Report on the zoological collections made in the Indo-Pacific Ocean ...

CEITSTACEA. 563cannot be given ; but it is somewhat smaller than adult P. tridamcp.The chelipede of the second pair measures about 7 lines (15 millim.).Two specimens, of which one is an adult female with ova, wereobtained at the Sej-chelles (12 fms,), where they inhabited " clampshells " (bivalves ?).They arc distinguished from all the species with which I amacquainted, excei)t P. imidens, Kingsley, by the extremely shortrostrum, which is not laterally compressed, and from all by the formof the chelipcdes of the second pair. From the species of Coralllocaris,Stm. {(Edipus, Dana), they are distinguished, among othercharacters, by the form of the dactyli of the ambulatory legs.In P. unidens, Kingsley, from Florida*, not only is the form ofthe chelipedes different, but also the antcnnal scale is shorter, reachingonly to the end of the last joint of the peduncle.6, Coralliocaris graminea {Dana).Four specimens, of which two are adult females with ova, wereobtained at the Seychelles, 4-12 fms. (iS^o. 194). Specimens fromthe same locality were presented to the Museum by Dr. E. P.Wright.These specimens agree with the description of Dana in all particularsexcept that no trace remains of the characteristic markingsof the carapace, the coloration in spirit being yellowish ; and themargins of the rostrum above the eyes are slightly convexly arcuated; the tooth on the inferior margin of the rostrum, or one ofthe teeth of the superior margin, is occasionally absent.Dana's specimens were from the Fijis. Dr. Stimpson recordsthis species from Hong Kong.Coralliocaris nndirostris (Heller), from the Red Sea, may possiblybe identical with this species ; but in the figure the dactyli of thechelipedes are of very different form (cf. Heller in Sitz. Wien.Akad. xliv. (1) p. 279, pi. iii. fig. 25, 1862).7. Penseus canaliculatus, Olivier.A small specimen, I think a male, was obtained at Poivi'c Island,on the beach (No. 198).Since reference was made to this species in my memoir on thegenus, in 1878t, specimens have been added to the collection fromRichmond River, N. S. Wales (A. P. Goodwin) ; there is also in theMuseum collection a small example, in bad condition, from SwanRiver (Drimj).Penmis hrevirostris, Kingsley i, is very nearly allied to, and maybe identical with, this species, but it has two teethon the inferior* Proc. Acad. Nat. Sci. Philad. p. 422, pi. xiv. fig. 9 (1879).t Proc. Zool. Soc. p. 298 (1878).i Proc. Acad. Nat. Sci. Philad. p. 98 (1878).2o2