160 Bulletin Vanderhilt Marine Museum, Vol. V 



Sumatra, (Pesta) ; Port Darwin and Port Dennison, Australia, (Has- 

 well) ; Moreton Bay, West Hill, Queensland, Duke of York Island, 

 Admiralty Group; Darros Island; Glorioso Island, Tamatave; Fiji 

 Islands; Samoan Islands; Malaysia; Bengal, India; Canton River, 

 China, (Miers, citing B. M. coll.) ; Nicobars, (Heller) ; Trincomali, 

 Ceylon, (Muller) ; Krusadai Islands, Gulf of Manaar, (Gravely) ; 

 Cocos-Keeling Atoll, (Caiman) ; Singapore, (Hilgendorf ) ; Mahe, Mal- 

 dives, (Pesta) ; Maldives, (Borradaile) ; Laecadvies, Ceylon, Arakan 

 coast, India, Mergui Archipelago, Samoa, (Alcock) ; Pulo Sambu, 

 Singapore, (Miers) ; Rameswaram, Tuticorin, Ceylon, New Guinea, 

 (Henderson) ; Loo Choo Islands, Kikaisima, (Stimpson) ; Apia, 

 Samoa, (Boone). 



Material examined: Nine specimens, of assorted sizes, including 

 both sexes, and egg-laden female, taken at Apia, Samoa, September 5, 

 1931. 



Technical description : Carapace three-fourths as long as wide ; 

 frontal margin with a median notch on either side of which are three 

 to four small, sharp denticles of uneven size ; the rounded anterolateral 

 margin has four small acute teeth, the orbital tooth being the largest 

 of the series ; the others decreasing in size posteriorly. There are nu- 

 merous coarse granules along the frontal and anterolateral margin; 

 some of these granules are spinulose. There are also a cluster of spin- 

 ulose granules below the infero-orbital angle, also across the inferior 

 margin of the antennal fossett and the margin of the buccal cavern 

 above the merus. The dorsal surface of the carapace has the regions 

 clearly delineated by well defined grooves. The posterior two-thirds of 

 the carapace is smooth. The external maxillipeds are very setose, es- 

 pecially along the inner margin, and there are numerous tufts of 

 coarse setae on the sternal plastron. The male belt is seven segmented 

 with triangular tip. The female belt is broadly oval, seven segmented, 

 with a very setose margin. 



The chelipeds are conspicuously unequal in both sexes; with the 

 upper and external surfaces smooth except for irregularly distributed 

 coarse punctae ; there is a single tooth at the inner carpal angle. There 

 is a large basal molar followed by two smaller teeth on the upper claw, 

 and a basal molar and one small tooth on the lower finger. 



The ambulatories each have a well developed dactyl with a sharp 

 corneous tip; the remainder of the dactyl is covered with approxi- 

 mately longitudinal series of coarse setae, which are also found along 

 the propodus, carpus and along the lateral margins of the merus. 



