308 A. Alcock — Carcinologieal Fauna of India. [No. 3, 



Front about a third the greatest breadth of the carapace, faintly- 

 notched nnd grooved in the middle line. 



Antero-lateral borders cut into five teeth followed by a procurved 

 spine. 



Merus of external maxillipeds having the external angle very 

 slightly produced. 



Chelipeds unequal, much longer and more massive than the legs, 

 the larger one about three times the length of the carapace : they are 

 smooth and unarmed, except that the anterior border of the arm is 

 finely serrulate and that one of the serrations at either the near or far 

 end (rarely at both) is enlarged to form a spine. In the smaller 

 cheliped the fingers are slender hooked and finely toothed, and are 

 rather longer than the slightly swollen pnlm : in the larger cheliped 

 they are stouter and more coarsely toothed and are shorter than the 

 swollen palm. 



Legs slender, the longest pair are hardly more than twice the 

 length of the carapace; the dactylus of all, though compressed, is 

 slender. 



In the Indian Museum are 16 specimens from off Ceylon 34 fathoms 

 (besides 3 from Mauritius and 2 from Samoa). 



In the largest specimen (from Mauritius) the carapace is 95 

 milliin. long and 145 millim. broad. The Indian specimens, though 

 they include egg-laden females, are much smaller. 



Psopheticus, Wood-Mason. 



Psopheticus, Wood-Mason, Admin. Kep. Marine Survey of India, 1890-91, p. 20 

 (name only) : Alcock, Investigator Deep-Sea Brachynra, p. 72. 



Psopheticus in several respects connects Carcinoplax and Pseudo- 

 rhombila with Eucrale, and hence serves to emphasize the opinion of 

 Miers as to the closeness of the ties that connect the three latter genera. 



As in Pseitdorhombila and Carcinoplax, the carapace is much 

 broader than long nnd the orbital hiatus is open. As in Pseudorhombila, 

 the dactylus of the last pair of legs is styliform. As in Eucrate, the 

 fron to- orbital border occupies almost all the breadth of the carapace. 



Carapace deepish, quadrilateral or subquadrilateral, a good deal 

 broader than long, with the regions hardly defined, moderately convex 

 fore and aft, flat from side to side. 



Fronto-orbital border little, if at all, less than the greatest breadth 

 of the carapace, the antero-lateral borders of the carapace therefore— 

 which are short — are either very slightly arched or are in the same 



