230 COILECTIONS FEOM MELANESIA. 



Emaller specimens from the Arafura Sea, 32-36 fms. (No. 160). In 

 these latter the carapace is more convex and the spines at the pos- 

 tero-lateral angles of the carapace less developed. Although 

 smaller, most of these are adult, since among them are females 

 with ova. 



There are besides in the British-Museum collection a female from 

 the Indian Ocean (Gen. Eardwielce), several specimens from Hong 

 Kong (Dr. W. A. Harland), and others, vidthout 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 the 

 collection from Priday Island, Torres Straits, 13 fms. (No. 153). An 

 enumeration of tlie localities whence the Museum possesses speci- 

 mens is given in my Eeport on the Crustacea collected at Eodriguez 

 by the naturalists of the British Transit-of- Venus Expedition*, to 

 which should be added the following : — Seychelles {Dr. E. Perceval 

 Wright), and Loyalty Islands, Lifu {Bev. 8. J. Whitmee). It is 

 recorded by Mr. Haswell from Pabn Island (as Amphitrite gla- 

 diator). 



A specimen from Prince of Wales Channel, 7 fms. (No. 169), 

 differs from all the specimens of A. granulatus that I have examined 

 in wanting the submedian spine of the posterior margin of the arm 

 of the chelipedes (see Plate XXIII. fig. B) ; it may be designated var. 

 wnispinosus. The carapace is less granulated and the teeth of the 

 antero-lateral margins less produced and spiniform than is usual in 

 this species, and much less so than in the specimen from Friday 

 Island. 



69. Thalamita admete (Herbst). 



Here are referred a small female from Port MoUe, 5^12 fms. 

 (No. 118), in the first collection, and another from Port Jackson, 

 5 fms., and five males (adult and j-oung) found on a coral-reef at 

 Clairmont Islands, N.E. coast of Australia (No. 151), in the second 

 collection. 



In the smaller examples of this species the minute rudimentary 

 fourth 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 Conway 

 Beef {H.M.S. 'Berald'), and also from the Fiji Islands (^R.M.S. 

 ' Herald '), Samoa Islands (Eev. S. J. Whitmee), and Sandwich 

 Islands (TT. H. Pease). 



I regard the Thalamita savignyi of Prof. A. Milne-Edwards t as 

 probably merely a variety of Th. admete, Herbst. Specimens appa- 

 rently referable to this variety are in the British-Museum collection 

 from the Gulf of Suez (B. MacAndrew) and Nicol Bay, N.W. Aus- 



* Phil. Trans, clxviii. p. 488 (1879). 



t Arch, du Mus. d'Hist. Nat. i. p. 357 (1861). 



