340 A. Alcock — Carcinological Fauna oj India. [No. 3, 



Dactylus of external maxillipeds slender and inconspicuous, arising 

 far back on the inner (flexor) edge of the propodite. 



Chelipeds decidedly stouter than the legs and about as long as the 

 first pair of legs : their inner border is scantily fringed with hair : their 

 dactylus is nearly two-thirds the length of the pnlm. 



Legs slender, fringed with hairs : the second pair are decidedly the 

 longest — a little longer than the carapace : the fourth pair are decidedly 

 the shortest : the first and third pairs are about equal in length : in all 

 four pairs the dactyli are equally short. 



From Mactra violacea, from the mouth of the R. Hooghly. 



Diameter of carapace not quite 6 millim. 



In the male the front is a little promineut and the chelipeds are 

 very much stouter. 



41. Pinnoteres abyssicola, Alcock and Anderson. 



Pinnoteres abyssicola, Alcock and Anderson, Ann. Mag. Nat. Hist. (7) III. 1899, 

 p. 14: Alcock, Investigator Deep Sea Brachyura, p. 81. 



The description applies to the female. 



Carapace subcircular, smooth, convex. Front rather promineut, 

 little deflexed, broadly triangular. Eyes of good size but deficient in 

 pigment, entirely dorsal. 



The palp of the external maxillipeds is minute and is much con- 

 cealed by hairs that fringe the prominent internal angle of the merus.: 

 the dactylus is borne at the tip of the propodite, 



Chelipeds much stouter than the legs, nude except for a fringe of 

 hairs on the lower border of the immobile finger : they are about as 

 long as the carapace, and the dactylus is not much shorter than the 

 upper border of the palm. 



Legs slender, nude : the 2nd and 3rd pairs are slightly longer than 

 the 1st and 4th, being nearly If times the length of the carapace : the 

 dactyli also of the 2nd and 3rd pairs are a little longer than those of the 

 Jst and 4th. 



From Lima indica, from 430 fathoms oft' the Travancore coast. 



Diameter of carapace 8 millim. 



Xanthasia, White. 



Xanthasia, White, Ann. Mag. Nat. Hist. XVIII. 1846, p. 176: Dana, U.S. Expl. 

 Exp., Crust., pt. I. p. 383 : Milne Edwards, Ann. Sci. Nat., Zool., (3) XVIII. 1853, 

 p. 221 : Burger, Zool. Jahrb., Syst., VIII. 1894-95, p. 386. 



Resembles Pinnoteres in structure and habit, but differs in the 

 following particulars : — 



The edge of the carapace is well defined and, in all but its fronto- 



