CLASS PISCES. 105 



Aspro, Cuv. 



Have the body elongated, the two dorsal fins sepa- 

 rated, broad ventral fins, the teeth velvety, the head 

 depressed, the muzzle more advanced than the mouth, 

 and terminated in a round point. 



There are two species in the fresh waters of Eu- 

 rope ; their flesh is light and pleasant. 



Aspro vulgaris, Cuv. Perca asper, Lin. Bl. 107. 1 and 2 Cuv. 



and Val. ii. 26. 



Of the Rhone, and its tributary streams ; greenish, 

 three or four vertical blackish bands, eight spines to 

 the first dorsal fin. 



Perca Zing el, L. Bl. 105. 



Of the Danube, larger than the last, but like it in 

 colour ; thirteen spines to the first dorsal fin. 



This subdivision includes moreover certain foreign 

 fish, singular enough in their conformation to give 

 occasion for as many subgenera. 



Huro, Cuv. and Val. 



Have all the characters of the perch, properly so 

 called, except that their preoperculum is not in- 

 dented ! . 



rayee, Lacep. iv. 323 ; his Perseque triacanthe, ib. 424 ; his Perseque 

 pentacanthe, ib. ; his Bodian six rates, ib. 302 ; his Centrupome six 

 rates, v. 690 ; and the Perca bilineata, Thunb. Nov. Act. Stock, xiii. 

 pi. v. p. 142 appear to be varieties of this fish. 

 1 Huro nigricans, Cuv. and Val. Vol. ii. pi. xvii. 



