lancadivae Schmarda, 1861 Glycera lancadivae Schmarda, 1861 : 95, with text-figs; Fauvel, 1953 : 291, fig. 147. g-h; Day, 1967 : 359- HABITAT. A wide variety of deposits, from fine coral mud to coarse sand and shell gravel from above MTL to n m depth. RECORDS. Tetel Is. -3; Komimbo Bay -4; Naro Bay-i; Matiu Is. -11; Maraunibina Is. - 22 ; Graham Pt. - 8 ; Fintry Pt. - 9 ; Yandina - 4; ML 98 - i ; ML 203 - i ; ML 229 - 2. DISTRIBUTION. Tropical Indian Ocean; N.E. Australia; New Caledonia. Glycera longipinnis Grube, 1878 Glycera longipinnis Grube, 1878 : 182, pi. 8, fig. 9; Fauvel, 1932 : 125, pi. 4, figs 11-14; I 953 : 291, fig. 148. a-d; Day, 1967 : 356, fig. 16.1. a-f. HABITAT. Muddy silt (Thalassia flat) at LWM. RECORD. Komimbo Bay - i. DISTRIBUTION. Tropical Indo-west-Pacific. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 157 Glycera rouxi Audouin & Milne-Edwards, 1833 Glycera rouxi: Fauvel, 1923 : 389, fig. 153. a-c; 1953 : 2 97. fig- J 49- a -d; Day, 1967 : 362, fig. 16.3. a-d. HABITAT. Silty mud at 9 m depth. RECORD. ML 38-1. DISTRIBUTION. North Atlantic; Mediterranean; Indo-west-Pacific to Japan; California. Family EUNICIDAE Subfamily EUNIGINAE Eunice afra Peters, 1854 Eunice afra: Grassland, 1904 : 289, pi. 20, fig. 1-5, text-figs 43-45; Fauvel, 1953 : 2 35> fig- IJ 6. h-i; Day, 1967 : 392, fig. 17.5. a-e. HABITAT. Boring in coral on reef platform and in beachrock; amongst Phyl- lochaetopterus socialis tubes at LWM. RECORDS. Matiu Is. -4; Mamara Pt. -2; Batuona Is. -2; New Manra-i; Lauvie Is. - 2; Lingatu - 4; Yandina - i ; Maramasike Pg. - 5. DISTRIBUTION. Indo-west-Pacific. Eunice antennata (Savigny, 1820) Eunice antennata: Crossland, 1904 : 312, pi. 22, figs 1-7, text-figs 56-60; Fauvel,! 953 : 240, fig. 118. f-g; Day, 1967 : 384, fig. 17.2. k-q. HABITAT. Boring in coral and under coral boulders on reef platform. RECORDS. Matiu Is. - 5 ; Graham Pt. - 2 ; Yandina - i. DISTRIBUTION. North Atlantic; tropical Indo-Pacific. Eunice aphroditois (Pallas, 1788) Eunice aphroditois: Fauvel, 1953 : 233, fig. 117. a-g; Day, 1967 : 389, fig. 17.4. l-o. HABITAT. In Acropora rubble and under coral boulder on reef platform at LWM. RECORDS. Tetel Is. - i ; Maraunibina Is. - 2. DISTRIBUTION. North Atlantic; Mediterranean; Indo-Pacific to Japan and southern California. 158 P. E. GIBBS Eunice coccinea Grube, 1878 Eunice coccinea Grube, 1878 : 153, pi. 9, fig. i; Grassland, 1904 : 297, pi. 20, figs 6-7, text-figs 46-51; Fauvel, 1953 : 2 36, fig- 118. a-e; Day, 1967 : 389. HABITAT. Boring in coral on reef platform. RECORDS. Komimbo Bay - i ; Mamara Pt. - i ; New Manra - i ; Lingatu - i ; Maramasike Pg. - 2; Fanalei - 2 (posterior fragments). NOTES. The two posterior fragments in the collection from the Fanalei 'palolo' rising (2-3.ix.66) can be identified by their relative size, absence of gills, parapodial structure and setae. One is female and contains large spherical oocytes (360(0. in diameter). On one side of each of these oocytes there is a patch of dark green pigment, surrounding a clear circular spot. The time of spawning is recorded as midnight to 0600 hours. The local name is 'raka-raka'. DISTRIBUTION. Gulf of Guinea; tropical Indo-west-Pacific. Eunice grubei Gravier, 1900 Eunice grubei Gravier, 1900 : 258, pi. 14, figs. 87-88, text-figs 125-129; Fauvel, 1953 : 237, fig. 119. a-e; Day, 1967 : 391. HABITAT. Sedimented crevices in Forties boulders. RECORDS. Graham Pt. - 2. NOTES. One specimen is complete and, in this, the branchiae, which are present only on the anterior half of the body, have a maximum of 4 or 5 filaments. DISTRIBUTION. Tropical Indo-west-Pacific. Eunice marovoi n. sp. (Fig. 10. A-H) Eunice sp.: Gibbs, 1969 : 455, fig. 133. DESCRIPTION. Complete specimens from the dredged material have a maximum length of 15 mm for 60 to 70 segments and a width of i-o to 1-5 mm. Larger specimens discovered living on Cerithium vertagus are all incomplete but are estimated to have been 20 to 25 mm in length. The holotype from ML 96 is 15 mm long for 66 segments. The prostomium is bilobed with a shallow median groove between the palps (fig. 10. A). The antennae are weakly annulated and the median is about twice as long as the laterals, which, in turn, are about equal in length to the tentacular cirri (fig. 10. B). The eyes are black and reniform in shape. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 159 The mandibles are elongate calcified plates. The maxillae are almost transparent but the toothed edges are brownish in colour and the medial and anterior edges of the maxillae supports ("carriers") are black, forming a T-shaped figure (fig. 10. c). Due to the transparent nature ot the maxillae the details are difficult to determine. Maxillae I are falcate and devoid of basal teeth. The left Maxilla II is falcate with 4 to 6 ill-defined basal teeth. The right Maxilla II, left Maxilla III and Maxillae IV all have 10 to 13 small teeth while Maxillae V are toothless plates. The maxillary formula thus reads: MX. 1 = 1 + 1; MX. II = (i + (4 6)) + (10 13) ; MX. Ill = (10 13) + o; MX. IV = (10 13) + (10 13). Branchiae commence on setiger 3 on all specimens and these are strongly arched over the dorsum, with a maximum of 5 or 6 filaments (fig. 10. D). In the larger specimens there are 21 to 23 pairs (i.e. extending to setigers 23 to 25) but smaller FIG. 10. Eunice marovoi n.sp. (A) Dorsal view of prostomium. (B) Antero-lateral view of anterior region, (c) Jaws. (D-E) Branchia and parapodium of setiger 10. (F) Comb seta. (G) Falciger. (H) Acicular seta. 160 P. E. GIBBS specimens have only 15 to 20 pairs. The dorsal cirri are shorter but slightly stouter than the branchial filaments. On branchiferous segments, the ventral cirri are short and are swollen at their bases (fig. 10. E), a feature that is absent in the more posterior segments. Acicula and setae are transparent. The capillary setae are slender with finely serrated edges. Comb setae are few in number and have about 7 teeth, one of the outer pair being greatly elongated (fig. 10. F). The falcigerous setae have bidentate blades with faintly serrated guards (fig. 10. G). Acicular setae are tridentate with rounded guards (fig. 10. H) ; two or three occur in each parapodium from setigers 15 to 20 to the posterior end. The projecting tips of the acicula are rounded and slightly curved. The colour of preserved specimens is white. Despite their small size, a number of the specimens are mature with coelomic gametes. It would appear therefore that E. marovoi does not exceed 20 to 25 mm in length even when fully grown. E. marovoi is distinct from all other Eunice species known from the Indo-west- Pacific region in terms of its maxillary structure, the number of branchiae and branchial filaments, in combination with the structure of the setae. HABITAT. A wide variety of deposits ranging from mud to coarse sand from LWM to 33 m depth. At LWM on a sand flat to the north of Tankomo Is. (in the southern part of Marovo Lagoon) E. marovoi was discovered attached to the shell of the gastropod Cerithium vertagus L. RECORDS. ML 37 - i ; ML 96-1 (holotype) ; ML 97 - i ; ML 100 - i ; ML no - 9 ; ML 134 - i ; ML 192 - 2 ; ML 218 - i ; ML 229 - i ; ML 230 - 2 ; north of Tankomo Is. -5. British Museum (Natural History) Registration No. Holotype 1970-42 Paratypes 1970-43-52 NOTES. The tube of this species is constructed of coarse bottom material, such as scaphopod and bivalve she)l fragments, cemented to an organic lining. In those specimens associated with Cerithium vertagus, the tube was constructed along the length of the upper surface of the gastropod shell (see Gibbs, 1969). Eunice norvegica (Linnaeus, 1767) Eunice floridana : Fauvel, 1923 : 402, fig. 157. a-g; 1953 : 235, fig. 117. a-g. Eunice norvegica: Pettibone, 1963 : 240, fig. 63. f; Day, 1967 : 388, fig. 17.3. r-v. HABITAT. On surface of Acropora sp. RECORD. Yandina - 1. NOTES. The specimen is 17 mm long, 3 mm wide and has 70 segments (apparently regenerating from setiger 27). Its preserved colour is medium brown with three whitish spots per segment arranged in longitudinal lines down the body; the gills THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 161 and dorsal cirri are purple. In life the colour was bluish-black with orange spots. The maxillary formula is: MX. I = i -|- i; MX. II = 7 -j- 7; MX. Ill = 6 + o; MX. IV = 4 + 8; MX. V = i + i. The labrum is calcined and pearly- white in colour. The branchiae start on setiger 5 and have a maximum of 6 or 7 filaments. Acicular setae are black with conspicuous guards. In specimens from other localities the branchiae commence between setigers 7 to 10 but otherwise this specimen agrees in detail. Apart from a single specimen from Indo-China (Fauvel, 1939) no other records of E. norvegica from the Pacific Ocean have been traced despite the species being widespread and occurring in depths of over 1500 m (Pettibone, 1963). DISTRIBUTION. North Atlantic ; Mediterranean ; Indian Ocean ; Indo-China. Eunice tentaculata Quatrefages, 1865 Eunice tentaculata: Fauvel, 1953: 234, fig. 118. m-p; Day, 1967 : 391, fig. 17.4. s-v. HABITAT. Under coral boulders on silty sand ; amongst Phyllochaetoptems socialis tubes. RECORDS. Maraunibina Is. - 2; Batuona Is. - i. DISTRIBUTION. Indo-west-Pacific. Eunice tubifex Grassland, 1904 Eunice tubifex Grassland, 1904 : 303, pi. 21, figs 1-8, text-figs 52-55; Fauvel, 1953 : 2 3 2 n g- Il( >. a-g; Day, 1967 : 386, fig. 17.3. k-q. HABITAT. In coral at LWM and on wharf piles at 5 m depth. RECORDS. Tetel Is. - 2 ; Yandina - 2. DISTRIBUTION. Tropical Indo-west-Pacific. Eunice (Palola) siciliensis Grube, 1840 Eunice (Palola} siciliensis: Fauvel, 1923 : 405, fig. 159. e-m; 1953 : 241, fig. 121. e-m; Day, 1967 : 382, fig. 17.2. a-f. HABITAT. Boring in coral and beachrock; in Acropora rubble and shell gravel; under coral boulders in silty sand. RECORDS. Kokomtambu Is. - i ; Tetel Is. - 16 ; Komimbo Bay - 2 ; Mamara Pt. - 3 ; Matiu Is. - 34 ; Yandina - 2 ; Lingatu - 6 ; New Manra - 9 ; Lauvie Is. - n ; Graham Pt. - 4; Maramasike Pg. - 10; Fanalei - 4 (posterior fragments). 162 P. E. GIBBS NOTES. The four posterior fragments collected during the spawning at Fanalei can be readily identified by the absence of comb and acicular setae, the black acicula and the dark spot on the ventral surface of each segment. Three of the fragments are female and contain spherical oocytes about 2OO[A in diameter. The time of spawning on 2.xi.66 was between 2000 and 2200 hours. The local name is "falisi ogu". DISTRIBUTION. Mediterranean; circumtropical. Lysidice collaris Grube, 1870 Lysidice collaris: Fauvel, 1953 : 248, fig. 124. a-g; Day, 1967 : 402, fig. 17.8. a-f. HABITAT. Boring in coral and beachrock; amongst Phyllochaetopterus socialis tubes ; in the sponge Halichondria sp. at 5 m depth. RECORDS. Matiu Is. - 5 ; Batuona Is. - 1 ; New Manra - 3 ; Sifola - 2 ; Lingatu - 2 ; Mamara Pt. - 2 ; Graham Pt. - i ; Lauvie Is. - i ; Yandina - 12 ; Fanalei - i. NOTES. The specimen from the Fanalei "palolo" rising is spent. It has enlarged eyes provided with lenses. DISTRIBUTION. Tropical Indo-Pacific to Japan and Gambier Islands. Marphysa macintoshi Crossland, 1903 Marphysa macintoshi Crossland, 1903 : 137, pi. 14, figs 3-6, text-fig. 12; Fauvel, 1953 : 246; Day, 1967 : 396, fig. 17.6. a-e. HABITAT. Silty mud at MTL. RECORDS. Nggela Is. - 3. DISTRIBUTION. Tropical Indian Ocean. Nematonereis unicornis (Grube, 1840) Nematonereis unicornis: Fauvel, 1923 : 412, fig. 162. h-n; 1953, 249, fig. 124. h-n; Day, 1967 : 403, fig. 17.8. j-n. HABITAT. Under boulders in muddy silt at MTL; amongst Phyllochaetopterus socialis tubes at LWM. RECORDS. Tetel Is. - i ; Batuona Is. - i. DISTRIBUTION. North Atlantic; Mediterranean; tropical Indo-west-Pacific. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 163 Subfamily ONUPHINAE Onuphis (Nothria) holobranchiata Marenzeller, 1879 Onuphis (Nothria] holobranchiata Marenzeller, 1879 : 132, pi. 4, fig. i; Izuka, 1912 : 106, pi. n, figs 10-12; Fauvel, 1953 : 2 56, fig- 127. f-h; Day, 1967 : 424, fig. 17.13. f-g. HABITAT. A wide variety of deposits, from silty sand to coarse sand and shell gravel from MTL to LWM ; mud with organic debris at 2 m depth. RECORDS. Tetel Is. -14; Komimbo Bay-i; Matiu Is. -i; Kalota Is. -i; ML 68 - 37. NOTES. The distribution of the simple branchiae over the anterior segments shows some degree of variation, perhaps reflecting differences in the growth stages. For example, in the smaller specimens present in the large sample obtained at ML 68 the branchiae commence on setigers 2 to 5 whereas in the larger specimens from the same sample they begin on the first setiger, as typical for the species. Specimens of all sizes possess similar pseudocompound hooks. The dredged specimens were chiefly extracted from tubes composed of plant debris and sediment particles cemented to an organic lining and often the tubes were found to run along the central cavities of hollow plant stems. Specimens from the littoral zone had tubes encrusted with coarse sand grains and Halimeda discs. DISTRIBUTION. Tropical Indo-west-Pacific to Japan. Subfamily LYSARETINAE Oenone fulgida (Savigny, 1818) Aglaurides fulgida: Fauvel, 1953, 250, fig. 125. a-f. Oenone fulgida: Crossland, 1924 : 85, fig. 106-111; Imajima & Hartman, 1964 : 267; Day, 1967 : 426, fig. 17.14. a-g. HABITAT. Boring in coral (Porites). RECORDS. Tetel Is. - 2 ; Yandina - i. DISTRIBUTION. Circumtropical. Subfamily LUMBRINERINAE Lumbrineris latreilli Audouin & Milne-Edwards, 1834 Lumbriconereis latreilli: Fauvel, 1923 : 431, fig. 171. m-r; 1953 : 266, fig. 134. m-r. Lumbrineris latreilli: Day, 1967 : 438, fig. 17.16. p-t. HABITAT. Under coral boulders in silty sand; mud at 18 m depth. 164 P. E. GIBBS RECORDS. Tetel Is. - I ; Komimbo Bay - i ; Graham Pt. - 2 ; Maraunibina Is. - I ; ML 188 - i. DISTRIBUTION. Cosmopolitan. Lumbrineris papillifera (Fauvel, 1919) Lumbriconereis papillifera Fauvel, igiga, : 395, pi. 15, figs 9-16. Lumbrineris papillifera: Day, 1967 : 442, fig. 17.17. p-s. HABITAT. Silty sand at 9 m depth. RECORD. ML 56-1. NOTES. The specimen is incomplete posteriorly but middle segments having the characteristic ventral papillae are present and other details correspond to the species description. This is the first record of the species from the Pacific region. DISTRIBUTION. Tropical East Africa. Lumbrineris sphaerocephala (Schmarda, 1861) Notocirrus sphaerocephalus Schmarda, 1861 : 116, with text-figs. Lumbriconereis sphaerocephala: Ehlers, 1904 : 33, pi. 5, figs 3-11; Fauvel, 1953 : 267, fig. 135. c-f. HABITAT. Clean sand at LWM. RECORD. Komimbo Bay - i. DISTRIBUTION. Indo-west-Pacific. Subfamily ARABELLINAE Arabella tricolor (Montagu, 1804) Arabella iricolor: Fauvel, 1923 : 438, fig. 175. a-h; 1953 : 2 74 ^g- I 4- a ~^'> Day, 1967 : 446, fig. 17.18. i-m. HABITAT. Under boulders in muddy silt, sand and shell gravel at MTL. RECORDS. Tetel Is. - 3; Maraunibina Is. - 2; Graham Pt. - 6. DISTRIBUTION. Cosmopolitan. Arabella mutatis (Chamberlin, 1919) Arabella mutans: Fauvel, 1953 : 275, figs 140. i-1, 143. g-i; Day, 1967 : 446, fig. 17.18. f-h. HABITAT. Amongst Phyllochaetopterus socialis tubes at LWM. RECORDS. Batuona Is. - 5. DISTRIBUTION. North Atlantic; East Africa; Easter Is.; eastern Pacific. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 165 Drilonereis major Grassland, 1924 Drilonereis major Crossland, 1924 : 57, figs 73-79; Fauvel, 1953 : 277, fig. 143. k-1. HABITAT. Boring (?) in coral on reef platform at LWM. RECORDS. Maramasike Passage - 2. NOTES. The prostomium is semi-circular and flattened. The maxillary formula is MX. I = i + i ; MX. II = 6 + 6; MX. Ill = (3 4) + (3 4); MX. IV = (2 3) + (2 3) : the teeth of MX. Ill and MX. IV are very irregular in size and difficult to count, as noted by Fauvel (1932). This is a new record for the Pacific region. DISTRIBUTION. Gulf of Suez; Zanzibar; Bay of Bengal. Subfamily DORVEILLEINAE Dorvillea sp. HABITAT. Coarse sand at MTL. RECORD. Komimbo Bay - i. NOTES. The specimen is 7 mm long (incomplete). Its antennae have eight annuli and the dorsal cirri, commencing on setiger 2, are mounted on long cirrophores. Forked setae are present from the first setiger and have unequal prongs. It is close to D. incertus (Schmarda) but differs from this species in having forked setae from the first, not the second, setiger. Family ORBINIIDAE Haploscoloplos bifurcatus Hartman, 1957 Haploscoloplos bifurcatus Hartman, 1957 : 2 77- HABITAT. Mud and silty sand, 2-13 m depth. RECORDS. ML 68 - 16 ; ML 69 - i ; ML 228 - 2. NOTES. The thorax is composed of 17 to 20 setigers. Branchiae commence on setigers 8, 9 or 10 as small triangular lobes, increasing in size on the posterior thoracic segments. Characteristically, the post-setal lobes of the neuropodia in the posterior half of the thorax (from setiger 12) are divided. Abdominal parapodia lack inter- ramal cirri. DISTRIBUTION. South and south-east Australia. 166 P. E. GIBBS Naineris laevigata (Grube, 1855) Naineris laevigata: Fauvel, 1927 : 22, fig. 7. a-1; 1953 : 310, fig. 163. a-1; Hartman, 1957 : 2 97. pi. 35, figs 1-8; Day, 1967 : 539, fig. 32.2. a-f. HABITAT. Medium to coarse sand, MTL to LWM. RECORDS. Haroro - i ; Graham Pt. - 2. DISTRIBUTION. Cosmopolitan in warm waters. Family SPIONIDAE Dispio maroroi n. sp. (Fig. ii. A-D) DESCRIPTION. All four specimens are incomplete. The holotype is 18 mm in length with 46 segments and the largest of the paratypes is 45 mm long for 86 seg- ments. The diameter of the body is about 2 mm. The prostomium is pointed anteriorly and extends back as an occipital ridge to the first segment where it forms a small occipital tentacle (fig. n. A). On either side of this ridge there are conspicuous nuchal slits which are concealed at their posterior ends by dorsal extensions of the peristomium. Two small eyes, not visible from the dorsal aspect, are situated laterally on the prostomium. The palps are missing on all specimens. The parapodia of the first two segments differ from those of subsequent segments in that the post-setal lobes of the notopodia are expanded, with 6 or 7 digitiform processes along their free edges (fig. n. B). The lobes of subsequent notopodia have smooth outlines. The post-setal neuropodial lobes of the first few segments are rounded, becoming flatter in shape in later segments. Pre-setal lobes are low and rounded. Branchiae are present on all segments from setiger i. They are fused with the post-setal notopodial lobes for most of their length and are slightly longer than the lobes. Commencing between setigers 18 to 20, accessory branchiae appear on the posterior side of the notopodia. Each is a palmate group of 6 to 8 lobes, each lobe containing a vascular loop (fig. 11. c). Apart from the first setiger, which has a bundle of long fine capillaries which projects forward over the head region, the notosetae are broad- winged and narrow- winged capillaries, the two types being of similar length. The neurosetae of the anterior segments are similar to the notosetae except that the narrow-winged capillaries are longer than the broad-winged. Between setigers 24 to 28, the broad- winged capillaries are replaced by very finely pointed setae and 4 or 5 unidentate hooded hooks appear (fig. n. D). In all neuropodia, there is an inferior group of 4 or 5 sabre-like setae. