292 FISHES. 



ft Mouth larger, oblique; the jaws about equal. 

 b. Lateral line 35. 



11. H. fretens'iSf Cope. Body compressed and elong- 

 ate, as in the genus NotropiB} lateral line decurved; 

 seventeen rows of scales in front of the dorsal; a broad 

 plumbeous shade on sides. Mich, to 111. 



bb. Lateral line 44. 



12. H. hcBtnaturuSf Cope. RED -TAILED MINNOW. 

 Lateral line nearly straight; colors dull; sides not silvery; 

 a dusky spot at base of caudal; caudal fin dull, brick- 

 red; anal short, I, 7. Tributaries of Lake Michigan. 



** Mouth oblique, the jaws about equal; dorsal distinctly behind 

 venlrals ; teeth two-rowed ; 1 or 2, 4 4, 1 or 2. (Hydrophlox, 

 Jor.) 



13. H. lacertosus, Cope. A large dull-colored species 

 with broad, deep head, 4 in length, and large scales; 

 mouth wide; eye large; silvery, dusky above. Tennessee 

 River. 



14. H. plumbeolus, Cope. Body compressed, elongate ; 

 lower jaw projecting; color uniform silvery; A. I, 9; lat, 

 1. 39; teeth 2, 4. Great Lakes. 



15. H. chalybceus, Cope. PIGMY MINNOW. Muzzle 

 flat; head 4 in length; caudal peduncle abruptly slender, 

 lateral band very distinct, shining black; A. 1, 8; lat. 1. 

 36. Penn., N. J.; one of the smallest of the Cyprinidce; 

 length 1% inches; (resembles Hemitremia bifrenata.) The 

 males in the spring are brilliantly colored, the lower parts 

 being largely orange. 



16. H. rubricroceus, Cope. CRIMSON FALL FISH. A 

 small, rather deep-bodied species having somewhat the 

 form of a Notropis ; lower jaw rather longest; 19 rows 

 of scales in front of the dorsal; lat. 1. 38; coloration most 

 brilliant; clear greenish and silvery; males brownish 



