276 



Records of the Indian Museum. 



[Vol. XIII, 



near the base, the rostrum bears a sharp forwardly directed tooth 

 (text-fig. 25). 



The eyes and a small portion of the eyestalks extend beyond 

 the carapace. A small post-ocular tooth may be seen when the 

 carapace is viewed from beneath, but in dorsal view is altogether 



invisible. The antennules 

 are separated at the base 

 by a well-defined septum, 

 much more distinct than 

 in E. (T.) unguiformis. 

 Theepistomeislong. The 

 anterior border of the 

 buccal cavern is convex 

 on either side of the mid- 

 dle line. In the outer 

 maxillipedes the ischium 

 is much longer than the 

 merus and is separated 

 from it by a very oblique 

 suture. The exognath 

 bears a long flagellum and 

 its basal part, though 

 largely overlapped by the endopod, is visible throughout its length. 



The chelipedes are alike in the two sexes and are not appreci- 

 ably stouter than the walking legs ; they are about as long as the 

 carapace and rostrum. The merus is without teeth and the merus, 

 carpus and palm are slightly roughened and bear very fine and 

 exceedingly short hairs. The chela is about four and a half times 

 as long as high and the fingers are equal in length with the palm. 

 Towards their apices the fingers are slightly inturned and on the 

 mner face of the chela are somewhat hollowed longitudinally. 

 When the claw is closed the fingers meet throughout their length ; 



Fig. 2^.—Elamena (T.) xavieri, sp. nov. 

 Anterior part of carapace seen from below. 



Fig. 26. — Elamena (Trigonoplax) xavieyi, sp. nov. 

 Chela of male. 



each being provided with a series of small recurved teeth extend- 

 ing from the base to the apex (text-fig. 26). 



The second pair of walking legs is slightly longer than the first 

 or third, about two and a third times the length of the carapace ; 

 the fourth is much the shortest, about one and three quarter times 

 the length of the carapace. All the segments except the dactylus 



