227 



peduncle, or even in some cases slightly falling short of this, and extending to 

 about the middle of the last joint of the antennular peduncle. The ophthalmic 

 scales are rather small, and separated by a considerable interval, with their apices 

 acute and entire. The antennal acicle extends to about the middle of the 

 terminal joint of the antennal peduncle; it is straight and acute, with a few 

 short spines on its inner margin, and sometimes also on its outer margin, con- 

 cealed by the hairs with which the acicle is clothed. The external prolongation 

 of the second joint of the antennal peduncle is bispinose in some specimens at 

 least; the third joint is produced inferiorly into a strong spine. The antennal 

 flagellum is of moderate length, extending to the tips of the chelipedes, and is 

 fringed with long hairs. 



: ' The chelipedes as well as the ambulatory legs are clothed with long silky 

 hairs. The chelipedes are subequal in most specimens, but in some males the 

 right is larger. The carpus, propodus, and dactylus are armed with short acute 

 spines, some of which are horny tipped, and the majority give rise to bunches 

 of silky hairs. On the upper surface of the carpus there is a median longi- 

 tudinal smooth area, with rows of spinules on either side. The spines are 

 arranged irregularly on the upper surface of the hands and fingers, but there 

 are always three or four more prominent than the others on the inner margin 

 of the hand. The apices of the fingers are horny. 



• The ambulatory legs are long and slender, especially the second pair ; all 

 the joints are provided with long marginal hairs. In some specimens a'few 

 spinules are met with on the anterior margin of the carpal and propodal joints, 

 and in older specimens they appear to be represented by slight tubercular eleva- 

 tions. The dactyli are about one and a half times the length of the propodi. 

 " The following are the measurements of an adult male :— 

 Length of body ... ... 35 



mm. 



„ carapace 



„ eye-stalks 



„ chelipede 



„ first leg 



„ second leg 



„ dactylus of second leg 



„ propodus of same 



" Some of the specimens are infested by two different Bopyrid parasites- 

 one living in the branchial cavity, the other attached to the abdomen— but 

 occurring in different hosts." 



Inhabiting shells of Bostellaria delicatula encrusted with Cirripedes and 

 Epizoanthus, Xenophora pallidula encrusted with a species of Capulus, and 

 Ranella perca. From the Bay of Bengal, off the Madras coast, 133, and ' 145- 



17 



5-5 



25 



40 



38 



12-5 



7-5 



