April, 1910. Fishes of Chicago — Meek and Hildebrand. 319 



snout long, depressed, 3.2 to 3.7 in head; diameter of eye 4.6 to 5.1 ; 

 upper jaw the longer; spinous and soft dorsals separate; cheeks fully 

 scaled; lateral line usually complete; pyloric coeca 5 to 8; shorter 

 than stomach. 



Color oliv^e-gray mottled with darker; spinous dorsal with 2 or 3 

 rows of round black spots; no large black blotch on posterior mem- 

 branes; soft dorsal with 4 or 5 irregular rows of rather indistinct 

 dusky blotches; a large black blotch at base of pectorals; caudal 

 yellowish, barred with dusky. 



Length i to i>^ feet. 



This fish inhabits the larger streams and lakes from the Assiniboin 

 River, through the Great Lake Region to Tennessee and Arkansas. 



Stizostedion vitreum (Mitchill). Wall-eyed Pike; Jack Salmon; 



Pike. 



Head 3.2 to 3.5; depth 4.3 to 5.2; D. xn or xiv — 191022; A. 11, 

 12 to 14; scales 80 to 89. 



Body slender, slightly compressed; head pointed, profile long 

 and straight; interorbital space flat; mouth large, terminal, the max- 

 illary reaching past pupil; snout i.$ to 3.8 in head; diameter of eye 

 4.6 to 6.0; upper jaw slightly the longer; spinous and soft dorsals 

 separated; cheeks usually sparsely scaled; lateral line usually com- 

 plete; pyloric coeca 3, about as long as stomach. 



Fig. 65. Wall-eyed Pike; Jack Salmon. 



Stizostedion vitreum (Mitch.). (After Forbes and Richardson.) 



Color olive-buff to yellowish, everywhere mottled with black; 

 sides with 5 large irregularly-shaped cross-blotches with smaller 

 blotches between; spinous dorsal with a narrow black margin and 

 with a dark spot on its last 2 membranes; soft dorsal indistinctly 

 barred. 



Length 3 feet. 



This species ranges from Minnesota to Hudson Bay, Maryland, 

 and Oklahoma. 