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 167 D. mar or oi is close to the type species D. uncinata Hartman (1951) from Florida but differs from it in that the post-setal notopodial lobes of setigers I and 2 are much enlarged whilst that of setiger 3 is unmodified. A further difference is that the accessory branchiae start between setigers 18 to 20 not between setigers 24 to 28 and also there are minor variations in the form of the head region. In other details the specimens from the Solomon Islands resemble those from Florida. The central American species D. remanei and D. schusterae, described by Friedrich (1956), both differ in having digitate neuropodial, as well as notopodial, lobes in the anterior segments. In the fourth species, D. magna (Day, 1955) the accessory branchiae take the form of minute lamellae, not lobes. HABITAT. Clean sand at LWM. RECORDS. Komimbo Bay - i (holotype) ; Graham Pt. - 3. British Museum (Natural History) Registration No. Holotype 1970-53 Paratypes 1970-54 FIG. n. Dispio maroroi n.sp. (A) Dorsal view of head region. (B-C) Posterior views of parapodia from setiger i (setae omitted) and setiger 40. (D) Neuropodial hook. Laonice cirrata: Fauvel, 1927 fig. 18.6. h-k. Laonice cirrata (Sars, 1851) : 38, fig. 12. a-e; 1953 : 315, i HABITAT. Mud at n m depth. RECORD. ML 195 - i. DISTRIBUTION. Cosmopolitan. j. 165. a-e; Day, 1967 : 480, 168 P. E. GIBBS Malacoceros indicus (Fauvel, 1928) Scolelepis indica Fauvel, 1928 : 93, fig. 2. g-m; 1953 : 313, fig. 165. g-m. Malacoceros indicus: Pettibone, I9&3a : 99 (synonymy); Day, 1967 : 477, fig. 18.5. p-u. HABITAT. Silty mud and sand about MTL. RECORDS. Nggela Is. - 2 ; Tetel Is. - i ; Fintry Pt. - 9. NOTES. Specimens have 10 to 12 bidentate hooks in the neuropodia; in specimens from India there are less than 6. DISTRIBUTION. Indo-west-Pacific. Nerinides sp. cf. gilchristi Day, 1961 Nerinides gilchristi Day, 1961 : 491, fig. 5. a-d; 1967 : 485, fig. 18.7. i-1. HABITAT. Silty sand (Thalassia flat). RECORD. Komimbo Bay - i. NOTES. The specimen is in two parts - an anterior fragment of 15 setigers and a middle body section of 13 setigers. In the latter, the branchiae are flag-shaped, corresponding to those of N. gilchristi. However there are 7 or 8 hooded hooks per neuropodium, each with a single tooth above the main fang, not 10 to 12 hooks having three teeth above the main fang, as in N. gilchristi. Polydorella novaegeorgiae n. sp. (Fig. 12. A-F) DESCRIPTION. All five specimens are incomplete. The largest fragment, chosen for the holotype, measures 15 mm for 50 setigers and has a width of i-o to 1-5 mm. The colour is whitish except for a brownish pigmentation on the peristomium and anterior segments. The prostomium has a rounded anterior margin and extends back as a low ridge to the middle of setiger 2. On its dorsal surface there are two pairs of eyes and a small occipital papilla (fig. 12. A). The broad peristomium carries a pair of stout palps which reach to about setiger 15. On the anterior segments, the notopodial lobes gradually increase in size and are largest on setiger 4. The neuropodial lobes of setigers i to 6 are similar in size and are semi-circular in outline; from setiger 7 they are small and inconspicuous. Branchiae commence on setiger 6 and continue to setigers 15 to 18 (i.e. there are 10 to 13 pairs). These are cirriform in shape, the longest being equal to the body width. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 169 Both notosetae and neurosetae in the anterior segments, with the exception of the notosetae of setiger 4, are winged capillaries. The notopodial bundles are composed of two rows of curved capillaries which have narrow blades on one side (fig. 12. c), plus a superior group of similar form but much longer. The neurosetae are narrow- winged capillaries, each finely tapering to a sharp point. As is characteristic of the genus, the notopodium of setiger 4 carries modified setae. Two types are present in a double row that follows a wide arc (fig. 12. B) ; those of the anterior row are strongly angled at their distal end with a broad blade showing fine striations (fig. 12. D) while those of the posterior row are stout hooks with bluntly tapering, slightly curved tips (fig. 12. E). There are between 20 and 25 pairs of the two types of modified setae, plus a superior group of about 15 narrow- winged capillaries, in each of the notopodia of setiger 4. In the post-branchial region the superior capillary group is replaced by a group of about 10 needle-like setae. Bidentate hooded hooks (fig. 12. F) commence at setiger 7 and number between 18 and 20 per neuropodium. The type species Polydorella prolifera Augener was described from Sharks Bay, Western Australia, (Augener, 1914) and has been recorded from India (Gravely, FIG. 12. Polydorella novaegeorgiae n.sp. (A) Dorsal view of anterior region. (B) Lateral view of setiger 4. (c) Notopodial capillary. (D-E) Modified notopodial setae from setiger 4. (F) Neuropodial hook. iyo P. E. GIBBS 1927; Fauvel, 1930). It differs from P. novaegeorgiae in many respects, particularly in the form of the prostomium, the structure of the modified setae of setiger 4 and in the number of branchiae. A further point of difference is that the specimens from Marovo Lagoon do not show any sign of reproduction by scissiparity, a feature observed in P. prolifera. HABITAT. Mud at n m depth. RECORDS. ML 39-5. British Museum (Natural History) Registration No. Holotype 1970-55 Paratypes 1970-56 Prionospio cirri/era Wire"n, 1883 Prionospio cirrifera : Fauvel, 1927 : 62, fig. 2i.k-n; 1953 : 324, fig. 164. k-m; Day, 1967 : 486, fig. 18.8. a-d. HABITAT. Mud at 22 m depth. RECORD. ML 29-1. NOTES. Although P. cirrifera has not been recorded previously from the west Pacific region the single specimen agrees in detail. It has 12 pairs of branchiae and the hooded crotchets are multidentate, corresponding to the northern form (cf. Day, 1967). DISTRIBUTION. North Atlantic; North Pacific; India; South Africa. Prionospio ehlersi Fauvel, 1928 Prionospio ehlersi Fauvel, ig28a :'io, fig. i. a-r; Day, 1967 : 490, fig. 18.9. d-f. HABITAT. Mud and sand, 2-22 m depth. RECORDS. ML 37 - 2 ; ML 41 - 4 ; ML 134 - 1 ; ML 156- 8 ; ML 191 - 1 ; ML 194 -2 ; ML 195-1; ML 218 -6. NOTE. This is the first record of P. ehlersi from the Pacific region. DISTRIBUTION. Morocco; East Africa. Prionospio malmgreni Claparede, 1870 Prionospio malmgreni: Fauvel, 1927 : 61, fig. 21. a-e; Hartman & Imajima, 1964 : 285; Day, 1967 : 492, fig. 18.9. a-c. HABITAT. Silty sand at 2 m depth. RECORDS. ML 196 - 2. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 171 NOTES. Both specimens are small, about 10 mm long. Across setiger 7 there is a membraneous ridge and this feature separates P. malmgreni from the closely allied species P. steenstrupi Malmgren. DISTRIBUTION. Atlantic; Mediterranean; South Africa; South-west Australia; Japan; southern California. Prionospio pinnata Ehlers, 1901 Prionospio pinnata : Fauvel, 1953 : 323, fig. 174. e; Imajima & Hartman, 1964 : 286; Day, 1967 : 488, fig. 18.8. i-1. HABITAT. Mud and silty sand, 2-26 m depth RECORDS. ML 37-10; ML 40-5; ML 41 -27;. ML no -4; ML 156- 2; ML 157 - 2 ; ML 191 - i ; ML 194 - 2 ; ML 195 - i. DISTRIBUTION. Cosmopolitan. Prionospio steenstrupi malayensis Caullery, 1914 Prionospio steenstrupi malayensis: Caullery, 1944 : 14, fig. 8. a-f. HABITAT. A wide variety of deposits from mud to coarse sand, 2-24 m depth. RECORDS. ML 55 - 2 ; ML 68 - i ; ML 188 - i ; ML 192 - i ; ML 196 - 5 ; ML 204 - i; ML 230- i. NOTES. Caullery recognized the subspecies malayensis on the grounds of geo- graphical separation from the stem species which was then (1914) known only from the North Atlantic. In the Solomon Islands specimens there are low membraneous ridges across the dorsum from setiger 12 to setiger 16 or 17. These ridges are not present in the stem species and thus this feature distinguishes the two forms. DISTRIBUTION. East Indies. Prionospio tetelensis n. sp. (Fig. 13. A-D) DESCRIPTION. All specimens are incomplete. The holotype from ML 188 is 14 mm long for 42 segments and has a diameter of 2 to 3 mm. One of the paratypes (from ML 68) is a mature female containing oocytes which are turquoise blue in colour. The prostomium is rounded anteriorly and extends back to setiger 3 as an elevated keel between peristomial folds (fig. 13. B). There are three pairs of prostomial I 7 2 P. E. GIBBS eyes, two pairs of which are small and situated to the anterior of a larger, transverse pair. On either side of the prostomium, the peristomium is extended to form lateral wing-like expansions. The first setiger is small and lacks notosetae. The parapodial lobes of the anterior segments are large and ear-shaped, the pre-setal ones being smaller than the post- setal (fig. 13. c). These lobes gradually decrease in size, becoming flatter and less rounded in the middle body. From setiger 6 to between setigers 20 to 26 the post- setal notopodial lobes are joined across the dorsum by membraneous ridges. In mature specimens there are no genital pockets between the anterior neuropodia. Branchiae are present on setigers 2 to 5 and all are pinnate (fig. 13. A). Each has a short stem and numerous pinnules arising from the lateral and posterior surfaces of the main axis. The size of the branchiae decreases from the first to the fourth pair. Both notosetae and neurosetae in the anterior segments are narrow-winged capil- laries. Commencing between setigers 20 and 22, about 12 hooks appear in the neuropodia, accompanied by very fine pointed setae and also 2 or 3 sabre-like setae. Hooks do not appear in the notopodia until about setiger 50. Each hook is hooded with a series of five teeth above the main fang (fig. 13. D). FIG. 13. Prionospio tetelensis n.sp. (A-B) Lateral and dorsal views of anterior region, (c) Parapodium of setiger 15. (D) Neuropodial hook. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 173 Of the many species of the genus Prionospio now known, three are similar to P. tetelensis in possessing four pairs of pinnate branchiae on setigers 2 to 5. These are P. treadwelli Hartman, P. tennis (Verrill) - both from the Atlantic coast of North America - and P. peruana Hartmann-Schroder from Peru. P. tetelensis may be distinguished from all three species on the basis of a combination of characters, namely, the prostomial keel between peristomial folds extending to setiger 3, the lateral wing-like expansions of the peristomium, the membraneous ridges across the dorsum of setigers 6 to 20 and the neuropodial hooks being present from setiger 20. HABITAT. Mud from LWM to 18 m depth. RECORDS. Tetel Is. - i ; ML 68 - i ; ML 188 - i (holotype) ; ML 195 - i ; ML 228 - 1. British Museum (Natural History) Registration No. Holotype 1970-57 Paratypes 1970-58-61 Pseudopolydora corallicola Woodwick, 1964 Pseudopolydora corallicola Woodwick, 1964 : 151, fig. 2. 9-12. HABITAT. Coralline mud at LWM ; silty sand at 2 m depth. RECORDS. Matiu Is. - i ; ML 196 - i. NOTES. Both specimens are small (under 5 mm long) and are damaged. Those characters that can be checked, such as the prostomial ridge extending to setiger 6, the modified setae of setiger 5 and the peculiar fenestrated neuropodial hooks, all correspond. DISTRIBUTION. Marshall Islands. Pseudopolydora sp. HABITAT. In brackish water (5-6 % ) - boring in sponge. RECORDS. Lagoon at the mouth of the Lunga River at Lunga Point - numerous specimens. NOTES. These specimens are up to 5 mm in length. The modified setae of setiger 5 include an anterior row of broad-winged, sharply tapering setae and a posterior row of stout hooks with recurved tips: there are 6 or 7 pairs of the two types. Branchiae commence on setiger 6 and extend to setigers 16 or 17 (n or 12 pairs). Neuropodial hooks are present from setiger 8. In the posterior notosetae there are one or two stout, curved hooks which arch over the dorsum. Mr. W. J. Light has examined this series and, in a personal communication, he 174 P. E. GIBBS has pointed out that certain characters, in particular the form of the modified setae on setiger 5 and also the presence of specialized posterior notosetae, indicate that these specimens represent a new species of Pseudopolydora. He has kindly consented to publish a description in a separate paper. Scolelepis squamata mendanai n. subsp. DESCRIPTION. The holotype is a complete specimen measuring 50 mm in length for about 200 segments. The diameter of the body is between i-o to 1-5 mm. The palps are very small and slender extending only to setiger 3 or 4. There are four eyes set in a transverse row across the prostomium. Branchiae commence on setiger 2 and are fused to the notopodial lamellae for about one-third of their length. Bidentate hooks number 9 or 10 in the neuropodia from about setiger 45, and I to 3 in the notopodia starting between setigers 90 to 100. The post-setal neuropodial lobes are ear-shaped in anterior segments but become bilobed between setigers 35 to 45 and are distinctly divided in the middle segments. The subspecies mendanai is distinct from the stem species (Fauvel, 1927 : 36, fig. ii. g-n, as Nerine cirratulus) in the following characters: (i) the palps are very small reaching only to setiger 3 (not setiger 24), (ii) neuropodial hooks are present from setiger 45 (not setiger 40) and (iii) notopodial hooks are present from about setiger 90 (not setiger 60). The subspecies saipanensis (Hartman, 19540 : 230, fig. 2. a-e, as Nerine cirratulus saipanensis) differs in that the hooks appear in the neuro- podia from setigers 29 to 31 and in the notopodia from setiger 41. HABITAT. Silty sand, MTL to LWM. RECORDS. Graham Pt. - 5 ; Fintry Pt. - 6 (including holotype). British Museum (Natural History) Registration No. Holotype 1970-62 Paratypes 1970-63-65 Spio filicornis (Muller, 1776) Spiofilicornis: Fauvel, 1927 : 43, fig. 15. a-g; Imajima & Hartman, 1964 : 289; Day, 1967 : 481, fig. 18.6. l-o. HABITAT. Coralline mud at LWM. RECORDS. Matiu Is. - 8. DISTRIBUTION. North Atlantic ; South Africa ; North Pacific. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 175 Family MAGELONIDAE M agelona japonica Okuda, 1937 Magelona japonica Okuda, 1937 : 247, figs 23-24; Imajima & Hartman, 1964 : 290; Tampi & Rangarajan, 1964 : 113, figs 44-49. HABITAT. Coarse sand below LWM. RECORDS. Tetel Is. - 2. DISTRIBUTION. Bay of Bengal; North Pacific. Magelona sp. HABITAT. Silty sand at 2 m depth. RECORD. ML 283 - i. NOTES. The specimen is an anterior fragment of 20 segments. The prostomium is elongated with a rounded anterior margin lacking frontal horns. Anterior segments have large notopodial and small neuropodial lamellae. The setae of segment 9 are unspecialized. From setiger 10 the parapodial lamellae are rhomboidal. The abdominal hooded hooks are bidentate with a single tooth above the main fang. The specimen is close to M. capensis Day, differing in the shape of the abdominal lamellae being rhomboidal not oval and in the hooks being bidentate not tridentate. Family TROCHOCHAETIDAE Poecilochaetus serpens honiarae n. subsp. DESCRIPTION. All of the specimens are incomplete; the largest specimen (the holotype) is 20 mm long with 44 segments and has a body width of 2-0 mm. The characters are those of the stem species (Allen, 1904 : 79, pi. 7-12, text-fig, i) except that the aristate spines, with knobbed ends and hairy terminal aristae (Allen, 1904 : pi. 9, fig. 18) commence between setigers 20 to 25 and thus are not confined to the posterior region beyond setiger 80, as in the stem species. HABITAT. Silty and coarse sand, MTL to LWM. RECORDS. Tetel Is. - 3 (including holotype) ; Komimbo Bay - 2. British Museum (Natural History) Registration No. Holotype 1970-66 Paratypes 1970-67-69 NOTES. The Solomon Islands specimens have a reddish, chitinous, triangular plate on the dorsum of setiger 9 (a similar, but diamond-shaped, structure has been 176 P. E. GIBBS noted in P. johnsoni by Hartman, 1939). Lateral sense organs are missing from setigers 6 to 9 and the branchiae, composed of two filaments on the posterior sides of the parapodia, are present from setigers 17 or 18. An examination of P. serpens individuals from the type locality at Plymouth reveals that Allen overlooked the dorsal plate on setiger 9 and also the absence of lateral sense organs on setigers 6 to 9. Allen states that there are two pairs of branchial filaments from setiger 21 but in the several specimens which have been examined there is only one pair, although a third filament sometimes occurs after setiger 32. Thus adult specimens of the stem species P. serpens from the type locality and adults of the subspecies honiarae from the Solomon Islands are very similar, the distinguishing feature being the presence of aristate spines in the middle body seg- ments of the latter. This distinction is recognized as a minor one, deserving of sub- specific separation only. P. serpens is remarkable in its retention of the pelagic habit until a late stage of larval development. Thus it is not surprising that the existence of this species in the Indo-west Pacific region was known from plankton records long before adult speci- mens were discovered in the region. Pelagic stages have been described from Indo- China (Fauvel, 1939) and India (Banse, 1959; Ganapati & Radhakrishna, 1958). Only recently has an adult specimen been discovered in Indian waters (Achari, 1968). Poecilochaetus tropicus Okuda, 1935 Poecilochaetus tropicus Okuda, 1935 : 289, figs 1-2; I937a : 294, figs 39-40. HABITAT. Silty and coarse sand from MTL to LWM. RECORDS. Tetel Is. - 5; Graham Pt. - i. NOTES. P. tropicus was described from an incomplete specimen of 39 segments taken in the Palau Islands in 1934. No further material appears to have been recorded since that date. All of the Solomon Islands specimens are incomplete. The most complete individual is immature, measuring 26 mm long for 70 setigers, but the largest specimen appears mature and has a length of 30 mm for 50 setigers. The original description can be supplemented with the following details - (i) the two branchial filaments situated on the posterior sides of the parapodia are not present in small specimens but are conspicuous in mature individuals; (ii) on the dorsal surface of setiger 9, there is a small, yellowish, semi-lunar-shaped plate (a similar structure to that in P. serpens)', (iii) the flask-shaped parapoch'al lobes of setigers 7 to 13 contain an iridescent, light blue material in mature specimens, (iv) the spines with hairy terminal filaments (Okuda, 1935, fig. 2.e) are not replaced by the knobbed, aristate type (as in P. serpens) in the region anterior to setiger 70 in the most complete specimen available. DISTRIBUTION. Palau Islands. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 177 Family CHAETOPTERIDAE Chaetopterus variopedatus (Renier, 1804) Chaetopterusvariopedatus: Fauvel, 1927 : 77, fig. 26. a-n; 1953 : 337, fig. 175. a-n; Day, 1967 : 529, fig. 22.2. a-g. HABITAT. Attached to Acropora on wharf piles; in sand at 2 m depth. RECORDS. Yandina - 5 ; ML 118-2. NOTE. All of the specimens are small, the largest being only 20 mm long. DISTRIBUTION. Cosmopolitan. Mesochaetopterus Sagittarius (Claparede, 1870) Mesochaetopterus minutus Potts, 1914 : 963, pi. 2, fig. 4, pi. 3, figs 7-8, text-figs 4-5; Fauvel, 1953 : 342, fig- i? 8 - a; Da Y. J 96? : 53L fi g- 22.2. h-n. Mesochaetopterus Sagittarius: Bhaud, 1969 : 325, fig. i. a-f. HABITAT. A wide variety of deposits from coralline mud to coarse sand, MTL to LWM ; in Halichondria at 5 m depth. RECORDS. Tetel Is. - 25 ; Komimbo Bay - 22 ; Matiu Is. - i ; Maraunibina Is. - 2 ; Graham Pt. - i ; Pigeon Is. - num. ; Fintry Pt. - 8 ; Yandina - num. NOTES. The type specimens measure 25 mm long with a diameter of i mm (Potts, 1914) but Monro (1931) records specimens from N.E. Australia that are twice this size (50 x 2 mm) with tubes up to 20 cm in length. Some of the specimens from Tetel Is. and Komimbo Bay, and all of those from Pigeon Is. and Yandina are similar in size to the type material but the remaining specimens are larger and approximate the size of the Barrier Reef specimens. DISTRIBUTION. Mediterranean ; Indo-west-Pacific to Japan. Phyllochaetopterus elioti Crossland, 1903 Phyllochaetopterus elioti Crossland, 1903 : 172, pi. 16, figs 1-4, 7-8, pi. 17, figs 10-13; Fauvel, 1953 : 34. fi g- 177- e - h : Da Y. 1967 : 525. fi g- 22.1. f-g. HABITAT. Abundant in silty sand, MTL to LWM ; coarse sand at 4 m depth. RECORDS. Tetel Is. - num. ; Fintry Pt. - num. ; ML 295 - i. DISTRIBUTION. South and East Africa; India. 