CYPRINID^. — CVIII. 291 



short, and the dorsal spine not distinct; olivaceons; 

 scales black edged; 27 scales in front of dorsal fin. In- 

 diana; a species unknown to me. 



aa. Lateral line 36 to 37. 



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

 and flat; a plumbeous lateral band and black caudal spot; 

 fins reddish; A.. I, 9. Tennessee River. 



6. H. stramineus, Cope. Straw-Coloked Minnow. 

 Mouth small; snout very obtuse; body rather stout; 

 coloration pale; I'Z to 15 large scales in front of dorsal; 

 a small, pale, insignificant species. Common in our 

 Western streams. 



aaa. Lateral line 31 to 33. 



7. H. procne, Cope. Scales large; caudal peduncle 

 contract?ed and slender; dorsal region compressed and 

 elevated; muzzle very obtuse; a plumbeous lateral band 

 over black pigment; Y>. I, 8; A. I, 7. Pennsylvania 

 N. J., etc., common; one of the smallest species. 



8. H. missuriensis, Cope. Form stout, with large head 

 and thick caudal peduncle; twelve scales before dorsal; 

 colors rather pale; D. I, 8. Missouri, etc. 



9. 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, nearly reaching ventrals; D. I, 8; A. I, 7; 

 lat. 1. 33. Va. to Ky. {H. longiceps^ Cope^ 



10. H. volucellus^ Cope. Long -Finned Minnow. 

 Head flattened, elongate, 3f in length; pectoral fins 

 unusually long, reaching to ventrals; caudal peduncle 

 slender; olivaceous, a dusky lateral band. Michigan and 

 Wisconsin. 



