16 Major A. Alcock and Capt. A. R. S. Anderson on 



The abdomen, behind the second segment, has its dorsal 

 surface somewhat creased, but not tuberculous. 



The eyes are relatively much larger. 



The movable antennal acicle has only two spines, one of 

 which is small, on its outer border; the antennary flagella 

 are nearly as long as the carapace. 



The chelipeds and legs are relatively longer and slenderer; 

 the wrist is longer and its inner angle does not form a 

 foliaceous lobe. 



Carapace piriform, convex, very slightly longer than broad ; 

 gastric, cardiac, and branchial regions well defined, the gastric 

 and branchial tumid and prominent, the cardiac, though 

 convex, a good deal sunken. The surface of the carapace, as 

 of the second abdominal segment, is studded with vesiculous, 

 pustulous, and conical tubercles of various sizes. 



Rostrum very distinctly and evenly trifid and having a 

 denticle on either side near the base. 



Lateral margins of carapace, from the spiniform orbital 

 angle to the posterior border, armed with spines of various 

 sizes ; posterior border armed with conical tubercles of uniform 

 size. 



Eye-stalks with a few denticles dorsally. Antennulary 

 peduncles smooth. Antennal peduncle with the first two 

 joints spiniform at the outer angle, the flagellum about as 

 long as the carapace. 



The movable antennal acicle, which reaches slightly beyond 

 the end of the antennal peduncle, ends very acutely; its 

 outer edge bears a spinule and a large spine, its inner edge 

 bears three small spines. 



Chelipeds and legs spiny, especially on the dorsal surfaces. 

 The right cheliped is distinctly stouter, and the right legs are 

 distinctly longer, than the left. The legs, which are nearly a 

 dactylus longer than the chelipeds and rather less massive 

 than the left cheliped, are about If times the length of the 

 carapace. 



The second abdominal segment consists of a single plate 

 dorsally, which is dimpled on either side of the middle line. 



The abdomen of the male has a slight twist to the right 

 and is nearly symmetrically constituted ; in the female, 

 although it is unsymmetrical, it is not much more twisted. 



Four specimens, the largest of which has the carapace 

 39*5 millim. long and 37 millim. broad, were taken off the 

 Travancore coast at 430 fathoms. 



Colours in spirit pale milky orange-pink, eyes intensely 

 black. 