178 P. E. GIBBS Phyllochaetopterus herdmani (Hornell, 1903) Phyllochaetopterus herdmani: Willey, 1905; 292, pi. 5, figs 127-132; Fauvel, 1953 : 342, fig. 177. i-m; Day, 1967 : 524, fig. 22.1. a-e. HABITAT. Silty sand at MTL. RECORD. Tetel Is. - i. NOTE. The single specimen is rather damaged and in a poor state of preservation but nevertheless corresponds to the species description. It is anterior fragment of 31 setigers comprising n anterior, 2 middle and 18 abdominal segments. On setiger 4 there are 9 modified setae in each of the notopodia. This is a first record for the Pacific region. DISTRIBUTION. East Africa; Ceylon. Phyllochaetopterus socialis Claparede, 1870 Phyllochaetopterus socialis : Fauvel, 1927 : 84, fig. 30. a-1; 1953 : 339, fig. 176. a-1; Day, 1967 : 525, fig. 22.1. h-r. HABITAT. Very abundant on moderately exposed reef platforms, forming dense colonies towards LWM (see Gibbs, 1969, fig. 136); single specimens embedded in Milkpora and the sponge Neofolitispa dianchora (de Laubenfels) from 5 m depth. RECORDS. Matiu Is., Cape Esperance and Batuona Is. - numerous specimens; Maramasike Pg. - 3; Kokomtambu Is. - i ; Yandina - i. DISTRIBUTION. Mediterranean; Atlantic; Indo-Pacific. Spiochaetopterus costarum costarum (Claparede, 1868) Telepsavus vitrarius Ehlers, 1908 : 114, pi. 15, figs 1-8. Spiochaetopterus vitrarius: Day, 1967 : 528, fig. 22.1. u-v. Spiochaetopterus costarum costarum: Gitay, 1969 : 14 (synonymy). HABITAT. Silty sand (Thalassia flat) at about MTL ; coarse sand at LWM. RECORDS. Tetel Is. - 6 ; Komimbo Bay - 14. NOTES. The specimens have a rounded prostomium with a pair of lateral eyes. The anterior region is composed of 9 setigers, the notopodia of setiger 4 bearing single modified setae with swollen, triangular or heart-shaped tips. On the ventral surface of setigers 7 to 9 the tissue is distinctly glandular, being brownish-black in colour on setiger 7 but whitish on setigers 8 and 9. On setiger 2 there is usually a thin line of brownish pigment across the ventrum. Up to 19 middle and 25 ab- THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 179 dominal segments have been noted in several specimens but most of the material is poorly preserved. The largest specimens measure about 25 mm in length, their tubes being up to 60 mm long and 0-5 to i-o mm in diameter. The latter are trans- parent and highly wrinkled. Gitay (1969) has recognized three subspecies of 5. costarum in the Pacific region, namely pottsi, monroi and okudai. The specimens from the Solomon Islands differ from all three in having fewer middle segments (i.e. 19 compared to 30-90, about 50 and about 67 respectively). Furthermore their small size distinguishes them from pottsi and the presence of eyes separates them from monroi and okudai. However these specimens appear to be identical with T. vitrarius Ehlers, known from the eastern Atlantic and Natal, which Gitay considers to be a synonym of S. costarum costarum. DISTRIBUTION. Eastern Atlantic; Mediterranean; Indian Ocean. Family GIRRATULIDAE Cirriformia filigera (Delle Chiaje, 1825) Audouinia filigera: Fauvel, 1927 : 92, fig. 32. h-m; 1953 : 331, fig. 173. h-1. Cirriformia filigera Day, 1967 : 518, fig. 20.4. p-q. HABITAT. In Acropora rubble and under coral boulders on reef platforms; in crevices and vacated borings in Porites, Acropora and beachrock. RECORDS. Kokomtambu Is. - i ; Tetel Is. - 3 ; Komimbo Bay - 3 ; Matiu Is. - i ; Paleki Is. - 2; Lauvie Is. - 2. DISTRIBUTION. Atlantic; Mediterranean; Indian Ocean. Cirriformia punctata (Grube, 1859) Audouinia semicincta: Fauvel, 1953 : 330 fig. 174. c; Okuda, 1937 : 2 96, fig. 41. a-c. Cirriformia punctata: Day, 1967: 517, fig. 20.4. j-m. HABITAT. In sedimented crevices on reef platform. RECORDS. Komimbo Bay - i ; Batuona Is. - 54. DISTRIBUTION. Circumtropical. Dodecaceria fistulicola Ehlers, 1901 Dodecaceria fistulicola : Fauvel, 1953 : 335, figs 169. h-i, 174. a-b; Okuda, 1937 : 2 98, fig. 42. a-f. HABITAT. Crevices in reef platform. RECORDS. Komimbo Bay - i ; Matiu Is. - i. 180 P. E. GIBBS NOTES. A complete specimen has 68 segments and is about 15 mm long. There are 4 or 5 pairs of branchiae which are shorter than the palps. The first 7 or 8 setigers carry capillary setae which are replaced in later segments by 5 or 6 hooks in both rami. DISTRIBUTION. Indo-west-Pacific ; southern South America. Dodecaceria laddi Hartman, 1954 Dodecaceria laddi Hartman, 1954 : 638, n 8 s I 7^- c > J 77- d-h; Day, 1967 : 502, fig. 20.1. g-i. HABITAT. Boring (?) in Forties. RECORD. Kokomtambu Is. - i. DISTRIBUTION. Marshall Islands; South Africa. Tharyx sp. HABITAT. Silty sand at 36 m depth. RECORD. Off Fintry Pt. - i. NOTES. The specimen is incomplete with 26 segments and measures 3-5 mm long. The diameter is about 0-4 mm. The palps have been lost but scars indicate their position. The setae are entirely capillary. It is impossible to identify this fragment with any certainty but possibly it is T. multifilis Moore, which is known from Madras (Fauvel, 1953). Family GOSSURIDAE Cossura coasta Kitamori, 1960 Cossura coasta Kitamori, 1960 : 1082, fig. i. a-f; Imajima & Hartman, 1964 : 299; Day, 1967 : 581, fig. 26.1. a-d. HABITAT. Mud at 22 m depth. RECORD. ML 37 - 2. NOTES. Both specimens are incomplete; the larger measures 10 mm for 60 segments and has a diameter of 0-5 mm. They differ from the species description only in respect of the shorter capillary setae which, instead of being serrated, are smooth, and also taper quite abruptly about halfway along their length to a very slender filament. DISTRIBUTION. Southern Africa; Japan. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 181 Family FLABELLIGERIDAE Diplocirrus glaucus orientalis n. subsp. DESCRIPTION. The specimen chosen for the holotype (from ML 194) is 18 mm long for 25 segments and has a maximum diameter of about 2-0 mm in the anterior body region. A complete paratype (from ML 55) is 20 mm in length for 40 segments. The characters are those of the stem species Diplocirrus glaucus (Malmgren), (Fauvel, 1927 : 120, fig. 43. a-d) but is distinguished by the presence of conspicuous orange coloured, globular papillae situated on the ventral surface below each neuropodium from setiger 4 to setigers 14 or 16. HABITAT. Mud and silty sand, n to 24 m depth. RECORDS. ML 55 - i ; ML 188 - 3 ; ML 194 - i (holotype) ; ML 218 - i ; ML 230 - 1. British Museum (Natural History) Registration No. Holotype 1970-70 Paratypes 1970-71-74 NOTES. The stem species is widely distributed in the North Atlantic region and, although Fauvel (1932) refers a specimen dredged in the Mergui Archipelago from 7 m (4 fm) to this species 'with great hesitation', no certain record of this species being taken in the Indian Ocean exists. Specimens of the stem species from Plymouth do not possess conspicuous papillae below the neuropodia of the anterior segments. The presence of these papillae thus distinguishes the subspecies orientalis. Family SGALIBREGMIDAE Hyboscolex longiseta Schmarda, 1861 Hyboscolex longiseta Schmarda, 1861 : 54, pi. 27, fig. 211, with text-figs; Day, 1967 : 588, fig. 27.2. a-d. HABITAT. Under coral boulders in muddy silt ; in beachrock. RECORDS. Tetel Is. - i ; Maraunibina Is. - i ; Lauvie Is. - 2. DISTRIBUTION. Southern and East Africa; New Zealand (Auckland Is.). Scalibregma inflatum Rathke, 1843 Scalibregma inflatum: Fauvel, 1927 : 123, fig. 44. a-f; 1953 : 355, fig. 185. a-f; Day, 1967 : 590, fig. 27.2. e-i. HABITAT. Silty mud at 13 m depth. RECORD. ML 69-1. DISTRIBUTION. Cosmopolitan (but few records from the Indo-Pacific region). i8a P. E. GIBBS Family OPHELIIDAE Armandia lanceolata Willey, 1905 Armandia lanceolata Willey, 1905 : 288, pi. 5, fig. 120; Fauvel, 1953 : 358. HABITAT. Acropora rubble at LWM; silt and sand, 5-24 m depth. RECORDS. Tetel Is. -i; ML 56-1; ML 117 - i; ML 134 - i; ML 229 - i; ML 230 - 1. DISTRIBUTION. Indo-west-Pacific. Armandia leptocirrus (Grube, 1878) Ophelina (Armandia) leptocirrus Grube, 1878 : 194. Armandia leptocirrus: Fauvel, 1953 : 358; Day, 1967 : 577, fig. 25.2. h. HABITAT. Silt and coralline mud at LWM ; mud and sand, 2-18 m depth. RECORDS. Komimbo Bay - i ; Matiu Is. - 7 ; ML 68 - 2 ; ML 97 - i ; ML 118 - i ML 190 - 2 ; ML 192 - i ; ML 196 - 3 ; ML 283 - 4. DISTRIBUTION. Tropical Indo-west-Pacific. Armandia longicaudata (Caullery, 1944) Ammotrypane longicaudata Caullery, 1944 : 44, fig. 35. a-c. Armandia longicaudata: Day, 1967 : 577, fig. 25.2. a-c. HABITAT. Silty sand at 24 m depth. RECORD. ML 230 - i. DISTRIBUTION. East Africa; East Indies. Ophelia koloana n. sp. (Fig. 14. A-B) DESCRIPTION. The two type specimens measure 10 to 12 mm in length and have a diameter between 1-0-1-5 mm. The paratype is a female approaching maturity, containing coelomic oocytes. The prostomium is sharply pointed. The anterior region is cylindrical with the ventral groove commencing at setiger 8. The first 9 setigers are abranchiate, THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 183 branchiae being present from setiger 10 to setiger 27 (i.e. there are 18 pairs). Each branchia is rather small and has a 'crimped' appearance (fig. 14. A). The branchi- ferous region is followed by 4 abranchiate segments and then two achaetous annuli (or pre-anal segments) . Thus, following the scheme of Tebble (1953) , the body formula is ga + i8b ( ) + 4a + 2n = 33. From setiger 30 to the pygidium there is a pair of prominent dorso-lateral ridges (fig. 14. B). The pygidium bears two stout ventral papillae and 9 small dorsal ones. Neither nephridiopores nor branchial fenestrations in the lateral body wall could be detected. In terms of its affinities, 0. koloana has a similar body formula to 0. denticulata Verrill and 0. capensis Kirkegaard. However in 0. denticulata, which is an Atlantic species, the ventral groove starts at segment 10 and it has n to 18 dorsal anal papillae (Fauvel, 1927 : 132, fig. 46, g-h, as 0. neglecta, fide Tebble, 1953). 0. capensis from South Africa differs in that it has lateral swellings from segment 26 to the pygidium (Kirkegaard, 1959 : 45, fig. 8) not dorso-lateral ridges from setiger 29. HABITAT. Sand at 2 m depth. RECORDS. ML 118-2. British Museum (Natural History) Registration No. Holotype 1970-75 Paratype 1970-76 NOTE. Hitherto the genus Ophelia appears to have been recorded only once in the tropical Indo-west-Pacific region, namely, a single specimen of 0. limacina from Indo-China (Fauvel, 1939). 0-5mm 0-5mm FIG. 14. Ophelia koloana n.sp. (A) Lateral view of segments 22 to 24. (B) Dorso-lateral view of posterior region. Polyophthalmus pictus (Dujardin, 1839) Polyopht halmus pictus : Fauvel, 1927 : 137, fig. 48. l-o; 1953 : 3^> & 1 ^7- l-o; Day, 1967 : 579, fig. 25.2. k-m. HABITAT. Interstices of the sponge Halichondria at 5 m depth. RECORDS. Yandina - 3. 184 P. E. GIBBS NOTES. All three specimens appear to be juvenile in that they measure only 3 to 7 mm in length. Pillai (1965) found this species in a similar habitat, namely, within sponges and other encrusting organisms on bamboo oyster spat collectors. DISTRIBUTION. Cosmopolitan. Family STERNASPIDAE Sternaspis scutata (Renier, 1807) Sternaspis scutata: Fauvel, 1927 : 216, fig. 76. a-g; 1953 : 401, fig. 210. a-g; Day, 1967 : 648, fig. 31.1. a-d. HABITAT. Mud and silty sand, 18-24 m depth. RECORDS. ML 218 - 6 ; ML 230 - 3. DISTRIBUTION. Cosmopolitan. Family CAPITELLIDAE Capitellethus dispar (Ehlers, 1907) Capitellethus dispar: Fauvel, 1953 : 37*^ Rullier, 1965 : 194. HABITAT. Silty sand above LWM. RECORDS. Komimbo Bay - 3. NOTES. The material is fragmentary and the largest specimen measures 18 mm long for 60 segments. The'peristomium is achaetous and there are n thoracic setigers with capillary setae in both rami, which are replaced by hooks from setiger 12. No branchiae could be seen. In all three specimens the epidermal cells of setigers n and 12 (the last thoracic and first abdominal) contain a dark pigment. DISTRIBUTION. India; West Pacific. Capitobranchus sp. HABITAT. Coarse sand at LWM. RECORD. Tetel Is. - i. NOTES. The single specimen is incomplete, measuring 20 mm for 20 segments, and has a diameter of about 2 mm. The peristomium is biannulate, segments 2 to 4 are triannulate, segments 5 to 8 are quadriannulate and the remaining segments are THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 185 biannulate. Segments 2 and 3 are achaetous but may have lost their setae. Seg- ments 4 to 12 have capillaries in both rami which are replaced by hooks in the neuropodia from segment 13. In having at least 19 thoracic segments and hooks from setiger 13 (assuming segments 2 and 3 to have been setigerous), the specimen falls within the broad definition of the genus Capitobranchus given by Day (1962, p. 651) as follows: "Thorax with an achaetous peristome followed by about 19 setigerous segments most of which bear capillary setae in both rami, but hooded hooks are present in the last few neuropodia." The genus is monospecinc based on C. macgregori from Madagascar which has 19 thoracic setigers, the last four of which bear neuropodial hooks. Due to its incomplete nature, the specimen from Tetel Island must remain indeterminable as to species until further material becomes available. Dasybranchus caducus (Grube, 1846) Dasybranchus caducus: Fauvel, 1927 : 148, fig. 52. a-h; 1953, 365, fig. 190. a-h; Day, 1967 : 603, fig. 28.3. e-h. HABITAT. A wide variety of deposits, mud to coarse sand, particularly under coral boulders on reef platforms, from above MTL to LWM ; mud, 9-22 m depth. RECORDS. Tetel Is. - 56; Nggela Is. (Sandfly Pg.) - 30; Naro Bay - 7; Komimbo Bay - 14; Matiu Is. - 16; Graham Pt. - 19; Fintry Pt. - 7; ML 29-2; ML 56 - I. DISTRIBUTION. Atlantic; Mediterranean; Indo-Pacific. Mastobranchus dollfusi Fauvel, 1936 Mastobranchus dollfusi Fauvel, 1936 : 81, fig. n. a-g; Kirkegaard, 1959 : 51. HABITAT. Muddy sand at MTL; mud and silty sand, 2-22 m depth. RECORDS. Nggela Is. - 4 ; ML 29 - i ; ML 68 - 5 ; ML 195 - i. NOTES. Specimens have a diameter of 0-5 to i-o mm and the largest anterior fragment is 30 mm long for 70 segments. The prostomium is conical with a pair of pigmented eye-spots and is followed by an achaetous peristomium. The first setiger has capillary notosetae only; setigers 2 to 10 have capillaries in both rami. The number of thoracic setigers varies, as noted by both Fauvel and Kirkegaard for the West African material. In the Solomon Islands specimens setiger n usually has capillary notosetae and neuropodial hooks with the succeeding segments carrying hooks in both rami. However two specimens have capillary notosetae on setiger 12, one of which also has capillary neurosetae on setiger n. A fragment of the posterior region possesses retractile branchiae situated posteriorly to the notopodia of the abdominal segments, and the pygidium has four short anal cirri. Despite the wide geographical separation of the two localities, the Solomon Islands specimens appear to be identical to those from West Africa in all details. DISTRIBUTION. West Africa. 186 P. E. GIBBS Mastobranchus trinchesii Eisig, 1887 Mastobranchus trinchesii: Fauvel, 1927 : 152, fig. 54. a-i; Kirkegaard, 1959 : 52. HABITAT. Silty sand, MTL to LWM. RECORDS. Tetel Is. - i ; Komimbo Bay - 4; Graham Pt. - 27. NOTES. Although M. trinchesii is a species hitherto known only from the Mediterranean and West Africa, the Solomon Islands specimens appear to be identical. Briefly, the latter specimens have an achaetous peristomium, followed by n thoracic setigers with capillary setae in both rami, except the first which has notosetae only. From setiger 12 the capillaries are replaced by hooks in the neuropodia, but in the notopodia capillaries persist with the hooks until about setiger 90. Retractile cirriform branchiae are present in the posterior segments and the pygidium carries four anal cirri. DISTRIBUTION. Mediterranean; West Africa. Mediomastus sp. cf. capensis Day, 1961 Mediomastus capensis Day, 1961 : 518, fig. u. a-d; 1967 : 600, fig. 28.2. n-p. HABITAT. Mud at 18 m depth. RECORD. ML 218 - i. NOTES. The specimen is an anterior fragment of 25 segments, measuring 7 mm in length. An achaetous peristomium is followed by 10 thoracic setigers, the first four of which have capillaries, the remaining six having hooks only. Although conforming to the description of the South African material, the identity of the specimen must remain provisional, due to its fragmentary condition. Notomastus sp. HABITAT. Sand, 2-9 m depth. RECORDS. ML 97 - i ; ML 118 - i. NOTES. Both specimens are anterior fragments consisting of n thoracic setigers and a few abdominal segments. Setigers i to 4 are triannulate and setigers 5 to n are quadriannulate. The thoracic segments are strongly areolated, particularly the more anterior ones. The abdominal tori are well developed. A specific identi- fication cannot be made with any certainty because of the absence of branchiferous segments. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 187 Family ARENICOLIDAE Abarenicola claparedii claparedii (Levinsen, 1883) Arenicola claparedii: Fauvel, 1927 : 163, fig. 57. k-n. Abarenicola claparedii: Wells, 1959 : 307, fig. 2. HABITAT. Coralline silty mud at LWM. RECORD. Matiu Is. - i. NOTES. The single specimen was kindly examined by Prof. G. P. Wells who identified it, from its superficial characters only, as one of the cystless species of Abarenicola, probably claparedii claparedii. This determination will have to be confirmed on the basis of its internal anatomy. DISTRIBUTION. Mediterranean. Family MALDANIDAE The following descriptions of the maldanid material are based on notes provided by Dr. Charlotte Mangum. Subfamily EUCLYMENINAE Clymenella (=Macroclymene) sp. 1 HABITAT. Silty shell gravel on Thalassia flat. RECORD. Graham Pt. - i. NOTES. The specimen is incomplete (the head and probably five anterior setigers are missing) and has 48 setigers plus a caudal funnel. The latter carries long and short cirri, which are arranged in an alternating pattern of one long, two short, one long, two short and so on, in addition to a median ventral cirrus that is 1-5 to 2-0 times the length of the long cirri. Posterior pre-anal achaetous segments are absent. Clymenella (=Macroclymene) sp. 2 HABITAT. Under boulder in muddy silt at LWM. RECORD. Komimbo Bay- i. NOTES. An anterior fragment composed of 27 setigers is available. It has a cephalic plaque with nuchal organs extending nine-tenths of its length. Prostomial pigment spots are absent. There are shallow clefts in the medial and posterior margins of the cephalic rim. Uncini are present on all setigers including the first three. i88 P. E. GIBBS Clymenella (=Euclymene) sp. HABITAT. Silty sand with coral debris on lower shore. RECORD. Komimbo Bay - i. NOTES. The specimen is complete with 19 setigers plus one or two posterior achaetous segments. A cephalic plaque is present, the rim of which has six well defined lobes along the dorsal margin. There are a few prostomial pigment spots. Setigers i to 3 each have a single large aciculum. A caudal funnel is present and this carries a median ventral cirrus that is more than 1-5 times the length of the other cirri. Questionably identified as Praxillella kollikeri (Mclntosh, 1885, as Pr axilla kollikeri). Praxillella sp. HABITAT. Silty fine coral sand at LWM. RECORD. Matiu Is. - i. NOTES. The complete specimen has 19 setigers plus two posterior achaetous segments. A cephalic plaque is developed with nuchal organs extending over nine- tenths of its length. The cephalic rim has posterior clefts only. Pigment spots on the prostomium are profuse. There are three or four uncini on setigers i and 2 and four on setiger 3. A caudal funnel is not present. The anal plug is just protruding and is surrounded by cirri of equal length. The specimen resembles P. affinis (Sars) but is probably a new species. Euclymeninae sp. A HABITAT. Muddy sand at 9 m depth. RECORD. ML 56-1. NOTES. This specimen is an anterior fragment of nine setigers. The cephalic plaque has nuchal organs extending across three-quarters of its length. Prostomial pigment spots are absent. The first setiger is not clearly separated from the prostomium. One pair of acicula is present on setiger i, two pairs on setiger 2 and one or two pairs on setiger 3, with uncini on the following segments. Euclymeninae sp. B HABITAT. Between boulders in muddy silt at MTL. RECORD. Tetel Is. - i. