CRUSTACEA. 189 



frontal lobes very small and subacute. On the cardiac region is a 

 bilobated prominence, which is usually very much elevated ; there 

 is a small angulated prominence on the hepatic regions, and occa- 

 sionally one or two granules on tho branchial regions, which are 

 not at all convox. Eye-peduncles with a blunt tubercle in the 

 mid lie of their anterior margins. The nierus- joints of the outer 

 maxillipedes are narrowed and subacute at their distal ends where 

 they are articulated with the next joints. The chelipedes (in both 

 sexes) arc rather slender; margins of the arm, wrist, and palm 

 usually with a few granules or spinules ; merus somewhat trigonous ; 

 fingers as long as the palm, and somewhat incurved, with their inner 

 margins denticulated, and having between them when closed (in the 

 males) a small hiatus at base. The ambulatory legs aro slender, 

 filiform, and very much elongated, the second legs being, in an adult 

 male, four times as long as the postfrontal portion of the carapace ; 

 the dactyli of the two posterior pairs only are distinctly falciform ; 

 both chelipedes and ambulatory legs are scantily clothed with long 

 hairs. Length of carapace (including rostrum) of an adidt male 

 about 5 lines (10-5 millim.), breadth about 3 lines (6 millim.) ; 

 length of second leg about 1 inch S lines (42 millim.): an adult 

 female has the carapace relatively somewhat broader, length nearly 

 5| lines (12 millim.), breadth 4 lines {H-o millim.). 



The bilobated prominence on tho cardiac region and tubcrculated 

 eye-peduncles serve to distinguish this species. The cardiac promi- 

 nence is much more elevated in the females than in the males in the 

 Museum Collection. 



There is an adult male of this species in the first collection received 

 from Dr. Coppinger, obtained at Port Denison, Queensland, at a 

 depth of 4 fms. (No. Ill) ; also an adult female from Port Jackson, 

 5-7 fms. (No. 104), and one from Moreton Bay, Queensland 

 (Warwick) ; one from Shark Bay, West Australia (F. M. Rayner, 

 H.M.S. ' Herald ') ; and other Australian specimens without special 

 indication of locality in the Museum collection. 



In the second consignment made by Dr. Coppinger were an adult 

 male and two females from Thursday Island, 3-4 fms. (No. 177) ; 

 and a female from Prince of Wales Channel, 7-9 fms. 



3. Camposcia retusa, LatreiUe. 



Several females are retained for the British-Museum collection 

 from Thursday Island, 3-4 fms. (Nos. 175-177). It is recorded by 

 Mr. Haswell from Cape Grenville and Port Denison. Specimens 

 are in the British-Museum collection from Shark Bav, W. Australia 

 (F. M. Rayner, H.M.S. ' Herald '). 



There are also specimens in the Museum collection from the 

 Philippine Islands, (iuimaras and Bureas(Cw.mi>i(7), and Pijis, Ngau 

 (H.M.S. ' Herald ') ; also specimens from the Mauritius (Lad;/ F. 

 Cole) are probably not distinct, but are much covered with foreign 

 overgrowth. Thus it is widely distributed throughout the Oriental 

 Begion. 



