142 STALK-EYED CRUSTACEA 



are of moderate length, with the joints (except the last) 

 slightly compressed, but not carinated ; the last joint is 

 styliform and straight. 



The abdomen, in the male, is usually five-jointed, with 

 the three intermediate segments united. 



Range. — Pacific Ocean, Red Sea, West Indies ; in 

 shallow water. 



I. Carpilodes longimanus. 



Carpilodes longiuiamis . A. Milne Edwards. 

 Cancer nigerrimiis . . Desbonne and Schramm. 

 Liomera loiigimana . . A. Milne Edwards. 



The carapace is thick and very wide, convex in front 

 and behind, but flattened transversely, and smooth, except 

 at the anterior border, where there are some irregularities. 

 The grooves of the gastric and of the hepatic regions are 

 very visible. The front is wide, sloped, and formed of two 

 rounded lobes but little advanced. The antero-lateral 

 borders are short and very bowed, they are entire in front 

 and present behind two lobiform, slightly projecting 

 prominences. The antennary region is very elliptical ; 

 the basal antennal joint is short, but wide. The external 

 maxillipedes are smooth. 



The first pair of legs of unequal size ; the largest leg, 

 not always on the same side, is very strong. The arm 

 usually exceeds the edge of the carapace. The forearm is 

 rounded on the outside, and unarmed within. The hand 

 is thick, its length is more than two-thirds the breadth of 

 the carapace. The sm.all pincer is thin ; it is as long as 

 the one on the other side, but one-third less in height and 

 thickness. The walking legs, short, are slightly hairy 

 above. 