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 189 NOTES. This incomplete specimen is composed of the prostomium and eight setigers. The nuchal organs extend for nine-tenths of the length of the cephalic plaque and there are very shallow clefts around the medial and posterior margins of the cephalic rim. Pigment spots are present ventrally. Setiger i has one pair of acicula and setigers 2 and 3 have two pairs, the subsequent setigers having uncini. Euclymeninae sp. C HABITAT. Silty sand at 24 m depth. RECORD. ML 230-1. NOTES. The specimen is fragmentary, consisting of 15 anterior setigers. The cephalic plaque is unusual in having pigment spots within the plaque as well as on the ventral surface. The cephalic rim is very high and has posterior clefts only. Subfamily NICOMACHINAE ? Nicomache sp. HABITAT. Coarse coral sand below LWM. RECORDS. Tetel Is. - 2. NOTES. The material consists of two large anterior fragments with seven and eight setigers. They appear to be identical except that one specimen has only large setae on setigers I to 3 but the other specimen has four small setae on setiger i, a small (left) and a large (right) seta on setiger 2 and one large seta on either side of setiger 3. The latter specimen may be abnormal due to aberrant growth or re- generation. In both specimens the first three setigers are light, the rest being grey- brown to dark in colour. Family OWENIIDAE Myriochele eurystoma Caullery, 1944 (Fig. 15. A) Myriochele eurystoma Caullery, 1944 : 52, fig. 42. a-d, f. HABITAT. Silty sand at 35 m depth. RECORD. ML 72-1. NOTES. The specimen is an anterior fragment about 15 mm long and has a diameter of 0-5 mm. It has a large mouth with a prominent buccal organ on its i go P. E. GIBBS ventral margin (fig. 15. A). The prostomium and anterior segments are pigmented reddish-brown, with two eye-spots situated ventro-laterally. Between the latter, running over the dorsal surface, there is a thin unpigmented band. The tube is composed chiefly of sponge spicules cemented with their long axes around the circumference of the tube, the latter having a diameter of about 1-2 mm. The specimen is referred to M. eurystoma on account of its large mouth and its pigmentation. Caullery notes that a specimen from 32 m depth was pigmented but specimens from deeper waters (131-1570 m) lacked colour. The details of the posterior region are unknown. DISTRIBUTION. East Indies. Myriochele heruensis n. sp. (Fig. 15. B-G) DESCRIPTION. Of the fourteen specimens taken at ML 134, only three could be removed intact from their tubes. The holotype is 7-6 mm long for 18 segments and the two other complete paratypes measure 6-6 and 7-5 mm for 16 and 17 seg- ments respectively. The largest specimen probably measured between 10 and 12 mm long when intact. The diameter of the worm is between 0-28 and 0-40 mm. H G F E FIG. 15. Myriochele eurystoma. (A) Anterior region. Myriochele heruensis n.sp. (B-D) Ventral and lateral views of anterior region. (E) Dorsal view of posterior region. (F-G) Profile and face views of uncinus. Myriochele sp. (H) Ventral view of anterior region. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 191 The prostomium is short with a rounded anterior margin (fig. 15. B). In those specimens preserved with the prostomium protracted, a shallow groove can be discerned extending across the dorsal surface of the prostomium, terminating on either side at the level of ventro-lateral eye-spots (fig. 15. c). In other specimens the prostomium is contracted, and in these the dorsal groove appears as a distinct fold (fig. 15. D). This groove or fold is quite marked in all specimens and serves as the characteristic feature of the species. In addition to the two red eye-spots, two small patches of red pigment are present on the antero-dorsal surface of the prosto- mium and there is also a thin red line along the posterior margin of the dorsal groove. The first three setigers are short. From setiger 4 there is a progressive increase in the length of the segments, reaching a maximum in the middle body region, and then successive segments become shorter. The pygidium has two short, stout anal cirri (fig. 15. E). The setae are of the usual Myriochele types. Notosetae are slender capillaries with short lateral processes along either side of the blade. Neurosetae, present from setiger 4, are uncini, each with two subequal teeth at the apex (fig. 15. F-G). In the middle body segments, the tori are composed of 7 or 8 vertical rows of uncini. The tube is composed of shell fragments which are cemented with their flat surfaces at right angles to the long axis of the tube. The latter has a diameter of 0-8 to i-o mm and a maximum length of about 25 mm. As noted above the distinct groove across the dorsal surface of the prostomium is sufficient to distinguish M. heruensis from all other species. This feature may be interpreted as a feeding adaptation in that it provides a mechanism whereby the position of the mouth can be changed. HABITAT. Sand at 16 m depth. RECORDS. ML 134 - 14. British Museum (Natural History) Registration No. Holotype 1970-77 Paratypes 1970-78 Myriochele sp. (Fig. 15. H) HABITAT. Sand at 5 m depth. RECORD. ML 229 - i. NOTES. The specimen lacks posterior segments but probably measured about 12 mm long when intact. It has a diameter of 0-24 mm. The anterior margin of the prostomium is bluntly rounded and, ventrally, the mouth extends about half the prostomial length, ending at the level of two red eye-spots which are ventro-lateral in position (fig. 15. H). 192 P. E. GIBBS The tube has a diameter of 0-4 mm and consists of sand and shell fragments cemented with their long axes along the length of the tube. The specimen shows a general similarity to M. minor Caullery but differs in having eye-spots. Owenia fusiformis Delle Chiaje, 1844 Owenia fusiformis : Fauvel, 1927 : 203, fig. 71. a-f; 1953 : 39 1 ' fig- 2O 3- a ~f; Day, 1967 : 649, fig. 31.1. e-j. HABITAT. Medium and coarse sand, 2-18 m depth. RECORDS. ML 96-3; ML 118 - 3; ML 134- 5; ML 190 - 2; ML 192 - 13; ML 203 - i ; ML 204 - 60 ; ML 229 - 2 ; ML 283 - i. DISTRIBUTION. Cosmopolitan. Family SABELLARIIDAE Lygdamis ehlersi (Caullery, 1913) Tetreres ehlersi Caullery, 1913 : 201, figs a-d. Lygdamis ehlersi: Caullery, 1944 : 62, figs 49-50. HABITAT. Silty sand at LWM. RECORDS. Fintry Pt. - 5. NOTES. The largest specimen is 50 mm long for 50 segments. The tube is constructed of gravel, shell and calcareous alga fragments. The chief characters include the following: on the operculum, there are 19 or 20 external and 6 or 7 internal paleae on each side and 10 groups of buccal cirri. The median cirrus (lobe Preoral) is stout, longer than the palps, and has a truncated tip which is darkly pigmented a bluish-black colour. There are 13 to 15 pairs of branchiae. Comparing these specimens with the type description they have fewer external (20 compared to 25) and internal (6 or 7 instead of 12) paleae but correspond in all other details. Although Hartman (1959) indicates that L. ehlersi may be a synonym of L. indicus the two species appear to be distinct and separable on the form of the median cirrus. In L. ehlersi the median cirrus is stout, longer than the palps and has a truncated tip while in L. indicus this organ is shorter than the palps and tapers to a point. DISTRIBUTION. East Indies. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 193 Lygdamis indicus Kinberg, 1867 Lygdamis indicus: Johansson, 1925 : 8, fig. 2. 2-7; Fauvel, 1953 : 399, fig. 209. a-k; Day, 1967 : 677. fig- 33-3- c-h. HABITAT. Undersurface of coral boulder at LWM. RECORD. Pirikale Is. - i. NOTES. The specimen is 30 mm long (diameter = 4 mm) with 48 setigers. It has 37 external and 17 internal paleae on each side. The tube is a fragile structure constructed of shell fragments. DISTRIBUTION. Tropical Indo-west-Pacific. Family PECTINARIIDAE Pectinaria (Pectinaria) antipoda Schmarda, 1861 Pectinaria (Pectinaria) antipoda Schmarda, 1861 : 46, pi. 24, fig. 199, with text-figs; Pruvot, 1930 : 78, pi. 3, figs 93-95; Fauvel, 1953 : 403, fig. 211. e-g. HABITAT. Mud and sand, 4-22 m depth. RECORDS. ML 37 - i ; ML 203 - i ; ML 229 - i. NOTES. All three specimens are too small (less than 10 mm) to be certain of their identity but they appear to belong to this Indo-west-Pacific species. DISTRIBUTION. Persian Gulf; West Pacific. Family AMPHARETIDAE Subfamily MELINNINAE Isolda pulchella Miiller, 1858 Isolda sibogae Caullery, 1944 : 102, fig. 83. a-h. Isolda pulchella: Day, 1963 : 434 (synonymy); 1967 : 691, fig. 35.1. k-n. HABITAT. Mud and silty sand, 2-18 m depth. RECORDS. ML 56- i; ML 196- i; ML 218- i. DISTRIBUTION. Atlantic and Indian Oceans; East Indies. 194 P. E. GIBBS Subfamily AMPHARETINAE ? Sosane wireni Caullery, 1944 (Fig. 16. A-B) Sosane wireni Caullery, 1944 : 87, fig. 69. a-e. HABITAT. Silty sand at 24 m depth. RECORD. ML 230 - i. NOTES. The specimen is 7 mm long for 26 setigers of which 15 are thoracic and ii abdominal. It is referred to S. wireni on account of the branchiae being arranged with three pairs in a transverse line across setiger i and a smaller fourth pair on setiger 2. However there is some doubt as to the identity since Caullery omits any reference to the diagnostic features of the genus, namely, the presence of (i) a nephridial papilla on the branchial ridge and (ii) specialised notosetae on elevated posterior notopodia (Day, 1964). There does not appear to be a nephridial papilla present on the Solomon Islands specimen but the notopodia of setiger 13 are elevated (fig. 16. A) and each carries about 20 modified notosetae which have a 'penicillate' appearance (fig. 16. B). DISTRIBUTION. East Indies. B FIG. 16. ? Sosane wireni. (A) Elevated notopodium of setiger 13. (B) Modified notosetae from same setiger. Family TEREBELLIDAE Subfamily TRICHOBRANCHINAE Terebellides stroemi Sars, 1835 Terebellides stroemi: Fauvel, 1927 : 291, fig. 100. i-q; 1953 : 436, fig. 231. i-q; Day, 1967 : 713, fig. 36.1. f-j. HABITAT. Mud and silty sand, 2-24 m depth. RECORDS. ML 155 - 31 ; ML 157 - 3 ; ML 196 - i ; ML 218 - i ; ML 230 - 3. DISTRIBUTION. Cosmopolitan. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 195 Subfamily POLYGIRRINAE Amaeana trilobata (Sars, 1863) Amaea trilobata: Fauvel, 1927 : 285, fig. 99. a-e. Amaeana trilobata: Day 1967 : 718, fig. 36.3. e-h. HABITAT. Mud, 11-22 m depth. RECORDS. ML 29 - i ; ML 194 - i. DISTRIBUTION. North Atlantic; Mediterranean; southern Africa; Japan. Lysilla ubianensis Caullery, 1944 Lysilla ubianensis Caullery, 1944 : 197, fig. 156. a-e; Day, 1967 : 721, fig. 36.3. i-j. HABITAT. Silty mud, MTL to LWM, and at 13 m depth RECORDS. Tetel Is. - 3 ; Komimbo Bay - i ; ML 69-1. DISTRIBUTION. East Africa; East Indies. Subfamily THELEPINAE Euthelepus kinsemboensis Augener, 1918 Euthelepus kinsemboensis Augener, 1918 : 548, pi. 6, fig. 161, pi. 7, fig. 250, text-fig. 95; Fauvel, I 93 0: 553. fig- 9- a-f; 194? : 7 8 - fi g- 75- a'-d'; Day, 1967 : 726, fig. 36.5. e-i. HABITAT. Under coral boulder on reef platform. RECORD. Graham Pt. - i. NOTES. The specimen is an anterior fragment of 34 setigers which corresponds in detail to the specimen from New Caledonia described by Fauvel except that the branchial filaments, situated on segments 2, 3 and 4, number 10, 8 and 6 respectively, not 12, 8 and 4. The type specimen from Angola has only 12 branchial filaments instead of 24, but according to Fauvel (1930) this variation is attributable to the difference in the size of the specimens. DISTRIBUTION. Angola; New Caledonia. Subfamily TEREBELLINAE Eupolymnia nebulosa (Montagu, 1818) Polymnia nebulosa: Fauvel, 1927 : 257, fig. 89. a-g; 1953 : 419, fig. 219. a-g. Eupolymnia nebulosa: Imajima & Hartman, 1964 : 337; Day, 1967 : 744, fig. 36.9. f-h. HABITAT. Under coral boulder on silty sand at LWM. RECORD. Graham Pt. - i. DISTRIBUTION. Atlantic; South Africa; Mediterranean; Indo-west Pacific. ig6 P. E. GIBBS Loimia medusa (Savigny, 1820) Loimia medusa: Fauvel, 1953 : 4 J 6, fig- 218. a-f; Day, 1967 : 743, fig. 36.9. a-e, HABITAT. A wide variety of deposits, silty mud to Acropora rubble, from above MTL to LWM on reef platforms; in crevices within reef platforms and amongst encrustations on wharf piles ; silty sand, 9-24 m depth. RECORDS. Tetel Is. - 3 ; Komimbo Bay - 9 ; Mamara Pt. - i ; Matiu Is. - i ; Lauvie Is. - 6 ; Fintry Pt. - 9 ; Yandina - 2 ; Maramasike Pg. - i ; ML 69 - i ; ML 96 - i ; ML 230 - i. NOTES. The largest specimens, up to 40 cm in length with over 200 segments, were found in coral debris deposits (chiefly Acropora fragments) on reef platforms. Their tubes were loosely constructed of Halimeda, coral and shell fragments and extended to a depth of over 30 cm. Although conspicuous on account of their white feeding tentacles spread over the surface, specimens are difficult to capture in this habitat because of their ability to rapidly withdraw to the bottom of their deep tubes when disturbed. However smaller specimens which are commonly found under coral boulders lying in silty mud are easily taken. DISTRIBUTION. Cosmopolitan in temperate and tropical waters. Pista dibranchis n. sp. (Fig. 17. A-E) DESCRIPTION. A specimen from Tetel Island has been selected for the holotype. It is incomplete and measures 12 mm for 32 segments. The largest of the paratypes is 40 mm long for 130 segments. The body diameter is about i-o mm. The tentacular lobe bears numerous tentacles and is without eye-spots. Semi- circular lateral lobes are present on segments 2 and 3. A pair of stalked branchiae arises from the anterior margin of the second segment and each has numerous filaments arranged spirally, with a maximum of 6 or 7 whorls, around the central stalk (fig. 17. A) ; often one of the pair is much larger than the other. In larger specimens the nephridial papillae on segments 6 and 7 (setigers 3 and 4) are cons- picuous. Notosetae commence on segment 4 and extend to segment 20 (setiger 17). Each bundle consists of broad-winged, smooth-tipped capillaries of two types, namely, a longer stout-shafted form (fig. 17. B) and a shorter, slender form with a recurved tip (fig. 17. c). There are usually about n of each type in a bundle. Uncini start on segment 5 (setiger 2) and are arranged in single rows on the anterior segments, becoming alternate in the posterior thorax. Uncini are of similar form throughout the thorax and each has 5 to 7 teeth surmounted by 15 to 20 smaller teeth above the main fang (fig. 17. D, E). The dental formula is thus: MF : 5-7 : 15-20. The uncini lack basal prolongations or shafts, even in the first row. Abdominal uncini are borne on short, square pinnules. The tube is composed of sand grains cemented together with mud particles. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 197 At first it was assumed that these specimens possessing only one pair of branchiae were P. typha juveniles in which the second pair of branchiae was either undeveloped or had been lost. However subsequent examination revealed that the uncini of the anterior segments lacked the basal shafts found in P. typha, and also some of the specimens contain coelomic oocytes, apparently approaching a mature condition. In having only one pair of branchiae, P. dibranchis resembles P. vinogradovi Uschakov but lacks the transverse dorsal membrane between the branchial stalks that is present in the latter species. According to Uschakov (1955), P. cristata (Miiller) may also have one pair of branchiae but this species differs in possessing shafted uncini. In terms of the structure of the branchial apparatus, P. dibranchis is intermediate between P. unibranchia Day, which has a single branchia, and P. typha Grube, which has two pairs, all three species having branchiae with spirally arranged, or whorled, filaments. HABITAT. A wide variety of deposits, silty mud to coarse sand and shell gravel, from MTL to 24 m depth. RECORDS. Haroro - i ; Tetel Is. - 4 (including holotype) ; Graham Pt. - i ; Fintry Pt. - 3 ; ML 38 - i ; ML 204 - i ; ML 230 - i ; ML 283 - 6; ML 296 - i. British Museum (Natural History) Registration No. Holotype 197079 Paratypes 1970-80-89 NOTE. The habitat of P. dibranchis overlaps that of P. typha ; on Tetel Island the two species were taken from the same silty mud deposit on the reef platform at about MTL. FIG. 17. Pista dibranchis n.sp. (A) Dorsal view of anterior region. (B-C) Thoracic notosetae. (D-E) Profile and face views of uncinus. ig8 P. E. GIBBS Pista typha (Grube, 1878) Terebella (Pista) typha Grube, 1878 : 232, pi. 12, fig. 4. Pista typha: Fauvel, 1953 : 424, fig. 222. a-c. HABITAT. Silty sand and mud, MTL to LWM. RECORDS. Tetel Is. - 23; Fintry Pt. - i. DISTRIBUTION. Indo-west-Pacific. Reteterebella queenslandia Hartman, 1963 Reteterebella queenslandia Hartman, 1963 : 355, figs 1-3. HABITAT. Acropora rubble at LWM. RECORDS. Tetel Is. - i ; Maraunibina Is. - i. NOTES. The genus Reteterebella Hartman differs from the closely allied genus Eupolymnia Verrill in lacking notosetae on segment 4, thus having 16 instead of 17 thoracic setigers, and also in the first appearance of the double rows of uncini on the sixth (segment 10 or setiger 6), not the seventh uncinigerous segment (= setiger 8 in Eupolymnia). DISTRIBUTION. North-east Australia (Queensland). Terebella ehrenbergi Grube, 1870 Terebella ehrenbergi: Fauvel, 1953 : 421, fig. 220. a-c; Day, 1967 : 748, fig. 36.10. g-i. HABITAT. Crevices in reef platform. RECORDS. Matiu Is. - 2. DISTRIBUTION. Tropical Indo-west-Pacific. . Family SABELLIDAE Branchiomma cingulata (Grube, 1870) Dasychone cingulata: Willey, 1905 : 308, pi. 7, figs 170-173; Fauvel, 1953 : 442, fig. 234. f-h. Branchiomma cingulata: Johansson, 1927 : 161, text-fig. 14.1-2; Imajima & Hartman, 1964 : 355. HABITAT. Embedded in Acropora at LWM. RECORD. Tetel Is. - i. NOTES. The specimen is small, about 7 mm long. It has six radioles on each side of the branchial crown and the thoracic region consists of five segments. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 199 Specimens from Ceylon and Japan have a greater number of radioles and eight thoracic segments but are larger-sized, which may account for these differences. DISTRIBUTION. Indo-Pacific. Hypsicomus phaeotaenia (Schmarda, 1861) Hypsicomus phaeotaenia : Fauvel, 1953 : 447, fig. 236. a-1; Day, 1967 : 761, fig. 37.2. i-n. HABITAT. Embedded (boring?) in coral, especially Forties, and in beachrock. RECORDS. Kokomtambu Is. - 1 ; Tetel Is. - 4 ; Komimbo Bay - 3 ; Mamara Pt. - 1 ; Matiu Is. - 5 ; Paleki Is. - i ; Lauvie Is. - 7; Graham Pt. - 3. DISTRIBUTION. Western Africa; Mediterranean; Indo-west-Pacific. Megalomma intermedium (Beddard, i Branchiomma intermedium Beddard, 1888 : 261, pi. 21, figs 4-7; Fauvel, 1953 : 444, fig. 234. e. Megalomma intermedium: Pillai, 1965 : 164. HABITAT. Embedded in Porites boulder towards LWM. RECORD. Tetel Is. - i. DISTRIBUTION. Mergui Archipelago; Philippine Islands. Megalomma linaresi (Rioja, 1918) Branchiomma linaresi: Fauvel, 1927 : 317, fig. no. a-1. HABITAT. Embedded in Acropora at LWM and at 5 m depth. RECORDS. Tetel Is. - i ; Yandina - i. NOTES. The larger specimen is 45 mm long, including the branchial crown which has a length of 10 mm. There are 16 to 19 radioles on each side. The dorsal radioles carry the largest subterminal eyes, which gradually diminish in size on the lateral radioles and are absent from the ventral ones. The collar gapes widely on the dorsal side: it has lateral notches and large ventral lobes. There are 8 thoracic segments, the notosetae of which consist of narrow-winged capillaries and sub- spatulate setae. M. linaresi is known from northern Spain and the Mediterranean. Despite the absence of records from the Indian Ocean, the specimens from the Solomon Islands appear to be identical. DISTRIBUTION. North Atlantic (Spain) ; Mediterranean. 