22- 



^otis. The rays are, in the anal 12, wherein the fast is shor^ 

 atid spiny, thoracic 6, the first hardly spiny, pectoral 1 4, can- 

 dal 20. The whole fish is covered with very small scales, and 

 the lateral line begins above the opercule: the second spine out- 

 side of the opercule is remarkable. 



2d Species. Golden-eyes Perch. Perca chrysofis. Perchfe 

 CEuil-d'or. 



Upper jaw longer, one spine on the opercule, body oblong, 

 \^ breadth one fourth of total length, silvery with five longitudinal 

 brownish stripes on each side, head brown above: lateral line 

 diagonal and straight; first dorsal fin with eight rays, the second 

 has 14, whereof one is spiny, tail forked, roseate, tip brown; base 

 scaly- 

 Vulgar names Rock fish. Rock bass. Rock perch. Gold eyes> 

 Striped bass, £cc. It is commonly mistaken for the Rock fish 

 or Striped bass of the Atlantic Ocean, the Perca Mitchelli of 

 Dr. Mitchell, (Trans, of the philos. Society of New York, 

 vol. 1. page 413, tab. 3. fig. 4.) to which it is certainly greatly 

 similar; but it differs from it, by the single spine of the opercule, 

 the shape of the lateral line, the less number of stripes, the 

 scaly tail. Sec. It is not very common in the Ohio, and is hard- 

 ly ever seen at Pittsburgh, being more common in the lower 

 parts of the river, where it frequents the falls, ripples, and rocky 

 shores. Its usual size is about one foot. It is very good to 

 eat. It bites at the hook. The mouth is large with very small 

 teeth, the three pieces of the gill cover are slightly crenulate, 

 the middle one or preopercule being hoAvever deeply serrate. 

 The eyes are large black with a large golden iris. The lateral 

 line begins at the corner of the opercule and does not follow the 

 curve of the back, the stripes are parallel with it and only two of 

 them reach the tail. The branchial membrane has six rays; 

 the spine of the opercule is not terminal. The dorsal fins are 

 rufous and quite separate, the two first rays of the first are short- 

 er, the second is brown posteriorly and diagonally, its base is 

 scaly and such is also the base of the anal fin, which has 

 similar colours, and 15 rays, whereof three are spiny. Pec- 

 toral fins with 16 rays. Thoracic fins incarnate with six rays, 

 whereof one is «piny. 



