80 ICHTHYOLOGIA OHIENSIS 



equal jaws, gill covers, lateral line, &c. Its tail 

 and preopercule are somewhat like Calliurus. It 

 might be called Nemocampsis, meaning flexuose line. 

 Diameter one fourth of the length. 



[II. 52] \_32\ 2d Subgenus. Dioplites. 



Opercule with two spines above. First ray of the 

 thoracic fins spiny. Lateral line curved as the back. 

 Meaning two weapons. 



15th Species. Trout River-bass. Lepomis Sal- 

 monea. Lepome saumone. 



Olivaceous brown above, sides pale with some 

 round yellowish spots, beneath white: preopercule 

 simple, head without sutures, lower jaw hardly 

 longer, spines flat, short, acute, and decurrent above 

 and beneath, opercule acute beneath the spines : tail 

 lunulate, tip blackish : vent posterior. 



Length from 6 to 24 inches. Vulgar names White 

 Trout, Brown Trout, Trout Pearch, Trout Bass, 

 Brown Bass, Black Bass, Black Pearch, &c. Com- 

 mon in the Kentucky, Ohio, Green; and Licking 

 rivers, &c. It offers a delicate white flesh, similar 

 to the Perca Salmonea. It is a voracious fish, with 

 many rows of sharp teeth on the jaws and in the 

 throat. It bites easily at the hook, and eats suckers, 

 minnows, and chubs. Diameter one fifth of the 

 length. Fins olivaceous brown ; dorsal with 2 5 rays, 

 whereof 10 are spiny, slightly depressed between 

 them : anal rounded small, 3 and 1 1 rays. Pectoral 

 acute trapesoidal 18 rays. Thoracic i and 5, spiny 

 ray half the length. Tail with 24 rays. Iris silvery. 



1 6th Species. Spotted River-bass. Lepomis no- 

 tata. Lepome tache. 



This species differs merely from the foregoing, by 