200 P. E. GIBBS Megalomma quadrioculatum (Willey, 1905) Branchiomma quadrioculatum Willey, 1905 : 307, pi. 7, figs 168-169. Megalomma quadrioculatum: Day, 1967 : 758, fig. 37.1. h-o. HABITAT. Amongst Phyllochaetopterus socialis tubes on reef platform towards LWM ; amongst serpulid tubes on undersurface of coral boulder. RECORDS. Cape Esperance - 36; Komimbo Bay - i. NOTES. The specimens were removed from sandy tubes constructed amongst the sponges and other encrusting organisms around the bases of the chaetopterid tubes. The larger specimens measure 13 to 14 mm long. The thorax consists of 6 or 7 segments with notosetae of two types, namely narrow-winged capillaries and paleae. There are 6 to 9 radioles on each side of the branchial crown and, in most specimens, only the two dorsal radioles carry subterminal eyes. However, a few specimens have smaller eyes on one or two radioles besides the dorsal radioles. The type specimen from Ceylon (23-5 mm in length) is almost twice the size of the Solomon Islands specimens and has 14 radioles per branchial lobe with subterminal eyes on the four dorsal radioles. It would seem therefore that the second (and occasionally a third) pair of eyes develops at a later stage and, until acquired, M. quadrioculatum bears a superficial resemblance to M . bioculatum (Ehlers) from which it can be distinguished by the presence of paleae in the notopodia. DISTRIBUTION. Indian Ocean. Megalomma trioculatum Reish, 1968 Megalomma trioculatum Reish, 1968 : 226, fig. 5. i-io. HABITAT. Sand, 2-9 m depth. RECORDS. ML 96 - i; ML 296- i. NOTES. The two specimens measure 15 to 16 mm long, the branchial crown being 2-0 to 2-5 mm in length. Both have 6 thoracic setigers (instead of 8 or 9) and the collar gapes widely on the dorsal side of the first setiger instead of extending to the mid-segmental line. Otherwise they agree closely with type description. At the bases of the two dorsal radioles, there are longitudinal streaks of an orange- brown pigment and the radioles are banded a similar colour. The subterminal eyes are brown or mauve. The tube is a fragile structure coated with sand grains. DISTRIBUTION. Marshall Islands. Megalomma vesiculosum (Montagu, 1815) Branchiomma vesiculosum: Fauvel, 1927 : 315, fig. 109. a-q. Megalomma vesiculosum: Day, 1967 : 758, fig. 37.1. p-u. HABITAT. Muddy sand between MTL and LWM. RECORDS. Tetel Is. - 20. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 201 NOTES. The subterminal eyes are entire, not divided as in M. pacificum Johansson although the latter may be a synonym of M. vesiculosum, according to Mesnil & Fauvel (1939). DISTRIBUTION. Atlantic Ocean; Mediterranean; Indian Ocean. Potamilla ehlersi Gravier, 1906 Potamilla ehlersi Gravier, igo6a : 37; 1908 : 87, pi. 6, fig. 260-264; Fauvel, 1953 : 449, fig. 238. g-i. HABITAT. Amongst Phyllochaetopterus socialis tubes on reef platform towards LWM. RECORD. Cape Esperance- i. NOTES. The specimen is 13 mm long (branchial crown = 3 mm). There are nine radioles on each branchial lobe ; the dorsal ones are without eyes but these are present on the next 4 or 5 radioles. There are n segments in the thorax, the anterior half of which is coloured chocolate-brown on the dorsal side. The tube is membraneous, covered with sand grains, and, before dissection, its aperture was rolled, as found in P. reniformis (Muller) (cf. Fauvel, 1927, fig. 107 1). DISTRIBUTION. Tropical Indo-west-Pacific. Sabellafusca Grube, 1870 Sabella fusca: Fauvel, 1927 : 302, fig. 104. a-f; Day, 1967 : 764, fig. 37.2. t-v. HABITAT. Beachrock. RECORDS. Lauvie Is. - 3. DISTRIBUTION. Mediterranean; tropical Indo-west-Pacific. Sabella melanostigma Schmarda, 1861 Sabella melanostigma Schmarda, 1861 : 36, pi. 22, fig. 190, with text-figs; Fauvel, 1953 : 439, fig. 232. h-n. HABITAT. Mud and silty sand, 24-33 m depth. RECORDS. ML 100 - i ; ML 230 - 5. NOTES. The specimens are only about 12 mm long and were extracted from narrow tubes (0-65 mm diameter) composed of mud particles. They are referred to P. E. GIBBS this species because they possess the peculiar 'shovel-like' pick-axe setae. However pigment spots above the parapodia are lacking. There are 7 radioles, each with 2 or 3 pairs of eye-spots, on either branchial lobe. The ventral lobes of the collar are large and there is a wide gap between the dorsal lobes. DISTRIBUTION. Circumtropical. Sabellastarte sanctijosephi (Gravier, 1906) Eurato sancti-josephi Gravier, igo6a : 42; 1908 : 105, pi. 7, figs 281-283, pi. 8, figs 284-285. Sabellastarte indica: Fauvel, 1953 : 445, fig. 235. a-h. Sabellastarte sanctijosephi: Day, 1967 : 771, fig. 37.5. f-i. HABITAT. In crevices in Forties boulders at LWM (Gibbs, 1969, fig. 137). RECORDS. Tetel Is. - i ; Paleki Is. - 5. DISTRIBUTION. Western Africa; tropical Indo-west-Pacific. Family SERPULIDAE Subfamily SERPULINAE Hydroides minax (Grube, 1878) Serpula minax Grube, 1878 : 269, pi. 15, fig. 5. Hydroides minax: Fauvel, 1953 : 4^o, fig. 241. f; Pillai, 1960 : 8, text-fig. 3. a-e. HABITAT. Amongst Phyllbchaetopterus socialis tubes at LWM. RECORDS. Matiu Is. - 2. NOTES. These specimens were referred to H. monoceros Gravier, a closely allied species, in an earlier paper (Gibbs, 1969). DISTRIBUTION. Ceylon; Philippine Islands. Hydroides uncinata (Philippi, 1844) Hydroides uncinata: Fauvel, 1927 : 357, fig. 122. a-h; Day, 1967 : 805, fig. 38.4. h-i. HABITAT. On Acropora at 5 m depth. RECORD. Yandina-i. DISTRIBUTION. Atlantic Ocean; Mediterranean; East Africa; Japan. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 203 Mercierella enigmatica Fauvel, 1923 Mercierella enigmatica: Fauvel, 1927 : 360, fig. 123. a-o; Day, 1967 : 812, fig. 38.5. o-s. Neopomatus uschakovi Pillai, 1960 : 28, pi. i, figs 1-2; text-figs 10. h, n. a-h, 12. a-h; Straughan, 1966 : 139 (synonymy). HABITAT. Brackish water - on stones and in sponge. RECORDS. Komimbo Bay (freshwater creek) - num. ; mouth of Lunga River at Lunga Pt. - 28. NOTES. In a study of the brackish water serpulids along the east coast of Australia, Straughan (1966) discovered that there is a continuous cline in the characters used to separate the two genera Mercierella Fauvel and Neopomatus Pillai. The Mercierella form is characteristic of the southern populations around Sydney and the warm water Neopomatus form is typical for the Queensland populations. The material from Guadalcanal is typical Neopomatus in that there are one or two rows of outwardly directed spines on the operculum, the collar and thoracic membranes are fused dorsally for up to three-quarters of the length of the thorax, and the collar setae have modified proximal teeth. DISTRIBUTION. Cosmopolitan in estuarine water. Serpula hartmanae Reish, 1968 Serpula hartmanae Reish, 1968 : 228, fig. 5. 11-16. HABITAT. Attached to coral on reef platform. RECORDS. Mamara Pt. - i ; Komimbo Bay - 3. DISTRIBUTION. Marshall Islands. Serpula vermicularis Linnaeus, 1767 Serpula vermicularis: Fauvel, 1927 : 351, fig. 120. a-q; 1953 : 454, fig. 239. a-q; Dew, 1959 : 22, fig. 3. a-h; Day, 1967 : 809, fig. 38.5. a-h. HABITAT. Attached to coral boulders on reef platform. RECORDS. Tetel Is. - 2 ; Komimbo Bay - 5. DISTRIBUTION. Cosmopolitan. Spirobranchus giganteus (Pallas, 1766) Spirobranchus giganteus : Fauvel, 1953 : 462, fig. 242. a-g; Day, 1967 : 803, fig. 38.3. h-k. HABITAT. Embedded in living Porites boulders (Gibbs, 1969, fig. 138) and encrusting on reef platform. 204 P. E. GIBBS RECORDS. Kokomtambu Is. -2; Tetel Is. - v. num.; Komimbo Bay -num.; Mamara Pt. - i ; Matiu Is. - 9; Paleki Is. - v. num. ; Sifola - i ; Graham Pt. - num. NOTES. This species is common in moderately sheltered conditions and the largest specimens, over no mm in length and 10 mm in diameter, were extracted from living Porites at Paleki Island. In comparison, encrusting forms on dead coral are much smaller in size. DISTRIBUTION. West Indies; Indo-west-Pacific. Spirobranchus coutierei (Gravier, 1908) Pomatoceropsis coutierei Gravier, 1908 : 125, pi. 8, figs 294-299, text-figs 482-487. HABITAT. Embedded in Porites towards LWM. RECORDS. Tetel Is. - 3. NOTES. Following Straughan's (1967) key to the Indo-west-Pacific species, this identification is based on the following two characters - (i) the operculum has three processes which are deeply divided so as to give six distinct horns, and (ii) the interbranchial membrane is fimbriated. DISTRIBUTION. East Africa; northern Australia (Straughan, 1967^). Vermiliopsis glandigerus Gravier, 1908 Vermiliopsis glandigerus Gravier, 1908 : 121, pi. 8, figs 290-291, text-figs 476-481; Fauvel, 1953 : 467, fig. 242. k; Day, 1967 : 813, fig. 38.6. g-i. HABITAT. Encrusting on reef platform. RECORD. Matiu Is. - i. DISTRIBUTION. Western and southern Africa; Indo-west-Pacific. Subfamily FILOGRANINAE Filograna implexa Berkeley, 1835 Salmacina dysteri: Fauvel, 1927 : 377, fig. 129. c-k; 1953 : 476, fig. 250. c-k; Dew, 1959 : 50, fig. 19. a-g. Filograna implexa: Fauvel, 1927 : 376, fig. 129. a-b; Day, 1955 : 450 (synonymy); 1967 : 817, fig. 38.7. a-h. HABITAT. Encrusting on an oyster shell attached to wharf pile. RECORDS. Yandina - num. NOTE. No individual with an operculum developed at the end of a branchial filament was noted amongst the colony; the specimens thus correspond to the Salmacina form. DISTRIBUTION. Cosmopolitan. THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 205 ADDENDUM Recently Professor J. E. Morton forwarded a small collection of polychaetes which he collected in the Solomon Islands during the 1965 Expedition. This material includes specimens of a further two species, bringing the total number of recorded species to 222. The species are the following : Family NEREID AE Perinereis neocaledonica Pruvot, 1930 Perinereis neocaledonica Pruvot, 1930 : 50, pi. 3, figs 77-79, text-fig. 4. a-c; Fauvel, 1932 : 107; 1953 : 2ii, fig. 108. c-g; Tampi & Rangarajan, 1964 : 106. RECORDS. Batuona Is - 10. DISTRIBUTION. Tropical Indo- west-Pacific. Family GLYCERIDAE Glycera subaenea Grube, 1878 Glycera subaenea Grube, 1878 : 184, pi. 8, fig. 8; Fauvel, igiga : 425, pi. 16, figs 48-51; Hartman & Imajima, 1964 : 164; Day, 1967 : 363, fig. 16.3. k-n. RECORDS. Komimbo Bay - 3. DISTRIBUTION. Indo-west-Pacific. REFERENCES ACHARI, G. P. K. 1968. Studies on new or little known polychaetes from Indian Seas. i. Trochochaeta watsoni (Fauvel) and Poecilochaetus serpens Allen. /. mar. biol. Ass. 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With a description of a new polychaete worm. Rec. Indian Mus. 1 : 257-261. LUTZEN, J. 1961. Sur une nouvelle espece de polychete Sphaerodoridium commensalis, n.gen., n.sp. (Polychaeta Errantia, famille des Sphaerodoridae) vivant en commensal de Terebellides stroemi Sars. Cah. Biol. mar. 2 : 409-416. MclNTOSH, W. C. 1885. Report on the Annelida Polychaeta collected by H.M.S. Challenger during the years 1873-1876. Rep. scient. Results 'Challenger' (Zool.) 12 : 1-554. 1901. Notes from the Gatty Marine Laboratory, St. Andrews no. 21. Ann. Mag. nat. Hist. (ser. 7) 8 : 216-232. MACNAE, W. and KALK, M. 1962. The fauna and flora of sand flats at Inhaca Island, Mocambique. /. Anim. Ecol. 31 : 93-128. MARENZELLER, E. VON. 1879. Siidjapanische Anneliden. i. Denkschr. Akad. Wiss., Wien, 41 (2) : 109-152. MESNIL, F. and FAUVEL, P. 1939. Polychetes s^dentaires de 1'Expedition du Siboga. Maldanidae, Cirratulidae, Capitellidae, Sabellidae et Serpulidae. Siboga-Exped. 24 (2) : 1-42. MILLER, C. D. and PEN, F. 1959. Composition and nutritive value of palolo (Palola siciliensis) . Pacif. Sci. 13 : 191-194. MONRO, C. C. A. 1928. On some Polychaeta of the Family Polynoidae from Tahiti and the Marquesas. Ann. Mag. nat. Hist. (ser. 10) 2 : 467-473. 1931. Polychaeta, Oligochaeta, Echiuroidea and Sipunculoidea. Scient. Rep. Gt. Barrier Reef Exped. 4 (i) : 1-37. 1939. On some tropical polychaetes in the British Museum, mostly collected by Dr. C. Crossland at Zanzibar, Tahiti, and the Marquesas. I. Families Amphinomidae to Phyl- lodocidae. Ann. Mag. nat. Hist. (ser. n) 4 : 161-184. I 939 a - O n some tropical Polychaeta in the British Museum, mostly collected by Dr. C. Crossland at Zanzibar, Tahiti and the Marquesas. Novit. zool. 41 : 383-405. OKUDA, S. 1935. Poecilochaetus tropicus n.sp., a remarkable sedentary polychaete from the South Seas. Proc. imp. Acad. Japan. 11 : 289-291. 1937- Spioniform polychaetes from Japan. /. Fac. Sci. Hokkaido Univ. (Zool.) 5 : 217-254. !937 a - Polychaetous annelids from the Palau Islands and adjacent waters, the South Sea Islands. Bull, biogeog. Soc. Japan. 7 (12) : 257-315. PETTIBONE, M. H. 1963. Marine polychaete worms of the New England region, i. Aphroditidae through Trochochaetidae. Bull. U.S. natn. Mus. 227 : 1-356. I963a. Revision of some genera of polychaete worms of the Family Spionidae, including the description of a new species of Scolelepis. Proc. biol. Soc. Wash. 76 : 89-104. 1966. Revision of the Pilargidae (Annelida : Polychaeta) including descriptions of new species, and redescription of the pelagic Podarmus ploa Chamberlin (Polynoidae). Proc. U.S. natn Mus. 118 : 155-208. 1969. Review of some species referred to Scalisetosus Mclntosh (Polychaeta, Polynoidae). Proc. biol. Soc. Wash. 82 : 1-30. J969a. The genera Polyeunoa Mclntosh, Hololepidella Willey, and three new genera (Polychaeta, Polynoidae). Proc. biol. Soc. Wash. 82 : 43-62. I96gb. The genera Sthenelanella Moore and Euleanira Horst (Polychaeta, Sigalionidae) . Proc. biol. Soc. Wash. 82 : 429-438. PFLUGFELDER, O. 1933. Landpolychaten aus Niederlandisch - Indien. Zool. Anz. 105 : 65-76. PILLAI, T. G. 1960. Some marine and brackish-water serpulid Polychaeta from Ceylon, including new genera and species. Ceylon J. Sci. biol. Sci. 3 : 1-40. 1965. Annelida Polychaeta from the Philippines and Indonesia. Ceylon J. Sci. biol. , Sci. 5 : 110-177. POTTS, F. A. 1910. Polychaeta of the Indian Ocean. Pt. 2. The Palmyridae, Aphroditidae, Polynoidae, Acoetidae and Sigalionidae. Trans. Linn. Soc. Lond. (Zool.) (Ser. 2) 13 : 325-353- THE POLYCHAETE FAUNA OF THE SOLOMON ISLANDS 211 POTTS, F. A. 1914. Polychaeta from the northeast Pacific. The Chaetopteridae with an account of the phenomenon of a sexual reproduction in Phyllochaetopterus and the description of the two new species of Chaetopteridae from the Atlantic. Proc. zool. Soc. Lond. 1914 : 955-994. - 1915. The fauna associated with the crinoids of a tropical coral reef; with especial reference to its colour variations. Publs. Carnegie Instn. 212 : 71-96. PRUVOT, G. 1930. Annelides polychetes de Nouvelle-Caledonie receuillies par M. Fra^ois. Archs Zool. exp. gen. 70 : 1-94. REISH, D. J. 1968. The polychaetous annelids of the Marshall Islands. Pacif. Sci. 22 : 208-231. RULLIER, F. 1965. Contribution a la faune ann I O 60- z 00 50- 40- 30- a o O O o j 'F'M'A'M'JJ'A'S'O'N'D' DATE OF COLLECTION, MONTHS FIG. 3. Agama pallida haasi subsp. nov. Sizes of animals caught at different times of the year. Squares, males; Circles, females; Diamonds, juveniles. Open symbols, animals from Transjordan; Solid symbol, animal from near Palmyra, Syria. REMARKS. It is a pleasure to name this lizard in honour of Professor Georg Haas who had already commented on its relatively large size (1951). The new taxon is most closely allied to Agama pallida Reuss 1833 from Eastern Egypt, Sinai and Southern Cisjordan. In Reuss' original description there is no indication of the type locality, except that the whole material under discussion had been collected by 226 Y. L. WERNER H 13 M S CO w H 00 ro o ro V Jo Ch t G 5 C i - - -5 ffi LIZARDS AND SNAKES FROM TRANSJORDAN 227 o N N b ^ CO ON | CO CO in N O - IS-t ^v in I r^ T *" in V w o ? ^ * * M " M in D -H n l I s * c i- ? nT 8 >H- C M ^ co 3 HI CO IH m in r^ N Tl-OO _- HI CO M 7> HI O t^ N JJ O M ro lO t* 1 ^ M ON a o 1 <* O ^t* vo e M , CO O O O HI HI HI HI CO O ON in in in co _. N oo M _ M CO . 0^ 1 vO ' I \ + >n in M M N ._, CO 1 < 1. ro HI M -HI in ^" ^^ ON ST. HI H ~ CO N 00 N O HI M CO HI * in HI < in J? N in ON O .. J i on . IH | o ' ^^ *v^ ' r^. ^ t^ Th VO *O H * ro ^ w co ^ HI HI H CO CO O\ O^ CO M i ^* 007^.^ o S^ ^ < M cocoin N 'oin c H CO C^ N CO -. M O ON co 3 1 ON HI 1 ' ^ in Tj-oo oo JV M M M M " Oi f^ 5 S CO HI r- ^^ B yO ^ r *"* t> O oo ^ "- 2" 3- 8i8> PH ^ Q *-r P* ^ xi % JS / t *S 2 1 * o ^p : IH > S5"s T S if! ^ ; J8 I a ^ ' S c T) !Z 5 7 Z* ^J ^D S ^ * c ^t O 0} C l is ^ ^ a 10 ' N I CO H . HI ON 13 rt o ^ II *u p I- S g ^a Numbe on tail 228 Y. L. WERNER Riippell. Reuss' original specimen label indicates "Aegypt, super." (Klemmer, 1967). The species, however, does not seem to occur in Upper Egypt, and Anderson (1896 : 79) gives "Sinai" as the type locality (see also Flower, 1933). Through the courtesy of Dr. Klemmer I could examine excellent photographs of the type (SMF 10007) an d satisfy myself that material from southern Cis Jordan and eastern Egypt (Kassassin) is in good general agreement with it. Reuss' description includes no scale counts, but some of his many measurements are represented in Table 3. The new form is so far known from central and northern Transjordan and SE Syria, but specimens from the rest of Syria and from Iraq will probably also be found to belong to this form. A. p. pallida Reuss and A. p. haasi n. ssp. are allopatric, possibly separated by the steep slopes constituting the eastern rim of the Wadi 'Arava. Though I have seen no intermediate forms, the few specimens from the Wadi 'Arava being typical pallida, conclusive evidence of reproductive isolation is not yet available. Thus it seems best to accord the two forms subspecific rank. In the northern part of its range A. p. haasi may be sympatric with A. ruder ata Olivier. I have omitted the references for one of these forms having been recorded within the accepted range of the other, as probably some of these instances are based on mis-identifications. However, it is my impression that this is not so in all cases (see also Pasteur and Bons, 1960). It is interesting that it is easier to distinguish between A. p. haasi and A. ruderata, on the basis of general habitus, than between A. p. pallida and A. ruderata. Moreover, sexual dimorphism in SV length is apparently moderate in A. p. haasi (largest $, 89 mm (HUJ-R 1117); largest $, 93-5 mm (HUJ-R 1118)), whereas it is considerable in both A. ruderata (Pasteur and Bons, 1960) and A. p. pallida (among 117 specimens from Cisjordan in the Hebrew University collection, largest $, 75 mm (HUJ-R 7509) ; largest $, 87 mm (HUJ-R 5506)). These phenomena apparently represent a case of "sympatric character divergence" (Mayr, 1965 : 82). It has been argued that A. pallida Reuss 1833 is conspecific with, and indistin- guishable from, A. mutabilis Merrem 1820 (Pasteur and Bons, 1960; Wermuth, 1967). In fact, this possibility had already been mentioned by Anderson (1898). However, the arguments (and diagrams) of Pasteur and Bons do not entirely exclude the possibilities that these are either two distinguishable allopatric forms (Flower, 1933) (with a complex borderline, or intergrading), or even sibling (partly sympatric) species (Schmidt and Marx, 1956 : 25). It therefore seems most prudent to retain, at present, the specific name pallida for the populations to which it has traditionally been applied. Agama blanfordi fieldi Haas and Werner (PI. 3 A) Agama persica fieldi Haas and Werner, 1969. Bull. Mus. Comp. Zool. Harvard, 138 (6) : 337-339, pis. 2-6. (Saudi Arabia: Al-Caissumah - Turaif .) MATERIAL EXAMINED (i). BM 1965.686 $ Qa el Umari (hard sand desert), 1965, S. Bisserot. LIZARDS AND SNAKES FROM TRANSJORDAN 229 PHOLIDOSIS. Dorsal scales subequal, keeled and shortly mucronate. Lateral scales similar but smaller. Ventral scales feebly keeled. Scales around middle of body, 80. MEASUREMENTS. SV, 105 mm; tail, 163 mm. COLORATION. Collector's note: "A. persica when first captured turned to a brilliant blue in the area of the dew-lap under the chin but not on any other part of the body. Both A. sinaita and A. persica turned blue when killed and preserved in spirit." (S. Bisserot.) Yellowish grey*. Dorsally, four darker longitudinal bands, brown with still darker margins. Each band is of uneven width, and contains about six alternating dilated and constricted zones. Through the dilated zones run trans- verse series of white dots which are interrupted by a median light band. Each dot coincides with an enlarged scale, making it more conspicuous. On the head there are two brown wavy crossbands, preceded by a longitudinal patch of the same colour. On the tail the dorsal pattern gradually changes to one of simple dark rings. Belly with a distinct central longitudinal, grey band, and irregular lateral ones. Gular pouch dark grey with remnants of blue. FIELD NOTES. "Three species of ... Agamidae were seen and collected . . . on the flat dried sand areas only the one specimen of A. persica was found". S. Bisserot. REMARKS. This specimen is identifiable according to Boulenger's (1885) key as A. blanfordi (S. C. Anderson, I966a; nom. subs, for A. persica Blanford 1881, nom. preoccup.) because of its unequal dorsal scales. However, the gular pouch and the scattered enlarged scales are less developed than in blanfordi and the head and body, especially the former, are more depressed than in this form. On the other hand, a series of very similar specimens collected in NE Saudi Arabia by Mr. Henry Field shows considerable variation in the development of the enlarged dorsal tubercles; several specimens have homogenous scaling and are thus identifiable as isolepis (Boulenger, 1885, lectotype from between Magas and Bampur, southeastern Iran S. C. Anderson, i966b). Similar, apparently, were the two specimens from Meso- potamia which Steindachner (1917) identified as "isolepis with a unique pattern". Our specimen is very similar to the pair depicted by him (at least in proportions, pattern, and non-meristic scale characters). Apparently this is a form allied both to the agilis-isolepis Rassenkreis (Wettstein, 1951) and to blanfordi. It is, in certain respects, intermediate between the two. It is characterized by variably (mostly feebly) developed dorsal tubercles and gular pouch, and by a very distinctive pattern of longitudinal bands. A confusion con- cerning agilis and blanfordi had already been suspected by Schmidt (1941). This new form has previously been referred to as A. persica Blanford. Thus at least part of the series mentioned by Haas (1957) belongs to A. blanfordi fieldi, as judged by specimen CAS 84541 (now HUJ-R 7081) and by his description of the pattern of CAS 84477. The latter description has been accepted by Khalaf (1959) *When examined by the author. 