144 



It has all the characters of the second division ofRhombus, indicated 

 by Cuvier in his ' Rėgne Animal.' 



Centrina nigra. Cent. corpore toto glabro, nigro ; pinnarum 

 apicibus hyalescentibus. 



It is said that this fish does not grow larger than the individual 

 sent, (10 inches in length). It is intermediate in characters betvveen 

 Centrina, Cuv., and Acantkias, Ej. ; having the teeth of the 

 former genus, and the form of body of the latter, as well as the back- 

 ward position of the second dorsal fin. It is entirely black, even on 

 its under surface. 



