76 



The chelipeds are moderately massive and have their movements of abduc- 

 tion and extension somewhat restricted, in the male the hands are unequal. The 

 arm is short and trigonal, the wrist rather long and crooked. 



Legs sufficiently long and stout, the penultimate pair being the longest ; 

 their dactyli are sharply trigonal and elegantly plumose : the last pair are sub- 

 dorsal and have the dactylus slightly curved and compressed. 



The abdomen of the male, which is four-jointed : does not nearly fill the 

 space between the last pair of legs. 



Between the 4th and 5th segments of the sternum, in the male, is inter- 

 calated a long narrow plate that appears to cover the external genital ducts. 



This seems to be more closely related to Xenophthalmodes than to any other 

 genus. 



ClimatOpsis fllbida, Alcock and Anderson. Plate IV. fig. 3. 



Carapace very finely gi^anular when denuded. The narrow front and the 

 antero-lateral borders form a semicircular curve : the postero-lateral borders are 

 slightly divergent, the greatest breadth of the carapace being between the bases 

 of the penultimate pair of legs. The tumid anterior (true inner) borders of the 

 eyestalks bulge beyond the orbital concavities of the anterior border of the 

 carapace. 



The efferent branchial canals cause an angular bulging or carination of the 

 pterygostomian regions. 



The chelipeds are unequal in the male (female unknown), the longer one 

 being about If times the length of the carapace. They are unarmed. In the 

 larger hand the fingers meet only at tip and are finely toothed in the distal half 

 only, being rather deeply notched in the basal half, while on the inner surface of 

 the movable finger is a curious truncated spine. In the smaller hand the fingers 

 meet throughout their extent and only the immovable finger is distinctly toothed, 

 one or two of its teeth being enlarged. 



The first and last jjair of legs are about If times, the second and third pair 

 are about twice, the length of the carapace. In the last pair of legs the ter- 

 minal joints are more strongly ciliated, and the dactylus is slightly curved and 

 compressed as for swimming. 



Colours in spirit rich chocolate brown. Animal entirely covered with velvet. 



Three males from the Andaman Sea, 194 fathoms. The carapace of the 

 largest is 9 millim. long and 10 millim. broad. 



Hephthopelta n. gen. 



Carapace very deep, inflated, rudely semicircular, about as long as broad, 

 convex fore and aft and vertically deflexed anteriorly, all its borders entire and 

 all except the posterior tumid, the cardiac and branchial regions well delimited. 