230 Y. L. WERNER as applying to A. persica Blanford though differing from that usually encountered in this species. Agama sinaita von Heyden (PI. 3 B-E) Agama sinaita von Heyden, 1827. In Riippell, Atlas Reise nord. Afrika, Kept., p. 10, pi. 3 (Sinai). MATERIAL EXAMINED (4). BM 1965.685 <$ Wadi Ratan [W. Ratam] (basalt desert), April-May 1965, S. Bisserot. BM 1965.801 , BM 1965.802 $ Petra (on red and yellow sandstone respectively), 2 August 1965, D. Western. BM 1965.803 $ Wadi Musa, near Petra (basking on soil on top of rock), 4 August 1965, D Western. PHOLIDOSIS. In the specimen from the basalt desert (BM 1965.685) the tail is moderately compressed laterally including its thick basal portion. The two dorsal rows of caudal scales are enlarged, their thick keels creating the impression of a slight crest. The specimens from Petra and Wadi Musa resemble specimens from Cisjordan in that the thick part of the tail is nearly cylindrical, and carries dorsally four straight rows of strongly keeled scales, the two median rows being little better developed than their immediate neighbours (PI. 3 C & E). MEASUREMENTS. SV: 103, 69, 79, 79 mm. Tail of the last: 125 mm (other tails incomplete). In all specimens the third toe is hardly longer than the fourth (PI. 3 B). COLORATION. "The ability of A. sinaita to change colour was observed on several occasions but did not appear to follow a regular pattern. Most specimens were observed to be a brilliant cobalt blue on first sight [Mountfort, 1965 : plate 4oa] but changed to a dark chocolate brown when pursued. One specimen kept alive changed from brown to blue over the head and shoulders and part of the flanks when food was put in its mouth. This reaction was repeated in captivity in this country [England] and was also caused by the temperature being raised to 80 F [27 C] or higher . . . A. sinaita turned blue when killed and preserved in spirit." (S. Bisserot.) Professor H. Mendelssohn (Tel- Aviv University) has studied the colour changes of this species, as part of his research of its behaviour, and found marked sexual dichromatism. Hence the arrangement of the following notes on our specimens. Males: BM 1965.865 (preserved) : blueish grey (throat and belly darker), tail grey (yellowish ventrally). 1965.802, collector's note: "bright blue all over, faded after death." The preserved specimen is dark grey, nearly black, with underparts lighter (and posteriorly very light) brownish grey. Females'. Collector's notes summarized: "head blue when alive, turning brighter blue when killed. Body grey with orange blotches". After preservation the heads are blackish, the bodies dark grey, and the tails have alternating darker and lighter transverse bands. The throats are grey (reticulated in 1965.801) and the abdomens steel grey; the remaining underparts are cream- white. REMARKS. The unusually large male with compressed tail, from the basalt desert, conceivably represents a distinct subspecies, but this cannot be assessed on the basis of a single specimen. (Wettstein, 1951 : 433, mentions three specimens LIZARDS AND SNAKES FROM TRANSJORDAN 231 from northern Trans Jordan, but gives no particulars apart from the colour.) The remaining specimens have tails similar to those of animals from southeastern Israel and northeastern Sinai, and the same is true of two collected by Haas between Guweira and Aqaba in 1936 (HUJ-R 1137, HUJ-R 5231). On the other hand, all the specimens from Trans] ordan are characterized by the third toe being hardly longer than the fourth. Specimens from southeastern Israel and northeastern Sinai usually have a longer 3rd toe (PI. 3 B & D). Agama stellio brachydactyla Haas (Text-figs 4, 5) Agama stellio brachydactyla Haas, 1951. Ann. Mag. Nat. Hist. (Ser. 12), 4 : 1052 (Israel : foot of Jebel Lussan, near Israel-Sinai frontier, S.S.W. of Beer-Sheba). MATERIAL EXAMINED (3). BM 1965.787-789, Basta (remarks on habitats, under coloration), 3 August 1965, D. Western. PHOLIDOSIS. A mid-dorsal band of unequal enlarged scales, about six times as broad as one of the larger scales. The transverse series of tubercles extend across this band. They are slightly interrupted medially but here some of the interstitial scales are almost as large as the tubercles themselves. All large scales are either distinctly keeled, mucronate, or spinous (Text-fig. 4). FIG. 4. Agama stellio brachydactyla. Mid-dorsal sclaes of BM 1965.787 from southern Transjordan (Basta). (From a photograph.) Scale, 10 mm. Lamellae under ist finger: 9, 10, 9. Under 4th toe: 22, 24, 22. MEASUREMENTS. SV: no, 84, 103 mm. Tail of smallest: 116 mm; other tails incomplete. Foot hardly longer than tibia, being shortest in largest specimen. COLORATION. Collectors notes: 1965.787, "Back: black; black and yellow trans- versely striped tail; orange blotches near head (basking on orange mauve quarzite, 232 Y. L. WERNER 3.25 pm)." 1965.788, "Yellow and black with orange spots on neck. (On yellow sandstone, 4.20 pm)". 1965.789, "Brownish with orange and brown blotches. Tail black with orange transverse stripes. (On soil besides flintstone, 3 pm)". In the preserved condition all three specimens are grey dorsally with pale yellowish blotches, the largest blotches arranged in mid-dorsal asymmetrical pairs, each pair tending to fuse and to form a large obliquely transverse blotch. On the tail, trans- verse bands of the same yellowish colour, which also covers the underparts, the throat being faintly reticulated with pale grey. REMARKS. All three specimens are presumably not fully grown. These indi- viduals are not very typical brachydadyla. In the number of lamellae under the toes, as well as in the relative size of the mid-dorsal scales, they rather resemble specimens from the northern Negev in Israel, which are intermediate between brachydadyla and the form inhabiting mediterranean Israel. The specimens from Basta are assigned here to brachydadyla in accordance with their coloration and also in order to indicate their geographical affinities (Daan, 1967). Six other specimens from Transjordan are available. Only one from Petra (HUJ-R 1096, 29 March 1935, Haas) shows a similar arrangement of a mid-dorsal band of subequal enlarged scales. Two other specimens from southern Transjordan (HUJ-R 1094 and 1103) and three from the Jerash-Amman area (HUJ-R noi, 1 1 10 A, and mo B) have the dorsal transverse series of tubercles clearly separated by smaller scales, as is usual in specimens from northern Cisjordan. The number of lamellae under the 4th toe in the nine specimens from the two areas in Transjordan is presented in Text-fig. 5 which also includes, for comparison, samples from five localities in Cisjordan. As the figure shows, in Cisjordan there is a pronounced north-south gradient in this character (with the higher values in the north). A parallel but less prominent gradient is indicated in Transjordan. CHAMAELEONIDAE Chamaeleo chamaeleon recticrista Boettger Lacerta chamaeleon Linnaeus, 1758. Syst. Nat., p. 204 (Africa and Asia.) Chamaelo vulgaris var. recticrista Boettger, 1880. Jahresber. senckenberg. naturf. Ges. Frankfurt, p. 198 (Jeruslaem and Haifa). MATERIAL EXAMINED (i). BM 1963.667 juv. between Shaubak and Tafila (on camel thorn), 1963, S. Bisserdt. FIG 5. Agama stellio subspp. Numbers of lamellae under fourth toe in Trans- and Cisjor- dan. Material included in each sample was collected within the area of the map covered by the relevant circle. (A) Jerash-Amman area; (B) Desert locality included in sample C; (C) Petra-Basta area; (D) Hills surrounding Lake Tiberias; (E) Ramot-HaShavim ; (F) Jerusalem and adjacent Judaean Hills; (G) Be'er-Sheva and vicinity; (H) Sde- Boker-'Avdat area; M, Mean; N, Number of specimens. (Political frontiers as before 1966.) LIZARDS AND SNAKES FROM TRANSJORDAN 233 234 Y - L. WERNER PHOLIDOSIS. Gular and abdominal crest of enlarged scales present. MEASUREMENTS. SV: 44 mm; tail: 42 mm. COLORATION. Grey with irregular dots of darker grey. On each flank two longi- tudinal rows of five light cream blotches. Enlarged scales of dorsal, gular and abdominal crests the same light cream. REMARKS. A half -grown specimen from El-Hamma (NW Transjordan, in Israel HUJ-R 1501; 13 March 1945, Coll. G. Haas) is similarly coloured. In a juvenile from Jerash (HUJ-R 1502; 15 November 1945, Coll. Haas and Hoofien), measuring 36 mm (SV) the occipital casque is not (yet) developed. All three specimens conform to the chamaeleons of northern Israel rather than to the C. c. musae-like animals from further south (Hoofien, 1964). LACERTIDAE Acanthodactylus boskianus asper Audouin Lacerta aspera Audouin, 1829. Descr. Egypte, Kept., Suppl., p. 173, pi. i fig. 9 (Egypt). Acanthodactylus boskianus var. asper Lataste, 1885. Ann. Mus. Geneva 2 (2) : 496. MATERIAL EXAMINED (3). BM 1965.691 $ and BM 1965.693 $ Tell Quarma [=Tell Qarma] (blown sand wadi), April-May 1965, S. Bisserot. BM 1965.804 $ Wadi Musa near Petra (sandy soil near bushes), 4 August 1965, D. Western. PHOLIDOSIS. Scales across middle of body: 31, 38, but 55 in BM 1965.693. Gular scales in straight median series: 26, 32, 26. Lamellae under 4th toe: 21-22. MEASUREMENTS. BM 1965.691, 56 mm SV, 121 mm tail. BM 1965.693, 81 mm SV, and BM 1965.804, 62 mm SV (tails incomplete). COLORATION. BM 1965.804, collectors note: "brown: long orange stripes, spotted with black". REMARKS. Eleven other specimens from various localities in southern Trans- Jordan (HUJ-R 1335, 1338, 1341, 1661, 5041-6, 5053) have the following pholidotic counts: Scales across middle of back, 29-51 (against 29-42 in southern Cisjordan, N = 24). Gular scales in a straight median line, 25-35 (24-31, in Cisjordan, N =24). Lamellae under 4th toe, 19-22 (as in Cisjordan). Other conventional counts are also similar in Cis- and Transjordan except that some Cisjordan specimens show a reduction of the lateralmost ventral plates, so that only 8-9 longitudinal series are present. In general, adult male A. b. asper are larger than females. The 2 largest males seen from Transjordan are 75 and 77 mm (SV), so that the female from Tel-Qarma (81 mm) appears unusually large. The dorsal pattern of some Transjordan males includes rows of sharply defined blackish dots, instead of the more usual rows of irregular brownish spots. LIZARDS AND SNAKES FROM TRANSJORDAN 235 Acanthodactylus grandis Boulenger (PI. 4 A, B) Acanthodactylus grandis Boulenger, 1909. Ann. Mag. Nat. Hist., 4 (8) : 189 (Jerud and Ataiba, Syria) . MATERIAL EXAMINED (2). BM 1965.692 $ Ain el-Enoquiyya (sand and stone wadi) ; BM 1965.694 $ Tell el Mukheizin (Hamada, beneath carcass of dog) ; both April-May 1965, S. Bisserot. PHOLIDOSIS. Scales across middle of body: 60; 60. In BM 1965.692 there is a fifth small upper labial before the center of the eye, on each side. MEASUREMENTS. BM 1965.692: SV: 73 mm; tail: 126 mm. BM 1965.694: SV: 96 mm (tail incomplete). COLORATION. BM 1965.692 (PI. 4 B) : Black spots, each covering up to ten scales, arranged in ten regular longitudinal rows, and in irregular transverse series. The two median rows begin at the occiput but disappear before the middle of the back ; 4th and 5th row on each side present on flanks but absent from neck. Some rows extend on the tail, on the lateral sides of which the spots are represented as vertical blotches at every second suture between scale rings. Ground colour (preserved), nearly uniform grey (compare PI. VI of Boulenger, 1923). BM 1965.694 (PI. 4 A) : Six dark longitudinal stripes faintly indicated on back. Along these there are a few, irregularly scattered, small blackish spots, each covering up to 7 scales. In both specimens the sides of the head bear alternate light and dark vertical bars, one of the latter passes through the eye. REMARKS. All characters of both specimens are within the range of variation shown by A . grandis in the HU J collection, some of which have been mentioned by Haas (1943; Transjordan between Hissa and Ma'an). There is some difficulty in distinguishing immature A. grandis from A. scutellatus scutellatus, which likewise has smooth scales, since the range of variation of almost all conventional scale counts is nearly identical (see also Boulenger, 1923 : 50). BM 1965.692 resembles A. s. scutellatus in the number of supralabials (5) before the center of the eye, and in its relatively long foot with moderately well developed pectination. The specimen however is certainly assignable to A . grandis for the following reasons : The snout with its somewhat swollen nasals resembles that of other A . grandis, and not at all the pointed snout of A . s. scutellatus. While five supralabials in front of the center of the eye are characteristic of A. s. scutellatus, and 4 of A. grandis, 5 may sometimes occur in the latter (see also Boulenger, 1921 : 114-115). The longer foot and relatively stronger pectination (when compared to large A. grandis such as BM 1965.694) appear to be largely juvenile characters, which are paralleled in series of other species of Acanthodactylus containing mature and immature specimens. Moreover the pectination is still far less developed than in adult A. s. scutellatus from southern Israel. 236 Y. L. WERNER The pattern conforms closely to that of A. grandis and differs most strikingly from that of A . s. scutellatus, as the latter never show any longitudinal arrangement of the markings. Acanthodactylus tristrami tristrami Gunther (PI. 4 C, D) Zootoca tristrami Gunther, 1864. Proc. Zool. Soc., p. 491 (Lebanon). Acanthodactylus tristrami Boulenger, 1881. Proc. Zool. Soc., p. 746, pi. 64, fig. i. MATERIAL EXAMINED (i). BM 1962.352 Jordanian-Syrian border, Jerusalem- Damascus Rd (Outside customs shed) [probably loc. i on map], 4 June 1952, W. Larmuth. PHOLIDOSIS. Scales across middle of body: 59. Longitudinal rows of ventrals: ii. Other characters also in agreement with Boulenger's (1921) data for A. tristrami. MEASUREMENTS. SV: 82 mm; tail (tip missing) : 86 mm. COLORATION. The blackish markings tend to form a reticulum along each side of the dorsum (PI. 4 C). FIELD NOTES. "Died while ovipositing". REMARKS. Angel (1936) described from NE Syria A. t. orientalis (48-56 scales across middle of body), which was also reported from the neighbourhoods of Rutba (Schmidt, 1939) and Mosul (Haas, 1952) in Iraq. From Haditha, Iraq, Schmidt (1939) described A. t. iracensis (45-46 scales across middle of body). Thus Giinther's (1864) and Boulenger's (1921) A. tristrami was accorded subspecific rank as A. t. tristrami (58-65 scales across middle of body). Our specimen appears assignable to the typical form, as well as two specimens in the HUJ collection, reported by Haas (1943) : HUJ-R 1333 <$, 15 km S of Amman, SV 92 mm; HUJ-R 1332 , 45 km S of Amman, SV 69 mm (after a year in captivity). Scales across middle of body, 58, 57 respectively. Ventrals in 10 rows. All three specimens are larger than Angel's A. t. orientalis (1936; 50-66 mm snout- vent, N = 8), although this alone would not have been taxonomically significant. The dorsal pattern of HUJ-R 1333 (<) consists of distinctly X-shaped blackish marks (PI. 4 D; Boulenger, 1921). Markings intermediate between this pattern and the reticulum of BM 1962.352 (?) are present on the female (the type ?) figured by Tristram (1885: PI. 16, fig. 2). Eremias brevirostris microlepis Angel Eremias brevirostris microlepis Angel, 1936. Bull. Inst. Egypte 38 : 112-113 ("Haouarine" 5 5 km SE of Horns, Syria) . MATERIAL EXAMINED (2). BM 1965.689 $ (?) Qasr Amra (hamada) ; BM 1965.690 $ (?) Shishan (hamada) ; both, April-May 1965, S. Bisserot. LIZARDS AND SNAKES FROM TRANSJORDAN 237 PHOLIDOSIS. Scales across middle of body: 60; 62. Longitudinal series of ventral plates: 10. Plates in collar: 9. Gular scales in a straight median series: 29; 28. Femoral pores: 15, 14-15. Lamellae under 4th toe: 20; 24. Upper labials anterior to centre of eye: 5, the 5th being the first of two small false supralabials below the subocular. MEASUREMENTS. SV 46; 49 mm. Tail : 69 (tip missing) ; 81 mm. COLORATION. Both pale, the ocelli inconspicuous. FIELD NOTES. "The blown sand areas in wadis were the chief habitat of the fringe-toed lizards, Acanthodactylus . . . however the lizard (Eremias brevirostris) was also seen in this habitat but not as frequently as on the hamada" (S. Bisserot). REMARKS. Specimens from eastern and north-eastern Syria, like those from Iraq, are so far inseparable from the typical form (Angel, 1936 ; Schmidt, 1939 ; Haas and Werner, 1969). Angel's microlepis from western Syria (and a greater altitude) had been based on a single specimen, and was not regarded as valid by Haas (1957 : 73). However, the present two specimens from northern Trans Jordan agree fairly well with Angel's description. Furthermore, 13 specimens from central Trans- jordan (Amman-Ma'an) in the collection of the Hebrew University (Haas, 1943 : 14) show a clear affinity to microlepis, having 46-57 (commonest numbers 53-54) scales across the middle of the body, and also relatively small gular scales (21-29, usually 25-27, in a straight series). Interestingly a specimen from southern Trans Jordan (Guweira-Aqaba, HUJ-R 1230) has only 44 scales across the middle of the body (and 25 gulars). For comparison, Angel's (1936 : 112) E. b. brevirostris from NE Syria had 40-52 (commonest numbers 47-49) scales across the middle of the body, and 20-25, usually 21-23, gular scales in a straight series. Thus E. b. microlepis occupies the centre (around Jebel ed Druze) of the western distributional frontier of the species (Hoofien, 1957), possibly intergrading with the typical form to the north, east and south. Eremias guttulata guttulata Lichtenstein Lacerta guttulata Lichtenstein, 1823. Verz. Doubl. Mus. Berl., p. 101 (Egypt). Eremias guttulata, A. Smith, 1845. 111. Zool.. S. Afr., Kept., PI. 48, fig. 8. Eremias guttulata forma typica, Boulenger, 1921. Monograph of the Lacertidae, London, 2, p. 258. Eremias guttulata guttulata, Wettstein, 1928. Sitzber. Akad. Wiss. Wien (math.-natur.) 137, Abt. i, p. 782. MATERIAL EXAMINED (i). BM 1965.688 $ 2 miles S of Azraq Druze (basalt desert), April-May 1965, S. Bisserot. PHOLIDOSIS. Scales across middle of body: 50. Longitudinal series of ventral plates : 8. Femoral pores : 13-14. Lamellae under 4th toe : 22-24. Upper labials preceding subocular (which enters lip) : 4. MEASUREMENTS. SV: 46 mm. Tail: 83 mm (tip regenerated). 