OYPRiiaD^.-^vin. 291f 



short, and the dorsal spine not distinct; olivaceous; 

 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. Steaw-Coloebd Minnow. 

 Mouth small; snout very obtuse; body rather stout; 

 coloration pale; 13 to 15 large scales in front of dorsal; 

 a small, pale, insignificant species. Common in our 

 Western streams. 



aaa. Lateral line 81 to 83. 



'i(, H. procne. Cope. Scales large; caudal peduncle 

 contracljed and slender; dorsal region compressed and 

 elevated; muzzle very obtuse; a plumbeous lateral band 

 over black pigment; D. 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. miorostomus, (Raf.) Jordan. Long-Headbb, 

 Minnow. Head elongated; a silvery band along sides 

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

 length; caudal peduncle not abruptly contracted; pec-^ 

 torp,ls long, nearly reaching ventrals; D. I, 8; A- 1» 7j 

 lat. 1. 33. Va. to Ky. {S. longiceps. Cope.) 



10. H. volucellus. Cope. Long-Finnbd Minnowv 

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

 unusually long, reaching to ventrals; caudal peduncle 

 slender; olivaceous, a dusky lateral band. MichigftR and 

 Wisconsin. 



