284 



and the anterior pterygostomian angles of the carapace are spiniform, and the 

 lateral borders behind the cervical groove are serrated, the first tooth, which 

 is hepatic in position, being of fair size. Abdomen perfectly smooth. 



Rostrum acutely triangular, with trenchant edges, not more than a third 

 of its length lies beyond the eyes. 



Eyes of good size, their major diameter about a third the length of the 

 rostrum. 



The antennal acicle reaches about two-thirds of the way along the antennal 

 peduncle. 



External maxillipeds unarmed. 



Chelipeds in the female more than three times the length of the carapace 

 (rostrum included), smooth, glabrous except a tuft of silky black setae conceal- 

 ing the tips of the fingers. 



In the next 3 pairs of legs there are some silky setae on the dactyli, the 

 posterior border of the dactyli is serrated, and there are a series of acicular 

 spinelets along the middle of the posterior border of the propodites. 



The outer ends of the individual thoracic sterna are well defined and 

 serrulate. 



Andaman Sea, 669 fathoms. 



3443 



Regd. No. ~ (Type of the species). 



51. UrOptydlUS aUStralis, Henderson, var. indicus, nov. 



Appears to differ from the form described by Henderson (Challenger Anomura, p. 179, pi. xxi. fig. 4) only in 

 the sculpture of the chelipeds, which are smooth except for gome vesicnlous granules on the ventral surface of the 

 ischium merus and carpus of the chelipeds : the antero-lateral angles of the carapace and the anterior pterygo- 

 stomian angle also seem to be more decidedly spiniform. 



Carapace smooth unarmed, except for the spiniform antero-lateral and 

 pterygostomian angles, its lateral borders to the naked eye are smooth and un- 

 broken, but under the lens are in places very finely crenulate. Rostrum triangu- 

 lar, acute, with trenchant edges, not quite a third of its length lies beyond the 

 eyes. 



Abdomen smooth and polished. 



Eyes of good size, their major diameter more than a third the length of the 

 rostrum. 



The antennal acicle nearly reaches to the end of the antennal peduncle. 



External maxillipeds unarmed. 



The chelipeds are from 3^ to nearly 4 times the length of the carapace 

 (rostrum included) and are stouter in the male than in the female : they are 

 glabrous except for a few silky setas in the distal half of the fingers, and they 