238 Y. L. WERNER COLORATION. The dark borders of the dorsal 'ocelli' are black and tend to merge with their neighbours laterally, forming incomplete black crossbands, which are interrupted by the white centres of the 'ocelli'. REMARKS. The snout is very elongated, pointed and flattened. In comparison with specimens from Cis Jordan the pileus is smooth and flat, eyes and nostrils being little elevated. Fourteen other specimens from various localities between Amman and Petra (HUJ-R 1237, 1240, 1256-7, 1259-60, 1262-3, 6236-8, 6273-4, 6300) have the following ranges of counts: Scales across middle of body, 44-57 (48-52 in 9 speci- mens). Longitudinal series of ventral plates, 10. Femoral pores, 10-14 ( I2 ~ I 3 m 9 specimens). Lamellae under 4th toe, 18-24 ( 22 m 6 specimens). Upper labials preceding subocular, 4. The pileus, as in the Basalt Desert specimen, is relatively smooth and flat, although in a few specimens the nostrils (and sometimes the eyes too) are somewhat elevated. The 3 largest specimens measure 50-51 mm (SV). In none of these 14 specimens does the dark component of the pattern occupy such a large area as in the specimen from the Basalt Desert, nor is this component black. In some specimens it is brown, in others, pale to the point of becoming indistinct. Some specimens show a tendency for lateral confluence of 'ocelli', but the resulting pattern resembles strings of beads rather than crossbands of uniform width. The range of coloration known from Cisjordan resembles that shown by these 14 specimens. Thus the Basalt Desert specimen is outstanding in its black and extensive dark pattern, perhaps as an adaptation to its habitat. Ophisops elegans blanfordi Schmidt (Text-figs 6, 7) Ophisops blanfordi Schmidt, 1939. Zool. Ser. Field Mus. Nat. Hist., 24 (7) : 64-65 (Halfaya, 20 miles east of Amara, Iraq). MATERIAL EXAMINED (2). BM 1963.668 ^ N of Shaubak, 1963, S. Bisserot; BM 1965.687 $ Ain el Enoquiya (sand and stone wadi), April-May 1965, S. Bisserot. PHOLIDOSIS. Scales and plates around middle of body 38; 34. Femoral pores: 10-11 ; 10-11. Lamellae under 4th toe : 22-24. Upper labials preceding subocular: 4. Third postsubocular in broad contact with auricular. Postnasal: single. Occipital of medium size (somewhat larger than postnasal). MEASUREMENTS. SV: 42; 40 mm. Tail of <$: 92 mm; of $ missing. COLORATION. Both have the usual Ophisops elegans pattern except that there is a distinct dark vertebral line running from the occiput to the pelvic region. REMARKS. Both specimens agree with Schmidt's description, except in having a slightly higher number of scales around the body (Schmidt's 92 specimens, all from the lower Tigris-Euphrates Valley, had 30-36 scales and plates around the middle of the body, averaging 33). LIZARDS AND SNAKES FROM TRANSJORDAN 239 The dark vertebral line observed in the two specimens from Transjordan occurs only rarely in 0. e. ehrenbergi from Cisjordan (N = 50), and then only on the neck. Likewise, Lantz (1930 : 41) says of the pattern of 0. e. elegans "Dessin caracterise per la bande occipitale rudimentaire . . . Bande occipitale absente ou reduite a un petit trait ou a quelques petites taches noires sur la nuque." It is much commoner, and better developed, in 0. e. schlueteri from Cyprus (N = 16). Ophisops from Transjordan in the HUJ collection fall into two groups. All those from Jerash and its vicinity (N =16: HUJ-R 1190, 1203, 1204/1-2, 1205, 1206/1-4, 1207/1-3, 1208/1-2, 1209, 1561) have double postnasals. In most of them, the vertebral line is either absent, or confined to the occipital region; but in 3 $3 it extends to the shoulders and in a single male it reaches the midbody although it is very faint. These specimens appear to be assignable, like all those from Cis- jordan, to 0. e. ehrenbergi. On the other hand, specimens from between Amman and Petra are assignable to blanfordi (N =9: HUJ-R 1183, n86, 1218, 1220-22, 6158-60). Of these, 5 have single postnasals, 3 have double postnasals, and one is to i/> Z H- I/) O n D..O D cm oo n v o DO on 1/2 01 23456 VERTEBRAL LINE FIG. 6. Ophisops elegans subspp. from. Transjordan. Number of postnasals against extent of vertebral line (o, none; 2, only on occiput; 3, reaching shoulder; 4, reaching midbody; 5, reaching pelvis; 6, reaching tail base. These values are adjusted by + i for unusually intense lines, and by -i for particularly faint ones). Open symbols, O.e. ehrenbergi from the Jerash area; Solid symbols, O. e. blanfordi (details in text); Squares, males; Circles, females; Diamonds, juveniles. 240 Y. L. WERNER asymmetrical. In most the vertebral line is well developed and this is particularly true of those with double postnasals. Thus the two forms are distinguishable by the combination of these two characters (Text-fig. 6). Possibly they are also distin- guishable by a combination of femoral pore number and vertebral line extent (Text-fig. 7). a 13 a. to to UJ oe. O a. 12 1 1 o 10 D D D a oo na 0123456 VERTEBRAL LINE FIG. 7. Ophisops elegans subspp. from Transjordan. Number of femoral pores (repre- sented for each specimen as the mean of both femurs) against extent of vertebral line. Symbols as in fig. 6. The 9 HU J blanfordi specimens have the following scale counts : Scales and plates around middle of body, 29-44 (39-41 in 4 specimens) ; Femoral pores, 8-13 ; Lamellae under 4th toe, 20-25. Neither these nor the remaining conventional counts differ markedly from those found in 0. e. ehrenbergi. In conclusion, while the Ophisops of the Jerash district appears to be consub- specific with 0. e. ehrenbergi of Cisjordan, the form occurring in the more arid parts of Transjordan is Schmidt's 0. blanfordi. This, however, does not seem to merit specific rank since there are indications of intergradation with 0. elegans in Trans- Jordan (details above) and Iraq (Haas and Werner, 1969), and there is no evidence of LIZARDS AND SNAKES FROM TRANSJORDAN 241 sympatry. Two additional alleged blanfordi characters in fact occur also in (other) 0. elegans: the small temporal scales, which occur in 0. e. schlueteri (Cyprus) ; and the situation of the third post subocular which in 0. e. ehrenbergi (Cisjordan) and 0. e. schlueteri sometimes touches and sometimes fails to touch the auricular. SCINCIDAE Chalcides oceltatus ocellatus Forskal Lacerta ocellata Forskal, 1775. Descr. Anim., p. 13 (Egypt). Chalcides ocellatus forma typica, Boulenger, 1890. Ann. Mag. Nat. Hist. 5 : 444-445. Chalcides ocellatus ocellatus Wettstein, 1928. Sitzber. Akad. Wiss. Wien (math.-natur.), 137, Abt. I, p. 784. MATERIAL EXAMINED (i). BM 1965.785 Aqaba (on rocks close to beach, Red Sea coast), 5 August 1965, D. Western. PHOLIDOSIS. Scales around the middle of the body: 30. MEASUREMENTS. SV 61 mm; tail: 69 mm. COLORATION. Collector's note: "brown with darker brown and white spots". The 'ocelli' are numerous and are arranged in transverse series on the neck and tail. They are small, each occupying less than a single scale. REMARKS. Two out of 3 specimens (the 3rd being damaged) from 65 miles SSE of Amman (HUJ-R 1442, 5107, 5108 June-July, 1938 Haas) have 28 scale rows. The same applies to HUJ-R 1469 from El-Hamma (NW Transjordan within Israel 13 March 1945, Haas). The pattern of HUJ-R 5107 is remarkably irregular, many of the 'ocelli' having only a black spot on one side of the white centre instead of a complete border. In HUJ-R 1442 and 5108 (juveniles) there are only faint indica- tions of 'ocelli'. The specimen from El-Hamma has 'normal' 'ocelli', each occupying a scale. Eumeces schneideri princeps Eichwald (PL 5 B) Euprepes princeps Eichwald, 1839. Bull. Soc. Imp. Nat. Moscow, 2 : 303-307 ("In ora Caspia occidentali, ad montes praesertim Talyschensis") . Eumeces princeps, Taylor, 1935. Kansas Univ. Sci. Bull., 23 : 138. Eumeces schneideri princeps, Eiselt, 1940. Zool. Anz., 131 : 218. MATERIAL EXAMINED (i). BM 1965.695 <$ Ain el Enoquiyya (basalt desert), April-May 1965, S. Bisserot. PHOLIDOSIS. Scales around middle of body: 27. Dorsal scales from occiput to above cloaca: 67. MEASUREMENTS. SV: 115 mm (tail regenerated). COLORATION. Ground colour of back light brown. No light spots. Along the 242 Y. L. WERNER flank a dark brown band, 2-3 scales broad; its lower border half a scale above the light lateral band, its upper border fairly sharp (PI. 5 B). The light lateral band is intensely white. (It may have been yellow at the time the animal was killed, six months prior to its examination by me.) REMARKS. The scale counts of this specimen are characteristic of princeps (Eiselt, 1940: Table i), but the colour is unusual, and may represent an adaptation to the basalt desert. A specimen from Shaubak (BM 1963.669) here assigned to schneideri shows some tendency towards a similar coloration. However, a specimen collected 65 miles SSE of Amman (HUJ-R 1389) and clearly assignable to princeps (27 scale rows, 69 dorsal scales from occiput to above cloaca) is uniformly coloured having neither light spots nor darkened flanks, the light lateral band merging with the light belly. Eumeces schneideri schneideri Daudin (PI. 5 A, C) Scincus schneideri, Daudin, 1802. Hist. Nat. Rept., 4 : 291. Eumeces schneideri (part*), Taylor, 1935. Kansas Univ. Sci. Bull. 23 : 126. Eumeces schneideri schneideri, Eiselt, 1940. Zool. Anz., 131 : 213. MATERIAL EXAMINED (2). BM 1963.669 N of Shaubak, 1963, S. Bisserot. BM 1965.786 Petra (on red sandstone), 1965, D. Western. PHOLIDOSIS. Scales around middle of body: 26, 24. Dorsal scales from occiput to above cloaca : 65, 66. MEASUREMENTS. Largest (BM 1965.786): SV: 114 mm; tail: 209 mm. COLORATION. Both specimens have the usual light lateral band passing through the ear. BM 1963.669 (PI. 5-C) : Only a few small light (originally yellow-orange ?) spots, each covering up to a third of a scale. Flanks mottled dark brown above the light band; each dark spot covering the posterior portion of a scale. BM 1965.786 (PI. 5 A): collector's note: "green with orange spots". The spots each cover up to a whole scale, and are irregularly arranged; a tendency to form transverse series is particularly evident on the tail. REMARKS. These specimens were collected relatively near the area where, in Israel, the northwestern pavimentatus, and the southern schneideri intergrade. In southern Israel and in Sinai (Schmidt and Marx, 1956 : 28) there occur populations in which the pattern is regularly of the schneideri type, but the scale counts of many specimens tend towards those characterizing pavimentatus (Eiselt, 1940: Table i). This situation is exemplified by BM 1965.786 from Petra, which it seems best to assign to schneideri (see also Taylor, 1935 : 130) like the specimens from southern- *Taylor includes in schneideri single specimens from "Haiffa" and "Mt. Jerusalem", within the range of pavimentatus. These specimens evidently are adult males of pavimentatus which, unlike the females, lose the whitish streaks adorning the young. The orange spots however, remain arranged in longi- tudinal rows (see his Plate 5). LIZARDS AND SNAKES FROM TRANSJORDAN 243 most Israel. BM 1963.669 from North of Shaubak has 26 scale rows, and its very broad dorsal scales exclude it from princeps. Mabuya vittata Olivier Scincus vittatus Olivier, 1804. Voy. Emp. Ottoman, 3, p. 103, pi. 29, fig. i (sands west of Rosetta) . Mabuia vittata Boulenger, 1887. Cat. Lizards Brit. Mus., 3, p. 176. MATERIAL EXAMINED (i). BM 1963.670 2 km SE Druze village, Azraq, 1963, S. Bisserot. PHOLIDOSIS. Scales around middle of body: 32. MEASUREMENTS. SV: 73 mm; tail: 80 mm. COLORATION. Dorsum brown, with three light longitudinal bands. No darker spots, except tiny ones on occiput. REMARKS. Of 4 specimens from the surroundings of Jerash (HUJ-R 1423, 1424, 1426, 1547; November 1945, Coll. Haas and Hoofien), 3 have 32 scales around the middle of the body, and one has 34. The largest of these measures 95 mm (SV). The pattern varies: one specimen resembles BM 1963.670, but another has 5 light bands, and two have 4, the median one being obliterated. The other 3 specimens have most dorsal scales partly edged in black (or dark brown), particularly towards the borders of the light bands. In Cisjordan, too, the pattern and colour of this species are highly variable (cf. Peracca, 1894 : 8). OPHIDIA COLUBRIDAE Natrix tessellata tessellata Laurent! Coronella tessellata Laurenti, 1768. Synops. Kept.: 87 ("in Japidia, vulgo Cars"). Natrix tessellata, Bonaparte, 1834. Iconogr. Faun. Ital., 2, n : plate. Natrix tessellata tessellata, (Hecht) 1930. Mitt. zool. Mus. Berlin, 16 : 319. MATERIAL EXAMINED (i). BM 1965.696 juv., Shishan (sandy area nr. date palms), 1965, S. Bisserot. PHOLIDOSIS. Scale rows: 19. Ventrals: 165. Subcaudals: 62. MEASUREMENTS. SV: 190 mm; tail: 45 mm. REMARKS. Three juveniles from Birketen near Jerash (HUJ-R 3024, 3063, 3071 ; November 1945, Coll. Haas and Hoofien) have 164-166 ventrals and 65-67 sub- caudals. In Cisjordan (N =9), similarly, 160-169 ventrals and 56-66 subcaudals have been counted. 244 Y. L. WERNER Coluber rhodorhachis rhodorhachis Jan (PI. 6 A, B) Zamenis rhodorhachis Jan, 1865. In De Filippi, Viagg. in Persia, p. 356 (Iran; restricted by Kramer and Schnurrenberger, 1963, p. 501, to Schiras, Central Persia.) Coluber rhodorhachis, Parker, 1931. Ann. Mag. Nat. Hist., (10), 8 : 516. Coluber rhodorhachis rhodorhachis, Khalaf, 1959. Reptiles of Iraq with some notes on the Amphibians, Baghdad, pp. 75-76. MATERIAL EXAMINED (i). BM 1965.805 $ Petra, 1965, D. Western. PHOLIDOSIS. Scale rows: 19. Ventrals: 242. Subcaudals: 133. MEASUREMENTS. SV: 790 mm; tail: 320 mm. COLORATION. Dark crossbands on anterior part of back (65-70) somewhat irregular, nearly four times as broad as the light intervening spaces. First dark crossband (on the occiput) interrupted mid-dorsally by a faint light vertebral line (PI. 6 A). REMARKS. This is apparently the first formal record of C. rhodorhachis from Transjordan proper. The range extension involved is only minor, as the species is well known in the Wadi 'Arava (Haas, 1951). Although this specimen was collected at Petra, and its pholidosis agrees with material from the adjacent territory of Cisjordan, its coloration deviates markedly from that found in these specimens. In Cisjordan the dark crossbands are usually distinctly narrower than the intervening light spaces (PI. 6 B), or at the most as broad as the latter. The same appears to be true of Egyptian specimens (Anderson, 1898: pi. 35). On the other hand, I have seen broad and close dark crossbands, like those of the Petra specimen, in an example from Iran (MCZ 58872), though in this case only the anterior 30-35 crossbands are so broad, the more posterior ones gradually become narrower. The similarity of these two specimens does not, however, mean very much, as the species exhibits high variability of colour and pattern. Terent'ev and Chernov (1949 : 242) accept C. r. ladacensis Anderson 1871 (Boulenger, 1890 : 326) as a distinct form. Mertens (1956 : 95) and Kramer and Schnurrenberger (1963 : 501) doubt its validity. In fact, Anderson himself (1895 : 654, footnote i) says "I am indebted to the Trustees of the Indian Museum for the opportunity of re-examining the types of Z. ladacensis. They are unquestionably identical with Jan's Z. rhodorhachis. At the time I described the species, Jan's work was not in the library of the Indian Museum, Calcutta". Thus, so far all Coluber rhodorhachis specimens, apart from the Somalian C. r. subnigra Boettger 1893 (Parker, 1949 : 30-37), are assignable to the typical form. Coluber rogersi Anderson (PI. 6 C, D) Zamenis rogersi Anderson, 1893. Ann. Mag. Nat. Hist. (6)12 : 439 (Desert to the east of Helwan, near Cairo). Coluber rogersi, Flower, 1933. Proc. Zool. Soc. London, p. 810-811. LIZARDS AND SNAKES FROM TRANSJORDAN 245 MATERIAL EXAMINED (2). BM 1965.698 $ Five km S of Aseikhim, April-May 1965, S. Bisserot. BM 1965.806 juv. $ (?) Azraq, 1965, D. Western. PHOLIDOSIS. Scale rows: 19; 19. Ventrals: 195; 204. Anals divided. Tails incomplete. MEASUREMENTS. SV: 565; 220 mm. (Tails incomplete.) COLORATION. In both specimens, the anterior three-quarters of body has about 55 dark, closely set, dorsal blotches (PI. 6 C). Posteriorly the blotches gradually become indistinct. The first three blotches are confluent mid-dorsally to form a longitudinal streak behind the occiput. Tail uniformly grey. REMARKS. The pattern resembles that normally encountered in (southern) Cisjordan (PI. 6 D), the blotches being closer to each other than those figured by Anderson (1898: pi. 36) for a male from "Beltim" (Nile delta). The scale count appears to be higher in Transjordan than in Cisjordan: Two specimens from 65 km SSE of Amman have 200 ventrals each (HUJ-R 3183/1 and 2) ; one from N of Zerka has 195. Thus while in Cisjordan we find 188-200 ventrals (N = 13), we find 195-204 (N = 5) in Transjordan. A single specimen from Iraq has 206 (HUJ-R 3540). Malpolon moilensis Reuss Coluber moilensis Reuss, 1834. Mus. Senckenb. i, p. 142 (near Moila, on the Red Sea coast of Arabia) . Malpolon moilensis, Parker, 1931. Ann. Mag. Nat. Hist. (10) 8 : 522. MATERIAL EXAMINED (i). BM 1965.697 <$ (?). Three miles N of Druze (Track through hamada), April-May 1965, S. Bisserot. PHOLIDOSIS. Scale rows: 17. Ventrals: 166. Anal divided. Subcaudals: 50. MEASUREMENTS. SV: 443 mm; tail: 95 mm. COLORATION (After preservation). Brown with darker brown spots, of varying distinctness, which are arranged in eight longitudinal rows. Neighbouring spots tend to merge, forming obliquely transverse streaks. A conspicuous dark brown blotch is present on each temporal region. REMARKS. This appears to be the first record of this snake from Transjordan. The species has recently been recorded from southern Cisjordan, where it is rare (Barash & Hoofien, 1956). Most, if not all, specimens were actually found in the Wadi 'Arava, so that the inclusion of this species in the fauna of Transjordan would have been a matter of course. The locality recorded here, however, constitutes a significant range extension. Malpolon monspessulanus insignitus Geoffroy Coluber insignitus Geoflroy in Savignyi, 1827. Descr. Egypte., Hist, nat., i Rept. : 151; pi. 7, Fig. 6 (Lower Egypt). Malpolon monspessulanus insignitus, Mertens and Miiller, 1928, Abh. senckenberg. naturf. Ges., Frankfurt a.M., 41 : 51. 246 Y. L. WERNER MATERIAL EXAMINED (i). BM 1965.807 <$ Azraq, 1965, D. Western. PHOLIDOSIS. Scale rows: 19. Ventrals: 173. Anal divided. Subcaudals: 83. MEASUREMENTS. SV: 745 mm. Tail: 210 mm. COLORATION (After preservation). Nearly uniform dark grey. Belly whitish with some light grey mottling. DISCUSSION The material reported here does not on its own permit an analysis of the herpeto- fauna of Trans Jordan in terms of ecology or zoogeography. However, the specimens have been assembled on several trips, so that at least the lizard material probably reflects to some extent the abundance of the species in certain habitats and localities. It thus seems profitable to relate the data available to existing general information on the ecological and biogeographical subdivision of Trans Jordan and to the known circumstances in Cisjordan. General Biogeography of Trans Jordan The variegated zoogeography of Transjordan was outlined by Bodenheimer (1935 : 24). His basically correct map (1935: Fig. 6) was superseded by the more recent work of botanists (Bodenheimer, 1953 : 85). Feinbrun and Zohary prepared a phytogeographical map (1955 : 15) dividing Transjordan into the same three territories, Mediterranean, Irano-Turanian, and Saharo-Sindian, into which Cis- jordan is also divided (Zohary, 1955). This division, based on the mapping of plant associations (Feinbrun and Zohary, 1955 : folding map), is related to the distribution of soil types and, more closely, to that of rainfall (maps, Feinbrun and Zohary, 1955 : 9 and 13; Poore and Robertson, 1964 : 12; Bender, 1968 : 10 and 180). The phyto- geographical map of Feinbrun and Zohary (1955 : 15) furnished the basis for the delimitation of biogeographical territories in Text-fig. 8. (A fourth territory, the 'Sudanian Penetration Territory', has been proposed for the Lower Jordan Valley and the Wadi 'Arava by Gruenberg-Fertig, 1965). The general ranges of the three biogeographical territories in southwestern Asia are presented by a map recently published elsewhere (Haas and Werner, 1969 : 368). Poore and Robertson (1964 : 14-15) similarly classified the Transjordanian range types into three basic regions : Mediterranean, Steppe, and Desert of varying type (limestone, basalt, sandstone and granite deserts). The salient differences between the two maps are few : The Mediterranean region of Poore and Robertson is narrower (in W-E direction) than that of Feinbrun and Zohary (shown here in Text-fig. 8) so that for instance, Petra, Tafila and Shaubak are excluded from it (the first lying just west of, the two last, just east of, Poore and Robertson's Mediterranean region). The Steppe region of Poore and Robertson, roughly coinciding in the south with Feinbrun and Zohary's Irano-Turanian territory, reaches in the north eastwards to only halfway between Amman and Azraq. (Guest (1966: Figs 13, 14) apparently includes the area around, and east of, Azraq, in the Irano-Turanian, in agreement LIZARDS AND SNAKES FROM TRANSJORDAN 247 FIG. 8. The biogeography of Transjordan, based on Feinbrun and Zohary (1955). The 100 mm mean annual precipitation line is based on Poore and Robertson (1963) ; its inter- rupted part (extrapolated alternatives in area lacking data) is based on various sources. M, Mediterranean; IT, Irano-Turanian ; SS, Saharo-Sindian. 