ANOMURA. 223 



The merus of the third maxilliped bears two large spines at the distal extremity. 



The chelipeds are spinose and slender, nearly twice the length of the carapace, 

 and bearing a few hairs. The spines on the merus increase in size distally. The 

 ringers of the chelipeds are cylindrical, acute, slightly incurved, and in spirit 

 specimens are marked with two red bands, one proximal, the other distal. 



The walking legs bear a few hairs, and the tips of the anterior pair reach the base 

 of the ringers of the chelipeds. 



Localities: (l) Dutch Modragam Paar, Station LVIL, 12 to 36 fathoms; 

 (2) Aripu Reef and elsewhere in Gulf of Manaar, shallow water ; 23 specimens. The 

 carapace of the largest individual measured 1'7 centims. 



This species bears a general resemblance to Munida honshuensis, Benedict, in the 

 disposition of the spines on the carapace, but differs from it in having (1) the abdomen 

 unarmed ; (2) the carapace a little broader ; (3) the possession of long iridescent hairs ; 

 (4) the rostrum shorter ; and (5) two additional spines on the carapace. 



This species is named in honour of Col. Alcock, F.R.S., who has done so much to 

 elucidate the Crustacean fauna of the Indian Ocean. 



