vcio Crab from Basra. 



63 



Sesarma [Ilolometopus) boulengeriy sp. n. 



Descriptlm. — Closely resembling S. dehaani, M.-E., from 

 whicli it differs in the t'oUowino- cliaructers : — 



The carapace, as a rule, is sliglitly wider in specimens of 

 similar size. The inter-re<ijional grooves on the posterior part 

 of the carapace are rather less deep. The sides of the front 

 are distinctly concave. 



The nierus of the chelipeds has the anterior margin rather 

 more expanded distally and more coarsely dentate ; the distal 



A. Sesarma bouhngeri, male, holotype ; Basra. Outer surface of left 



chela. 



B. Sesarma dehaani, Milne-Edwarda, male ; Hong Kong. Outer surface 



of left chela. 



tooth on the upper edge is blunt and indistinct. The inner 

 angle of the c;xrpus — which in S. dehaani is rounded or 

 bluntly angled, with sometimes an apical granule — is produced 

 as a small but distinct and acute tooth *. The palm is more 

 inflated, especially in the male ; on its outer surface is an 

 obscure row of granules about the middle; above this the 

 graimles are larger, })ecoming less j)rominent towards the 

 upper margin ; below the middle the granules are smaller 



• A specimen collected by Major C. Clu-isty, and received since this 

 was written, had the carpal angle of one of tJie chelipeds blunt ; iu the 

 other cheliped the angle forms an acute tooth as described above. 



