40 THREE CRUISES OF THE " BLAKE." 



northern species of the genus. JS. jjrinceps reaches a length of 

 five inches or more. 



Numerous new species of Pandalus, some of them very large 

 and with greatly elongated legs, and of the allied genus Hetero- 

 carpus (Fig. 244), in which the carapace is beautifully carinated, 



Fig. 244. — Heterocarpus carinatus. '^. (S. I. Smith. ) 



were taken in 200 to 1,000 fathoms ; they are apparently char- 

 acteristic of the fauna at that depth in the West Indian region. 

 The species of the new genus Stylodactylus, dredged from 400 

 to 500 fathoms, probably represents a new family of Caridea. 



Fig. 246. — Acanthephyra Agassizii. \. (S. I. Smith.) 



The oral appendages and branchiae belong to a peculiar type of 

 structure, and the claws of the first and second pairs of legs are 

 very long and slender, with slender multiarticulate and hairy 

 digits. Nematocarcinus ensiferus (Fig. 245), of a bright rose- 

 color, from 800 to 1,400 fathoms, and JV. cursor, from 500 



