BRITISH FISHES. 



ACANTHOPTERYGIL* 



PERCIDM.) 



THE PERCH. 



Perca fluviatilis, LINN.EUS. BLOCK, pt. ii. pi. 52. 



,, ,, CUVIER et VALENCIENNES, Hist. Nat. des Poiss. t. ii. p. 20. 



,, ,, Perch, PENNANT, Brit. Zoo], edit. 1812, vol. iii. p. 345, 



pi. 59. 



,, ,, ,, DONOVAN, Brit. Fishes, pi. 52. 



,, ,, ,, FLEMING, Brit. Animals, p. 213, sp. 142. 



,, ,, JENYNS, Brit. Vert. p. 330. 



Generic Cliaracters. Two dorsal fins, distinct, separated ; the rays of the 

 first spinous, those of the second flexible ; tongue smooth; teeth in both jaws, 

 in front of the vomer, and on the palatine bones ; preoperculum notched below, 

 serrated on the posterior edge ; operculum bony, ending in a flattened point 

 directed backwards ; branchiostegous rays 7 ; scales rough, hard, and not easily 

 detached. 



BARON CUVIER has chosen the Perch as representing the 

 type of his first genus Perca, but has separated from that 

 genus, as it was established by Linnaeus, several species, 

 on account of certain variations which the generic characters 



* Fishes with some of their fin-rays spinous, the others flexible. 

 t The family of the Perches. 

 VOL. J. B 



