254 



Records of the Indian Museum. [Vol. XXIV. 



fused portion of the two rami composing the outer antennular 

 flagellum consists of 4 segments. The antennal scale is strongly 

 narrowed distally (text-fig. 836) ; the outer margin is 'convex and 

 terminates in a large spine which does not reach as far forwards as 

 the sharply rounded distal end of the lamella. 



The antepenultimate segment of the third maxilliped (text- 

 fig. 83c) is slender, as in A. miersi, and does not contrast strongly 

 in width with the two terminal segments ; in length it is slightly 

 greater than these two segments combined. 



The first peraeopods (text-fig. 84a) reach beyond the anten- 

 nal scale by the chela and half the length of the carpus. There 

 are a few setae on the lower borders of the basis and ischium. 

 The merus and carpus are equal in length, each 1*5 times as long 

 as the chela. The palm is normal in form, without the curious 

 structure seen in A. inermis ; the fingers bear tufts of setae and 



Text-fig. 84. — Anchistus gravieri, sp. nov. 

 First peraeopod. c. Third pepaeopod. 



b. Second peraeopod. 



d. Dactylus of same. 



are somewhat spatulate, unarmed and longer than the palm. 



In the single specimen examined only the right leg of the sec- 

 ond pair is present (text-fig. 846). It reaches be)'ond the anten- 

 nal scale by rather more than the length of the chela. The me- 

 rus is 3 times as long as wide and about 1 -5 times as long as the 

 carpus. The carpus is conical, about two-thirds as broad as long 

 and one quarter the length of the chela. The palm is 175 times 

 the length of the fingers. In the dentition of the fingers the species 

 resembles A. inermis ; the dactylar tooth is, however, smaller and 

 the inner edge of the fixed finger is not angulate and bears six 

 small denticles in the proximal half. 



The merus of the third leg (text-fig. 846") is 4 times as Ion g 



