548 



WHITING PERCH. 



it has been sometimes considered as a hybrid fish 

 between these two species : observed principally in 

 the Volga and some other rivers opening into the 

 Caspian Sea. 



RUFFE PERCH. 



Perca Cernua. P. subolimcea % fusco-punctata, pinnce dor$alis 

 spinis quindecim, 



Subolivaceous Perch, speckled with black, with fifteen spines in 



the dorsal fin. 

 Perca cernua. Lin* Block. fyc f 

 The Ruffe. Venn. Brit. ZooL 



Length about six inches : shape more slender 

 than that of the common Perch : head rather 

 large, and somewhat flattened : teeth small : 

 colour subolivaceous, with numerous dusky spots 

 disposed over the body, dorsal, pectoral fins, and 

 tail : abdomen whitish : native of many parts of 

 Europe; chiefly frequenting clear rivers, assembling 

 in large shoals, and keeping in the deepest part of 

 the water. 



WHITING PERCH. 



perca Alburnus. P. subfusca, fasciis plurimis obliquis fuscis, 



radio primo pinnce dorsalis spinoso. 

 Pale-brown Perch, with numerous oblique dusky bands, and 



the first ray of the dorsal fin spiny. 

 Perca Alburnus. Lin. Gmel. 



Native of the American seas,. 



