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

;;CRUSTACEA. 189frontal lobes very small and subacute. On the cardiac region is abilobated prominence, which is usually very much elevated ; thereis a small angulated prominence on the hepatic regions, and occasionallyone or two granules on the branchial regions, which arenot at all convex. Eye-peduncles with a blunt tubercle in themiddle of their anterior margins. The merus-joints of the outermaxillipedes are narrowed and subacute at their distal ends wherethey are articulated with the next joints. The chelipedes (in bothsexes) are rather slender ; margins of the arm, wrist, and palmusually with a few granules or spinules ; merus somewhat trigonous ;fingers as long as the palm, and somewhat incurved, with their innermargins denticulated, and having between them when closed (in themales) a small hiatus at base. The ambulatory legs are slender,filiform, and very much elongated, the second legs being, in an adultmale, four times as long as the postfrontal portion of the carapacethe dactyli of the two posterior pairs only are distinctly falciform ;both chelipedes and ambulatory legs are scantily clothed with longhairs. Length of carapace (including rostrum) of an adult maleabout 5 lines (10-5 millim.), breadth about 3 lines (6 millim.) ;length of second leg about 1 inch 8 lines (42 millim.) : an adultfemale has the carapace relatively somewhat broader, length nearly5| lines (12 millim.), breadth 4 lines {S'o millim.).The bilobated promiueuce on the cardiac region and tuberculatede^e-peduncles serve to distinguish this species. The cardiac prominenceis much more elevated in the females than in the males in theMuseum Collection.There is an adult male of this species in the first collection receivedfrom Dr. Coppinger, obtained at Port Denison, Queensland, at adepth 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. liayner^H.M.S. Herald ' ') ; and other Australian specimens without specialindication of locality in the Museum collection.In the second consignment made by Dr. Coppinger were an adultmale 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, Latreille.Several females are retained for the British-Museum collectionfrom Thursday Island, 3-4 fms. (Nos. 175-177). It is recorded byMr. Haswell from Cape Grenville and Port Denison. Specimensare in the British-Museum collection from Shark Bay, W. Australia{F. M. Baijner, H.M.S. Herald '').There are also specimens in the Museum collection from thePhilippine Islands, Guimaras and Bureas(CMmi?ir/), and Pijis, Ngau{H.M.S. Herald ' ') ; also specimens from the Mauritius {Ladij F.Cole) are probably not distinct, but are much covered with foreignovergrowth. Thus it is widely distributed throughout the OrientalRegion.