STALK-EYED CRUSTACEA 



245 



maximum transverse curve of marginal border of 

 carapace. 



c. Walking legs with scattered short black hairs. — 

 {C. guaiihuj/ii.) 



d. Walking legs have long black hairs. — {C. cressum.) 



I. Cardiosoma carnifex. 



Cardiosovia carnifex 



Cardiosoma obcssmn^ 

 Cardiosoma hertipes) 

 CardiosoJiia nrvillci 

 Cancer carnifex . 

 Ocypoda cerdata . 

 Gecarcinus Jiertipes 

 Gecarcimis carnifex 

 Cancer hydromus (?) 



Herbst, Latreille, Milne 

 Edwards, De Haan. 



Dana. 



Milne Edwards. 



Herbst. 



Latreille. 



Lamarck. 



Latreille. Desmarest. 



Herbst. 



Carapace very elevated ; its surface very curved from 

 before backwards, but almost flat from side to side ; its 

 lateral edges are marked by a prominent and raised line. 

 There is a small tooth behind the external orbital angle. 

 The first pair of legs is unequal in the male and female, 

 but more marked in the former, with the fourth joint and 

 the palm of hand smooth. The hand is very broad, and 

 the fingers touch in almost their entire length when closed. 

 The last joint of the walking legs has four rows of spines ; 

 the spines in the two under rows are few in number. 



Range. — Oriental Region, Pondicherry, Fiji, Tahiti, 

 Admiraltv Islands. 



