290 FISHES. 



6. HYBOPS/S,* Agassiz. MINNOWS. 



* Mouth inferior, horizontal, small (rarely oblique, and the teeth 



4 4) ; dorsal over or in front of ventrals. 



f Teeth two-rowed ; body elongate, silvery, the head contained 

 5i to 6 times in total length, including caudal fin ; dorsal 

 fin beginning in front of ventrals; grinding surface of teeth 

 often more or less distorted or even obliterated. (Hudsonius, 

 Grd.) 



1. H. storer/anus, (Kirt.) Ag. STOKER'S MINNOW. 

 Silvery, scales with black dots, forming a dark lateral 

 stripe; snout blunt, about as long as eye; depth 5 in 

 length; D. I, 8; A. I, 7; lat. 1. 41. Great Lake region, 

 etc. 



2. H. hudsonius, (Clinton) Putnam. SPAWN -EATER. 

 Silvery, often with dark shades; snout much shorter than 

 eye, bluntly rounded; depth 4 in length; D. I, 8; A. I, 

 8; lat. 1. 38; teeth usually 2,4 4, 2. Lakes and rivers; 

 abundant eastward. (ITucZs. flumatilis, Grd.) 



3. H. amarus, (Grd.) Cope. " SMELT." Very similar, 

 but paler and with the snout much less decurved, less 

 blunt than the two preceding species; D. I, 7; A. I, 8; 

 lat. 1. 38; teeth usually 1, 44, 1. Penn. to Ga. (H. 

 phae'nna, Cope.) 



ft Teeth 44 ; body shorter, small ; head larger, 4| to 5 in length, 

 with caudal fin ; dorsal fin beginning over ventrals ; small 

 species, usually without bright colors. (Alburnops, Grd.) 

 \ Mouth inferior or horizontal, small, 

 a. Lateral line 43 to 45 ; a spot on dorsal fin m front. 



4. H. tuditanus, Cope. Form, coloration and dentition 

 of Hyborhynchus notatus, but with the alimentary canal 



* I follow custom in retaining the name Hybopsis for this group, but I 

 believe no one knows certainly for what Agassiz intended it. It is not unlikely 

 that his "Hybopsis gracilis," the type of his genus, was a species of Nocomis, 

 probably N. winchelli. In that case, our genus "Nocomis" should be called 

 Hybopsis, and our "Hybopsis," Alburnops. 



