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

230 COLLECTIONS FROM MELANESIA.smaller specimens from the Arafura Sea, 32-36 fms. (No. 160). luthese latter the carapace is more convex and the spines at the postei-o-lateralangles of the carapace less developed. Althoughsmaller, most of these are adult, since among tliem are femaleswith ova.There are besides in the British-Museum collection a female fromthe Indian Ocean {Gen. Hardwiche), several specimens from HongKong {Dr. W. A. Harland), and others, without definite locality,from the collections of H.M.SS. Herald' and Samarang.'' '68. Achelous granulatus {M.-Edw.). (Plate XXIII,fig. B, var.)A male of this common and widely distributed species is in thecollection from Fiiday Island, Torres Straits, 13 fms. (No. 153). Anenumeration of the localities whence the Museiim possesses specimensis given in my Heport on the Crustacea collected at Rodriguezby the naturalists of the British Transit-of-Venus Expedition*, towhich should be added the following :—Seychelles (Dr. E. PercevalWrir/Jit), and Loyalty Islands, Lifu {Rev. S. J. Whitmee). It isrecorded by Mr. Haswell from Palm Island (as Amphitrite gladiator).A specimen from Prince of Wales Channel, 7 fms. (No. 169),differs from all the specimens of A. granulatus that I have examinedin wanting the submedian spine of the posterior margin of the armof the chelipedes (see Plate XXIII. fig. B) ;it may be designated vat..unisjiinosus. The carapace is less granulated and the teeth of theantero-lateral margins less produced and spiniform than is usual inthis species, and much less so than in the specimen from FridayIsland.69. Thalamita admete {Herhst).Here are referred a small female from Port Molle, 5-12 fms.(No. 118), in the first collection, and another from Port Jackson,5 fms., and five males (adult and young) found on a coral-reef atClairmont Islands, N.E. coast of Australia (No. 151), in the secondcollection.In the smaller examples of this species the minute rudimentaryfourth tooth of the antero-lateral margins is occasionally deficient,as has been noted by A. Milne-Edwards in Thalamita savignyi.Specimens are in the British-Museum collection from ConwayEeef {H.M.S. 'Herald'), and also from the Fiji Islands {H.M.S.*Herald'), Samoa Islands {Rev. S. J. Whitmee), and SandwichIslands (W. H. Pease).I regard the Thalamita savignyi of Prof. A. Milne-Edwards f asprobably merely a variety of Th. admete, Herbst. Specimens apparentlyreferable to this variety are in the British-Museum collectionfrom the Gulf of Suez {R. MacAndrew) and Nicol Bay, N.W. Aus-* Phil. Trans, clxviii. p. 488 (1879).t Arch, du Mus. d'Hist. Nat. x. p. 357 (1861).