PLATE 52 
plate LII. 
PERCA FLUVIATILIS,. 
PERCH. 
• PISCES THORACICI. 
generic character. 
Jaws unequal. Teeth acute, and incuryated. Gill covere of three 
plates, scaly ; the upper plate serrated. 'Seven rays in the gill mem- 
rane. Lateral line arched with the back, 'scales hard and rough. 
Pins spinous. “ 
specific character 
AND 
SYNONYMS. 
^ive, with black bands ; dorsal fins olivaceous, the rest sanguineous. 
Perca FLUVIATILIS : ollvacea nigro-fasciata, pinna dorsali olivacca, 
caeteris sanguineis. 
PeRca FLUVIATILIS: plnnarum dorsalium secunda radiis 16. Linn. 
0 Fn. Suec. ZZ2.—Gmel. Syst. Nat. p. 1306. 168. 
sp. 1. 
Perea pinna ani radiis 11. Bloch Fisch. Deutschl. 2.p. 66. n. 2. 
t. 52. 
orsthng, Barschling. Marsigl. Danub. ^.p, 65. t. 23./. 2 . 
Perch. Ray, pise. p. 91. 
Will, ichth. p. 291. 
Brit. Zool. p. 2U. 