248 Y. L. WERNER with Feinbrun and Zohary.) At the latitude of the Dead Sea Poore and Robertson's Steppe region has a south-eastern extension (as compared to Feinbrun and Zohary's Irano-Turanian territory) so as to include El Qatrane. The desert regions of Poore and Robertson include areas excluded from Feinbrun and Zohary's Saharo-Sindian territory. Firstly, the district around, and east of, Azraq ; secondly, a broader zone in the Jordan Valley and especially in its northern part. Thus, Salt (NW of Amman) and Petra are well within the Mediterranean territory of Feinbrun and Zohary, but on the fringe of the desert according to Poore and Robertson. The bioclimates of Transjordan have been defined and mapped by Long (1957; also in Poore and Robertson, 1964 : 10, and 13). His map corresponds closely to the two biogeographical maps just discussed; concerning the district surrounding, and east of, Azraq, it is intermediate between them. The climates of the Mediterranean territory are "sub-humid and semi-arid mediterranean bioclimates"; those of the Irano-Turanian (~ Steppe) territory are "arid mediterranean bioclimates"; and the Saharo-Sindian (~ desert) territory has "saharan mediterranean bioclimates". Among the latter, the "cool variety" characterizes the Azraq district. Long's map differs from the phytogeographical maps chiefly in that his "semi-arid mediterranean bioclimate" (~ Mediterranean territory) reaches southwards only to a point between Shaubak and Petra. However, this difference may conceivably result from the paucity of meteorological information available to Long (Poore and Robertson, 1964 : n). Thus Transjordan comprises three gross ecological, hence biogeographical terri- tories. Relying on the sources cited, these may be briefly characterized as follows : The Mediterranean territory includes the hills of Gilead and the western parts of Ammon, Moab and N Edom. In the south this narrow territory is confined to the higher hills, and interrupted between them. Predominant soils are terra-rossa, white Cenomanian soil and grey Senonian soil; along the Jordan Valley, areas of Nubian sandstone are included. The bioclimate conforms in the main to the semi- arid mediterranean type. Annual rainfall varies from about 700 mm on northern mountaintops down to ca. 300, and even below 200, south of Petra. Vegetation is characterized by a climax of Mediterranean Maquis and forest types, and by areas covered with various shrubs, including many Labiatae. The Irano-Turanian territory surrounds the Mediterranean territory except in the north (where the latter continues into Syria and Lebanon). Above latitude 31 30' N the otherwise narrow zone widens eastwards, extending to at least halfway between Amman and Azraq, possibly to the frontier. The commonest soils are loess and grey calcareous steppe soils (Basalt from Azraq to Burqu). The bioclimate is of the arid mediterranean types (of the saharan mediterranean type, cool variety, around Azraq) ; annual rainfall is between ca. 350 mm and ca. 100 mm. Vegetation is typically a steppe of dwarf -shrubs (Artemisia herba-alba is prominent) or of herbs (e.g. Poa sinica and Car ex pachystylis) , and includes remnants of a Pistacia atlantica forest. The Saharo-Sindian territory occupies the vast southern and eastern desert of Transjordan, as well as the lower parts of the Rift Valley. The greatest part, north of latitude 29 40' N, is characterized by lime-stone hamadas, the ground generally LIZARDS AND SNAKES FROM TRANSJORDAN 249 being covered by a layer of flints. Further south, and in the Rift Valley, Nubian sandstone and sand predominate, with an area of granite (rock and sand) in the Wadi 'Arava. A vast basalt desert, from Azraq to Burqu, is largely covered by basalt boulders of varying size. The bioclimates are of the Saharan Mediterranean types. Rainfall is normally below 150 mm, in the extreme southeast below 50 mm. Vegeta- tion is scanty except in the wadis. Associations of Anabasis articulata are promi- nent, and on granite sands Haloxylon spp. Distribution of Reptiles This discussion is limited to the 23 species and subspecies reported here. Among these, 16 occur also in Cisjordan. Two ubiquitous species were collected in all three regions of Transjordan (and similarly occur in all parts of Cisjordan) : Hemidactylus turcicus and Chalcides o. ocellatus. These have an essentially circum-mediterranean distribution, which is particularly broad to the south and east. Agama stellio is similarly circum-eastern-mediterranean, but unfortunately its infraspecific taxonomy is not clear. Four forms occur in Cisjordan as Mediterranean elements: Chamaeleo chamaeleon recticrista, Mabuya vittata, Natrix t. tessellata and Malpolon m. insignitus. The first three are here reported from the Mediterranean territory of Transjordan; Mabuya vittata and Natrix t. tessellata were also found at Azraq or at the neighbouring Shishan (within the disputed area belonging to either the Irano-Turanian or Saharo- Sindian territory). Malpolon m. insignitus is reported from Azraq. This distribu- tion is probably due to the local conditions prevailing at these places. N. t. tessellata is semiaquatic; M. vittata is facultatively hydrophilic, and lives, e.g., also among reeds surrounding the salt marshes south of the Dead Sea (pers. obs.). Seven reptiles typical of Cisjordanian desert habitats were collected in the Irano- Turanian and Saharo-Sindian areas of Transjordan: Agama sinaita, Acanthodactylus b. asper, Eremias g. gutulata, Eumeces s. schneideri, Coluber rhodorhachis, C. rogersi, and Malpolon moilensis. We shall consider first the two Coluber species. All of 4 localities for Coluber rogersi fall within the Irano-Turanian (according to Feinbrun and Zohary; but 2 within the desert according to Poore and Robertson.). In Cis- jordan this snake occupies both the Irano-Turanian and Saharo-Sindian territories, with the exception of the (hot) Wadi 'Arava. Its world distribution is Saharo- Sindian and to some extent, Irano-Turanian. C. rhodorhachis occurs in Cisjordan mainly in the Saharo-Sindian territory (Wadi 'Arava and southern Negev), and the first and only record for Transjordan is from Petra, on the fringe of the Wadi 'Arava. Its world distribution is Irano-Turanian and Saharo-Sindian. The two lacertids, A. b. asper and E. g. guttulata, are reported from both Irano-Turanian and Saharo- Sindian localities in Transjordan. Similarly, they are known in Cisjordan from suitable habitats throughout the Negev. Their world distribution is Saharo- Sindian. The remaining forms, Agama sinaita, Eumeces s. schneideri and Malpolon moilensis, were taken in Transjordan at more or less desertic localities (at least according to Poore and Robertson). In Cisjordan these are restricted to the Saharo-Sindian part of the Negev, and their world distribution is Saharo-Sindian. 250 Y. L. WERNER The ranges of the two forms of Ptyodactylus apparently fail to coincide with any of the ecological territories described above. P. h. puiseuxi, a morphologically well denned form, is common in northernmost Cis Jordan and in Trans Jordan, on the hills bordering Lake Tiberias on the east, and around Jerash all in the mediterranean territory but is here reported also from the fringe of the basalt desert ca. lokm E of Azraq (Wadi Aseikhim). It may eventually turn out to be basically a form inhabiting basalt rocks, which has spread to adjacent habitats. P. h. guttatus is less well defined and in particular not clearly distinguishable from P. h. hasselquistii. Geckos currently assigned to guttatus are common in the Mediterranean, Irano- Turanian and Saharo-Sindian territories of Cisjordan in effect throughout the country excepting its northern and southern extremes. So far, our records for Transjordan are all within the (southwestern) Saharo-Sindian (Rum; S of Guweira) or on its rim (Petra; Wadi Musa). Evidently the ranges of these two geckos are influenced to a great extent by factors other than the climate, perhaps because they can modify their exposure to it by varying the relative duration of nocturnal and diurnal activity. Of the Transjordanian reptiles reported here, seven forms do not occur in Cisjordan. Of these, six are apparently Irano-Turanian elements, as far as their general ranges are concerned: Agama p. haasi, Acanthodactylus grandis, A. t. tristrami, Eremias b. microlepis, Ophisops e. blanfordi, and Eumeces s. princeps. In Transjordan, A. p. haasi has been collected mostly within the Irano-Turanian, but also within the Saharo-Sindian. In Cisjordan, A. p. pallida similarly occurs in both territories. A. grandis has been collected in the Irano-Turanian and Saharo-Sindian, and A. t. tristrami in the Irano-Turanian and Mediterranean. Some of the localities for E. b. microlepis are within the Irano-Turanian, the rest within the Saharo-Sindian. These three lacertids have no conspecific relations in Cisjordan. 0. e. blanfordi has been collected within the Irano-Turanian and on both its mesic and desertic borders. The related 0. e. ehrenbergi occurs in the Mediterranean and Irano-Turanian of Cisjordan, and also in the Mediterranean of Transjordan (around Jerash). The case of ". s. princeps is of particular interest since three distinct, apparently allopatric, races of E. schneideri occur in Transjordan and adjacent areas (Mertens, 1920, 1924, 1946; Taylor, 1935 ; Eiselt, 1940). Both localities reported here for E. s. princeps are within the Irano-Turanian, and this agrees with this race's general distribution. In the Saharo-Sindian of both Cis- and Transjordan E. s. schneideri occurs, while E. s. pavimentatus lives in the Mediterranean of Cisjordan. Its occurrence in Transjordan, which is probable, remains to be shown. The last of the Transjordanian reptiles not occurring in Cisjordan is Agama blanfordi fieldi (A. persica fieldi Haas and Werner, 1969). This obviously is a Saharo-Sindian, Arabian, form. Its taxonomic relationship with the superficially similar psammophile, A. savignii of eastern Egypt, Sinai and southern Cisjordan, has not been studied but the two probably occupy comparable ecological niches. In conclusion, the locality data presented here for Transjordanian lizards and snakes are in good agreement with a generalized subdivision of Transjordan into three major ecological-biogeographical territories, based on both the maps of Fein- brun and Zohary (1955 : 15) and Poore and Robertson (1964 : 14-15). The species LIZARDS AND SNAKES FROM TRANSJORDAN 251 of the Mediterranean territory exhibit no marked morphological deviations from their conspecific counterparts in the Mediterranean of Cisjordan. On the other hand, in several species of desert reptiles (Saharo-Sindian or Saharo-Sindian and Irano- Turanian), the Transjordan population appears to differ from the Cisjordanian one. Furthermore, one Saharo-Sindian species, Agama Uanfordi, does not occur west of the Rift Valley. Conspicuous is the occurrence in Transjordan of six Irano- Turanian species, of which three do not occur in Cisjordan, while the remaining three are represented there by other (well defined) subspecies (see also Haas, 1952). The reciprocal phenomenon also exists as not all Cisjordanian reptiles occur in Trans- Jordan. Thus among the Saharan psammophile reptiles of southern Cisjordan, five occur only west of the Rift Valley. Another species, Sphenops sepsoides, penetrates into the Rift Valley (Werner, 1968), and only one other, Acanthodactylus scutellatus scutellatus, is represented east of the Rift Valley by another subspecies, A. s. hardyi (northwestern Saudi Arabia Haas, 1957; Iraq Haas and Werner, 1969). It is tempting to assume that the Wadi 'Arava, together with the very steep mountain slopes bordering it on the east, constitutes a barrier to the distribution of reptiles, though more direct evidence on this effect would be desirable. ACKNOWLEDGEMENTS For the privilege of examining this material I am grateful to A. G. C. Grandison, British Museum (Nat. Hist.). I am much obliged to S. Bisserot who kindly presented his field notes for inclusion in this report; to D. Western for his cooperation and stimulating correspondence; and to K. Klemmer, Senckenberg Museum, who most helpfully supplied information on the type of Agama pallida Reuss, photographs of it, and a copy of its description. I wish to thank S. Furman and N. Shulman for assistance in examining specimens; E. Alcalay and T. Sheffer for help in preparing the diagrams and maps; E. Haupt for the photographs of Agama pallida Reuss (type) ; E. Ben-Hur and A. B. Niv for the other photographs; and my wife, Nurit, for both advising me on statistics and performing the calculations. I am indebted to E. N. Arnold, British Museum (Nat. Hist.), G. Haas and, particularly, to J. H. Hoofien, for their painstaking and instructive comments on the text and illustrations, most of which I heeded. APPENDIX LIST OF LIZARDS AND SNAKES SO FAR RECORDED FROM TRANSJORDAN (INCL. WADI 'ARAVA) The documentation cited in parentheses, for species not represented in this report, is not necessarily the earliest one available. The names listed are not necessarily those employed for the same taxa by the authors cited. 252 Y. L. WERNER LACERTILIA GEKKONIDAE 1. Bunopus blanfordii Strauch (Barash and Hoofien, 1956) 2. Ceramodactylus doriae Blanford (Haas, 1956) 3. Hemidactylus turcicus turcicus L. 4. Pristurus flavipunctatus guweirensis Haas (Haas, 1951) 5. Ptyodactylus hasselquistii guttatus von Heyden 6. Ptyodactylus hasselquistii puiseuxi Boutan 7. Stenodactylus grandiceps Haas (Haas, 1951) 8. Stenodactylus sthenodactylus sthenodactylus Lichtenstein (Haas, 1951) 9. Tropiocolotes steudneri Peters (Haas, 1951) AGAMIDAE 10. Agama blanfordi fieldi Haas and Werner 11. Agama pallida haasi Werner 12. Agama sinaita von Heyden 13. Agama stellio brachydactyla Haas 14. Agama stellio picea Parker (Haas, 1951) 15. Agama stellio stellio L. (Daan, 1967) CHAMAELEONIDAE 16. Chamaeleo chamaeleon recticrista Boettger LACERTIDAE 17. Acanthodactylus boskianus asper Audouin 18. Acanthodactylus cantoris schmidti Haas (Hoofien, 1965) 19. Acanthodactylus grandis Boulenger 20. Acanthodactylus robustus Werner (Haas, 1951) 21. Acanthodactylus tristrami tristrami Giinther 22. Eremias brevirostris microlepis Angel 23. Eremias guttulata guttulata Lichtenstein 24. Eremias guttulata watsonana Stoliczka? (Wettstein, 1951) 25. Eremias olivieri schmidti Haas, (Haas 1951) 26. Lacerta danfordi danfordi Giinther (Hoofien, 1969) 27. Ophisops elegans blanfordi Schmidt 28. Ophisops elegans ehrenbergi Wiegmann (Haas, 1951) 29. Ophisops elegans elegans Menetrie's (Schmidt, 1939) SCINCIDAE 30. Ablepharus kitaibelii Bibron et Bory (Haas, 1951) 31. Chalcides ocellatus ocellatus Forskal 32. Eumeces schneideri princeps Eichwald LIZARDS AND SNAKES FROM TRANSJORDAN 253 33. Eumeces schneideri schneideri Daudin 34. Mabuya vittata Olivier 35. Ophiomorus latastii Boulenger (Anderson & Leviton, 1966) 36. Scincus sp. (Haas, 1951) 37. Sphenops sepsoides Audouin (Werner, 1968) ANGUIDAE 38. Ophisaurus apodus Pallas (Haas, 1951) VARANIDAE 39. Varanus griseus griseus Daudin (Haas, 1951) OPHIDIA LEPTOTYPHLOPIDAE 40. Leptotyphlops phillipsi Barbour (Haas, 1951) COLUBRIDAE 41. Coluber jugularis jugularis L. (Haas, 1951) 42. Coluber najadum Eichwald (Haas, 1951) 43. Coluber ravergieri nummifer Reuss (Flower, 1933) 44. Coluber rhodorhachis Jan 45. Coluber rogersi Anderson 46. Eirenis collaris Me'ne'trie's (Haas, 1951) 47. Eirenis coronella coronella Schlegel (Schmidt, 1939) 48. Eirenis coronella fraseri Schmidt (Haas, 1951) 49. Eirenis decemlineata Dumeril & Bibron (Haas, 1951) 50. Eirenis rothi Jan (Haas, 1951) 51. Malpolon moilensis Reuss 52. Malpolon monspessulanus insignitus Geoffroy 53. Natrix tessellata tessellata Laurenti 54. Psammophis schokari Forskal (Haas, 1951) 55. Rhynchocalamus melanocephalus Jan (Hart, 1891) 56. Spalerosophis diadema ssp. (Haas, 1951) 57. Tarbophis nigriceps Ahl (Haas, 1951) VIPERIDAE 58. Cerastes cerastes L. (Haas, 1951) 59. Echis colorata Gunther (Haas, 1951) 60. Pseudocerastes fieldi Schmidt (Haas, 1951) 254 Y. L. WERNER REFERENCES ANDERSON, J. 1895. On a collection of reptiles and batrachians made by Colonel Yerbury at Aden and its neighbourhood. Proc. zool. Soc. Lond. 1895 : 635-664. - 1896. A contribution to the herpetology of Arabia. With a preliminary list of the reptiles and batrachians of Egypt. R. H. Porter, London, 122 pp. 1898. Zoology of Egypt. Vol. i, Reptilia and Batrachia. Quaritch, London, LXV + 37i PP- ANDERSON, S. C. ig66a. A substitute name for Agama persica Blanford. Herpetologica, 22 (3) : 230. I966b. The lectotype of Agama isolepis Boulenger. 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Herpetological collection trips to the Lebanon 1965 and 1966. Israel J. Zool., 16 (i) : 49-58. ZOHARY, M. 1955. Geobotany. Hakibutz Ha'artzi, Merhavia, XVI + 590 pp. (In Hebrew). REFERENCES TO APPENDIX ANDERSON, S. C. & LEVITON, A. E. 1966. A review of the genus Ophiomorus (Sauria: Scincidae), with descriptions of three new forms. Proc. Calif. Acad. Sci., Ser. 4, 33 (16) : 499-534- HAAS, G. 1956. On the occurence of Stenodactylus petrii and Stenodactylus (Ceramodactylus) doriae in southern Israel. Bull. Res. Coun. Israel, 5B (3-4) : 308-309. HART, H. C. 1891. Some account of the fauna and flora of Sinai, Petra, and Wddi 'Arabah. Watt, London, X + 255 pp., folding map. Dr. Y. L. WERNER Department of Zoology HEBREW UNIVERSITY OF JERUSALEM JERUSALEM, ISRAEL PLATE i Agama pallida subspp. : (A-D) A. p. haasi subsp. nov. : (A) Holotype^, BM 1965.800, dorsal view; (B) Same, left ear; (C) Juvenile, BM 1965.797, right ear; (D) Paratype $, HUJ-R 1884. (E-F) A. p. pallida Reuss : (E) From southern Cisjordan (Wadi Ajram) <$, HUJ-R 1623; (F) From eastern Egypt (Kassassin) $, HUJ-R 1126. Scale, cm and mm (D-F at same magnification). Bull. Br. Mus. nat. Hist. (Zool.) 21,6 PLATE i 0123 CH & 8 L PLATE 2 Agama pallida pallida Reuss holotype $, SMF 10007: (A) Dorsal view; (B) Head. Bull. Br. Mus. not. Hist. (Zool.) 21, 6 PLATE 2 PLATE 3 (A) Agama blanfordi fieldi $ , BM 1965.686. (B-E) Agama sinaita: (B) Dorsal view of left pes, and (C) of base of tail, of ^ from northern Transjordan (Wadi Ratam), BM 1965.685; (D) Dorsal view of left pes of $ from southern Cisjordan, HUJ-R 1919; (E) Dorsal view of tail base of <$ from southern Cisjordan, HUJ-R 1794. Scale, cm and mm (B-E at same magnification). Bull. Br. Mus. nat. Hist. (Zool.) 21,6 PLATE 3 PLATE (A-B) Acanthodactylus grandis : (A) Adult $ from Tell el Mukheizin, BM 1965.694; (B) Young $ from Ain el Enoquiyya, BM 1965.692. (C-D) Acanthodactylus tristrami tristrami : (C) $ from the Jordanian-Syrian border, BM 1962.352; (D) 3 1 from 15 Km S of Amman, HUJ-R 1333. Scale, cm and mm (all at same magnification). Bull. Br. Mus. nat. Hist. (Zool.) 21,6 PLATE 4 PLATE 5 Eumeces schneideri subspp. : (A) E. s. schneideri