40 VERTEBRATE ANIMALS OF THE UNITED STATES 



Co Maxillary extending to middle of eye. 



di Scales about 70; in Lake Michigan L. hoyi. 



d2 Scales about 77; in Lake Superior L. zenithicus. 



3.2 Body short, deep, compressed; no teeth; colors dark. 



bi Depth 7,. 2; adipose fin very small L. nianitoulinus. 



bo Depth 2.5 to 3; adipose fin large, longer than the eye L. tullibee. 



L. harengus (Richardson). Length 300 mm.; head 4.3; depth 4.5; 

 body elongate; color dark bluish above; silvery on the sides; rays of 

 dorsal fin 11; anal 12; scales 10-83-9; adipose fin very small : shallow 

 waters of Lake Huron and Michigan ; very abundant. 



L. osmerijormis (H. M. Smith) Smelt. Length 250 mm.; head 4; 

 depth 5 or '6; color grayish above; sides bright silvery; rays of dorsal 

 fin 9; anal 13; scales 9-83-10; body elongate and slender; mouth large, 

 with teeth on tongue; adipose fin very small: in lakes of central New 

 York. 



L. 5i5Co (Jordan) . Cisco. Length 2 50 mm.; head 4.3 to 5; depth 4.1; 

 color deep blue above, changing to silvery below the lateral line; back 

 dotted with black; rays of dorsal fin 9 to 10; anal 12; scales 77; body 

 elongate: in small lakes of northern Indiana and southern Wisconsin. 

 L. huronis (Jordan & Evermann). Blueback. Length 300 mm.; 

 head 4.6; depth 4.2; rays of dorsal fin 10 or 11; anal 11 or 12; scales 75 

 to 85; body very elongate, elliptical: Lakes Huron and Michigan, 

 occasionally in Lake Erie; common. 



L. ontariensis J. & E. Length 300 mm.; head 4.5; depth 4; color 

 dark blue above, silvery on the sides; rays of dorsal fin 10; anal 11; 

 scales 9-76-8; body elongate, elliptical: Lakes Ontario and Cayuga; 

 common. 



L. artedi (LeSueur). Common lake herring. Length 300 mm.; 

 head; 4.5; depth 3 to 4; color gray or greenish; sides silvery; rays of 

 dorsal fin 10; anal 12; scales 8-69 to 75-7; body elliptical; head long, 

 compressed and pointed: Lakes Erie and Ontario, and neighboring 

 small lakes; very abundant, occurring along the shores in immense 

 schools; the most important of the lake herrings commercially. 



L. eriensis (J. & E.). Jumbo herring. Length 450 mm.; head 4.4; 

 depth 3.4; color dark above, without blue shades; rays of dorsal and anal 

 fins 1 1 ; scales 7 1 ; body very deep and robust : Lake Erie, especially in the 

 northern portion, occasionally in Lake Huron; abundant; the best of the 

 lake herrings as a food fish. 



L. supernas J. & E. Head 4.4; depth 4; color silvery; rays of dorsal 

 fin 10; anal 12; scales 8-76-7; lower jaw projecting: Lake Superior, in 

 deep water. 



