Fishes of Upper Georgia. 329 



1. The reference of Girard's Hybopsis wincheUi to this 

 species renders necessary the substitution of an older appel- 

 lation for the well-chosen name hyalinus. 



2. Rafinesque's short description of his Rutilus amblops 

 from the falls of the Ohio (where this species abounds) may 

 apply to the hyalinus (but might apply to two or three other 

 fishes, but not as well). 



3. Grirard identifies Rutilus amblops as a species of Cera- 

 tichthys, and catalogues it as such. He gives no descrip- 

 tion ; but as Rafinesque's account would apply to neither of 

 the two other species in that region (iV. biguttatus, JST. dis- 

 similis), Girard probably intended the name C. amblops 

 for the species since called C. hyalinus by Prof. Cope ; and 

 we should accept Girard's identification as correct, until it is 

 proved to be positively erroneous. 



4. Where the adoption of a specific or generic name is to 

 any extent a matter of choice, in the opinion of the present 

 writer, preference should always be given to a descriptive 

 name over a personal one. 



Comparison of specimens from the Ohio, French Broad, 

 Clinch, Etowah, Ocmulgee, and other rivers, shows several 

 differences, but none which are in my opinion sufficiently 

 constant or decided to be deemed of specific value. 



Three varieties may probably be recognized, as follows : — 



Head broadest; eye largest, 3 in head, its length greater than 

 the width of the broad interorbital space ; snout blunt, 

 probably never tubereulate, mouth largest, the lower 

 jaw being rather short; barbels long; color variable, 

 usually hyaline, with a black lateral shade ; size probably 

 largest ; depth 5 in length ; teeth 1, 4-4, 1. Habitat. Ohio 

 Valley. amblops. 



Head narrower: eye large, 3 in head, much wider than the 

 rather narrower interorbital space ; snout bluntish, less 

 so than in the preceding; not noticed as tubereulate; 

 barbels shortest, decidedly shorter than in the preced- 

 ing; colors rather dark, the dark lateral stripe passing 



