The Perch Family 157 



scales 9-100-27 ; head and cheeks scaly ; spines on opercle ; 

 head depressed and pointed ; pyloric coeca 5 to 7. 



GENUS PERCA 



Perca flavescens. The Yellow-perch. Body oblong, somewhat 

 compressed, the back elevated ; head 3J ; depth 3i ; eye j ; D. 

 XIV-15 ; A. II, 7 ; scales 6-75-17 ; top of head rough ; profile 

 convex from dorsal to occiput, thence concave to snout, which 

 projects ; cheeks scaly ; opercles nearly naked ; preopercle and 

 shoulder girdle serrated ; teeth in villiform bands ; branchioste- 

 gals 7 ; scales strongly ctenoid. 



THE PIKE-PERCH 



(Siizostedion vitreum) 



The pike-perch or wall-eye was first described 

 by Dr. Mitchill in 18 18, from Cayuga Lake, New 

 York. He named it vitrea in allusion to its large 

 vitreous or glassy eye. It would have been indeed 

 fortunate if the name glass-eye or wall-eye, with or 

 without the suffix perch, had been adopted ; for 

 this fine fish is a true perch, with nothing "pike- 

 like" in form or habits, except its large mouth 

 and canine teeth, and nothing " salmon-like " 

 except its trimly-shaped body. But these fancied 

 resemblances have caused it to be called in vari- 

 ous localities wall-eyed pike, yellow pike, blue 

 pike, glass-eyed pike, salmon, and jack salmon. 

 It is also known in Canada as dore and okow, 

 and among the commercial fishermen as "pick- 



