282 FISHES. 



4. H. spectrunculus, Cope. Eye large; head broad 

 and flat; a plumbeous lateral band and black caudal 

 spot; fins reddish; A. I, 9. Holston R. 



5. H. stramineus, Cope. Silvery; head more rounded; 

 body plump; scales in front of dorsal 12 to 14, quite 

 large. Mich, to Ind., abundant. 



aaa. Lat. 1. 32 or 33. 



6. H. procne, Cope. Very similar, but the caudal 

 peduncle contracted and slender, scales large; a plumb- 

 eous band over black pigment. D. I, 8; A. I, 7. Penn., 

 etc., common E. 



$. Pectorals elongated, nearly or quite reaching ventrals. 



7. H. microstomus, (Raf.) Jordan. LONG-HEADED 

 MINNOW. Head elongated; a silvery band along sides 

 and a series of black dots along lateral line; depth 5 in 

 length; caudal peduncle not abruptly contracted; pec- 

 torals long, about reaching ventrals; D. I, 8; A. I, 7; 

 lat. 1. 33. Va. to Ky. [J?. gracilis, Ag. (type of genus.) 

 If. longiceps, Cope.] 



8. H. volucellus, Cope. Elongated ; head long ; a 

 dusky lateral band; D. I, 8; A. I, 7; lat. 1. 34. Detroit 

 R., (same as preceding?) 



** Mouth larger, oblique, the lower jaw about as long as upper. 



(Alburnops, Grcl.) 

 b. Lateral line 35 or 36, a dark lateral band. 



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

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

 lateral band very distinct, shining black; A. I, 8. Penn., 

 N. J.; one of the smallest of the Cyprinidm; length 1-|- 

 inches; (resembles Hemitremia bifrenata.') 



10. H. fretensis, Cope. Silvery, a plumbeous lateral 

 band; A. I, 8. Detroit R.; resembles a Minnilus. 



W. Lateral line 38 to 39. 



