500 NEW YORK STATE MUSEUM 



Genus perca (Artedi) Linnaeus 

 Body oblong, somewhat compressed, the back elevated; 

 cheeks scaly; opercles mostly naked; the operculum armed with 

 a single spine; preopercle and shoulder girdle serrated; pre- 

 opercle with retrorse, hooked serrations below; mouth moder- 

 ate, terminal; premaxillaries protractile; teeth in villiform 

 bands on jaws, vomer, and palatines, no canine teeth; bran- 

 chiostegals seven; gill membranes separate; pseudobranchiae 

 small, but perfect; no anal papilla; scales rather small, strongly 

 ctenoid, lateral line complete, the tubes straight and not extend- 

 ing to the extremity of the scale; dorsal fins entirely separate, 

 the first of 12 to 16 spines; anal fin with two slender spines, 

 well separated from the soft rays; ventral spines well devel- 

 oped, the ventral fins near together; caudal emarginate; air 

 bladder present; pyloric caeca three; vertebrae very numerous, 

 21-1-20 or 21=41 or 42. Fresh waters of northern regions; three 

 closely related species now known, Perca fluviatilis in 

 Europe, P. schrenckii in Asia, and P. flavescens in 

 North America. 



246 Perca flavescens (Mitchill) 



Yellow Perch; Ring Perch 



Morone flavescens Mitchill, Report in Part, 18, 1814. 



Bodianus flavescens Mitchill, Trans. Lit. & Phil. Soc. N. Y. I, 421, 1815. 



Perca serrato-granulata Ctjvier & Valenciennes, Hist. Nat. Poiss. II. 47, 



1828, New Yorli; De Kay, N. Y. Fauna, Fishes, 5, pi. 22, fig. 64, 1842. 

 Perca gramilata Cuvier & Valenciennes, op. cit. II, 48, pi. IX, 1828, New 



York; De Kay, op. cit. 5, pi. 68, fig. 220, 1842. 

 Perca acuta Cuvier & Valenciennes, op. cit. II, 4S, pi. X, 1828; De Kay, op. 



cit. 6, pi. 68, fig. 222, 1842. 

 Perca gracilis Ctjvier &, Valenciennes, op. cit. II, 50, 1828, Skaneateles 



Lake, N. Y.; De Kay, op. cit. 6, 1842; Gunther, Oat. Fish. Brit. Mus. 



I, 60, 1859. 

 Perca americana Jordan & Gilbert, Bull. 16, U. S. Nat. Mus. 524, 1883. 

 Perca flavescens Cuvier & Valenciennes, op. cit. II, 46, 1828; De Kay, op. 



cit. 3, pi. 1, fig. 1, 1842; Gunther, op. cit. 1, 59, 1859; 



Storer, Hist. Fish. Mass. 4. pi. II, fig. 1, 1867; Meek, Ann. N. Y. Ac. 



Sci. IV, 314, 1888; Bean, Fishes Penna. 126, color pi. 12, 1893; Ever- 



MANN & Kendall, Rept. U. S. F. C. for 1894. 602, 1896; Jordan & 



EvERMANN, Bull. 47, U. S. Nat. Mus. 1023, 1896, pi. CLXV, fig. 435, 



•1900; Bean, Bull. Am. Mus. Nat. Hist. IX, 365, 1897; Mearns, Bull. 



Am. Mus. Nat. Hist. X, 320, 1898; Eugene Smith, Proc. Linn. Soc. 



N. Y. 1897, 37, 1898. 



