Fishes of Upper Georgia. 333 



Cope, but an examination of Cope's types, has convinced me 

 that it is distinct. P. uranops has a longer and narrower 

 head and more upward range to the eyes ; and the dorsal is 

 considerably nearer snout than caudal. 



In P. catostomus, the dorsal is nearly midway, the cheeks 

 more swollen, and the mouth less inferior. The scales appear 

 smaller. 



The species now known of this genus are the following ; 

 teretulus Cope, mirabilis Grd., liosternus Nelson, scopiferus 

 Cope, catostomus Jordan, and uranops Cope. The genus 

 Sarcidium is not distinguishable, and it has been abandoned 

 by its author. 



HYBOPSIS. 



= Hybopsis Agassiz, Amer. Journ. Sci. Arts, 1854, 358. (Type H. 

 gracilis Agassiz). 



> Alburnops Girard, Proc. Phil. Ac. Sci., 1856, 194. (Type A. blen- 

 nius Grd.) 



>Hudsonius Girard, Proc. Phil. Ac. Sci., 185G, 210. (Type Clupea 

 hudsonia Clinton). 



22. HYBOPSIS GRACILIS. 



Hybopsis gracilis Agassiz, Amer. Journ. Sci. Arts, 1854, 358. Girard, 

 Proc. Phil. Ac. Sci, 1856, 211. Cope, Cyp. Penn., 1866, 381. 



A few specimens of this species were found mixed with 

 those of Nocomis winchelli from the Etowah River. The 

 differences between the two were not noticed while in the 

 field. //. gracilis is, however, a genuine Hybopsis, and 

 is distinct from any species known to the author. My spec- 

 imens do not enable me to add anything of importance to 

 Prof. Agassiz's description. 



23. HYBOPSIS CHROSOMUS. Sp. nov. 



? ? Chrosomus erythrogaster Agassiz, Amer. Journ. Sci. Arts, 1854, 359 (not 

 of Raf. ?) 



A small Hybopsis abounds in tributaries of the Etowah 

 and Oostanaula about Rome, Ga. 



