274 Field Museum of Natural History — Zoology, Vol. VII. 



Illinois; Wolf Lake, Roby, Indiana; Lake Michigan, Edgemoor, 

 Indiana. 



Notropis rubrifrons (Cope). Rosy-faced Minnow. 



Head 4.3 to 5.0; depth 4.8 to 5.8; D.8; A. 9 to 11; scales 36 to 40. 



Body elongate, moderately compressed; head long, conic; snout 

 pointed; mouth large, oblique, terminal, tip of upper lip on level 

 with middle of upper margin of pupil; maxillary reaching front of 

 orbit, its length 2.7 to 3.1 in head; snout 3.0 to 3.4; diameter of eye 

 3.2 to 3.6; teeth 2, 4-4, 2, grinding surface slight; alimentary canal 

 less than length of the body; peritoneum silvery with brown specks; 

 dorsal fin well behind ventrals, and nearer base of caudal than tip of 

 snout; lateral line complete; 17 to 21 rows of scales in series before 

 dorsal fin. 



Color dark olive above, silvery below, a faint dark lateral band; 

 no caudal spot. 



Length 2% inches. 



This fish inhabits clear water, ranging from New York to Michigan 

 and Kansas. 



Hickory Creek, New Lenox, Illinois. 



Notropis umbratilis (Girard). Redfin. 



Head 3.7 to 4.3; depth 3.2 to 4.2; D. 8; A. 10 to 12; scales 41 



to 48. 



Body elongate, compressed; head conic; snout pointed; mouth 

 moderate, terminal, oblique, tip of upper lip above lower margin of 

 pupil; maxillary reaching front of orbit, its length 2.7 to 3.2 in head; 

 snout 2.8 to '^.i\ diameter of eye 3.4 to 4.2 in head; teeth 2, 4-4, 2, 

 with grinding surface on median teeth ; alimentary canal shorter than 



■^^ 



Fig. 39. Redfin. 



Notropis umbratilis (Girard). (After Forbes and Richardson.) 



