290 FISHES. 



6. HUDSONIUS* Girard. 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. storerianus, (Kirt.) Grd. STORER'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. fluviaiilis, Grd. 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. (Huds. flumatilis, Grd.) 



3. H. amarus, (Grd.) " 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, 4 4, 1. Penn. to Ga. (H. 

 phaenna, Cope.) 



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

 with caudal fin ; dorsal fin beginning over ventrals ; small 

 species, usually without bright colors. 

 J Mouth inferior or horizontal, small. 

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



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

 of Hyborhynchus notatus, but with the alimentary canal 



The name Hybopsis, usually applied to this genus, was apparently based 

 on a species of Ceratichthys. Alburnops , also sometimes used, on species of 

 Z/uzilu*. 



