ESOCID^E. Oil. 267 



Great Lakes and headwaters of the Mississippi. A fine 

 species reaching a length of 3 to 4 feet. (E. estor, 

 lucioides, borexs^ etc., of authors.) 



*** Cheeks and opercles scaly; branchiostegals 12 to 15; species 

 of moderate or small size, reticulated or barred with dark 

 green on a lighter ground sometimes plain. (Pickerels.) 



f Branchioslegals 14 to 16; snout prolonged; front of eye nearly 

 midway in head. 



3. E. reticulatus, LeSueur. COMMON .EASTERN PICK- 

 EREL. GREEX PIKE. Head 3^ in length; the snout 

 much prolonged; front of eye about midway in head; 

 eye more than three times in snout; green, sides with 

 a network of brown streaks; B. 1-4 to 16; D. 16 to IS; 

 A. 15 to 17; lat. 1. 120 to 130. Streams of Atlantic 

 States abundant, but not found far in the interior; 

 smaller than the preceding, but much larger than the 

 next. 



ff Branchiostegals normally 12 ; front of eye nearer tip of snout. 



4. E. cypho, Cope. HUMP-BACK PICKEREL. Resembles 

 E . salmoneus, but may probably always be known by 

 the elevated back and broad swollen ante-dorsal region. 

 Colors usually plain or somewhat reticulate. Western 

 States. 



5. E. americanus, Gmelin. BANDED PICKEREL. 

 TROUT PICKEREL. Head 3| in length, the snout much 

 shorter than in the preceding; eye much nearer snout 

 than opercular margin, its diameter less than 3 in snout; 

 dark green; sides with about twenty distinct blackish 

 curved bars, scarcely reticulated; B. 12; D. 13; A. 13; 

 lat. 1. 100; length scarcely a foot. Atlantic streams, with 

 the preceding. (E. niger, scomberius, fasciatus and 

 ornatus of authors.) (Represented S. of Va. by E. ra- 

 venelii, Holbr.) 



