558 



ARGENTINE HOLOCENTRUS. 



Holocentrus Argentinus. H. subfuscus, lateribus argenteis. 

 Brownish Holocentrus with silvery sides. 

 Holocentrus argentinus. Block. 



Length about five inches : second lamina of the 

 gill-covers marked by three short spines: eyes rather 

 large : scales small : fins pale, with the rays bifid 

 and continued a little beyond the membrane : tail 

 very nearly strait, or scarce perceptibly lunated, so 

 that it might rank with nearly equal propriety under 

 either division of the genus. Native regions un- 

 known. 



BLACK HOLOCENTRUS. 



Holocentrus Niger. H. niger, squamis minutissimis. 

 Black Holocentrus with extremely minute scales. 

 Black-Fish. Penn. Brit. Zool. Borl. Cornw. t. 25. f. 8. 



Said to resemble the Perca cernua, of which it 

 has even been sometimes considered as a variety : 

 length fifteen inches : head somewhat like that of a 

 trout : teeth very small : dorsal fin reaching far 

 down the back : tail forked : described by Ray, 

 Pennant, &c. on the authority of Mr. J ago : found 

 about the coast of Cornwall. 



