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broad and rounded. Tail 20 rays. Thoracic one 

 and five. Pectoral 15. Diameter of the body nearly 

 one fourth of total length. 



7th Species. Blue Sunfish. Icthelis cyanella. 

 •Icthele bleuatre. 



Body elliptic, elongate, diameter one fifth, oliva- 

 ceous gilt, crowded with irregular blue dotts ; brown- 

 ish above: head elongate, lower jaw longer, cheeks 

 with blue fiexuose lines; spot oblong blackish, nearly 

 marginal : tail rounded, notched : anal fin very broad 

 with 1 2 rays, whereof three are short spiny : pectoral 

 fins very short. 



A small species hardly three inches, called Blue- 

 fish or Sun-fish. I found it on the Ohio at the falls. 

 Appearing entirely blue at a distance. Head brown 

 above. Iris gilt. Opercule curved. Tail olive blue, 

 with 24 rays. Dorsal fin brownish with 20 rays, 

 whereof 10 are spiny, hardly any middle depression. 

 Pectoral small trapezoidal, 12 rays. Thoracic one 

 and five. 



8th Species. Blackeye Sunfish. Icthelis mela- 

 nops Icthele aeuil-noir. 



Body oblong, diameter one fourth, olivaceous cov- 

 ered with blue dotts, neck brown above, head large, 

 mouth rather large, upper jaw longer; opercule with 

 blue curved and longitudinal lines beneath: spot 

 rounded black at its base : fins olivaceous, tail bilobed : 

 anal fin with three and nine rays : pectoral fins large 

 oboval. 



Length from two to six inches : common in the 

 tributary streams of the Ohio, the Kentucky, Licking, 

 Miami, &c. and even in small creeks. Vulgar names, 

 Blue-fish, Black-eyes, Sun-fish, Blue-bass, &c. It has 

 black eyes like all the other species ; but the iris is 



