Fishes of Upper Georgia. 



331 



RHINICHTHYS. 



Argyreus Heckel, Russeger's Eeisen, 1843, 1, 1040 (or "Fische 

 Syriens, 1843, 50"). (Type Gyprinus atronasus Mit. ; name preoccupied.) 



Rhinichthys Agassiz, Lake Superior, 1850, 353. (Type Gyprinus 

 atronasus Mit.) 



20. RHINICHTHYS OBTUSUS. 



Rhinichthys obtusus Agassiz, Amer. Jour. Sc. and Arts, 1854, 357. Jor- 

 dan, Man. Vert., 1876, 280. 

 Argyreus obtusus Girard, Proc. Phil. Ac. Sc, 1856, 185. 

 Rhinichthys obtusus Giinther, Cat. Fishes, VII, 1868, 190. 

 Rhinichthys lunatus Cope, Proc. Phil. Ac. Sc, 1864, 278; Journ. Phil Ac 

 Sc, 1869, 228. Jordan, Ind. Geol. Survey, 1874, 223; Man. 

 Vert., 281. 

 Argyreus lunatus Cope, Proc. Am. Phil. Soc, 1870. 



Georgia specimens of this species are shorter, and darker 

 than typical lunatus, and they have the lateral band quite faint. 

 All have a dusky blotch in the middle of the base of the 

 dorsal ; and some specimens (males) in all cases have traces 

 of a rosy lateral band. These also have the pectoral some- 

 what enlarged. 



The following table shows the measurements of a number 

 of specimens of Rhinichthys from different regions : 



