FISHES OF THE CHATTAHOOCHEE BASIN. 41 



APIIODODERIDJB.. 



Genus APHODODERUS Le Sueur. 



7. Aphododbkus say anus [Gill) DcK. 



The specimeu described iu Bulletiu l^o. 10, U. S. Nat. Mus., as Aster- 

 notremia mesotrema Jor., doubtless belongs to this species. The " genus " 

 Aster notremia is probably an immature stage of Aphodod ems. 



OYPRINID^. 



Genus PHOTOGENIS Cope. 



8. PHOTOGENIS LEUCOPUS, Sp. nOV. 



A slender, rather i)laiu species, closely resembling Photofjenis nireus 

 from the Saluda. 



Body elongate, compressed, tapering toward the snout and the long 

 caudal peduncle. Depth 4^ in length. Head moderate, 4^ in length, 

 larger than in P. niveus, rather i^ointed, wide on top. Snout rather 

 long and somewhat pointed. Mouth large, quite oblique, the intermax- 

 illaries on the level of the pupil : upper jaw slightly longest. Eye 

 moderate, rather less than snout, 3^ in head. Scales moderate, rather 

 closely imbricated, but less so than in P. analostamis, 0-39-3. 



Fins moderate, D. I, 8, A. I, 8, the dorsal evidently behind the ven- 

 trals. Pectorals not reaching nearly to veutrals, the latter not quite to 

 vent. Neither dorsal nor anal specially elevated. 



Teeth 1, 4-4, 1, hooked, with narrow grinding surfaces and usually 

 somewhat creuate. 



Color olivaceous, the sides bright silvery : a rather inconspiciious 

 dark blotch on last rays of dorsal, as in related species. A round black 

 spot, nearly as large as eye, at base of caudal, precisely as in Codoma 

 eurystoina. In life, the coloration is pale ', the dorsal fin is chiefly of a 

 clear yellowish-green color, as though yellowish pigment were mixed 

 with white ; the upper part is of a pale ferrugineousred and the extreme 

 tip milky-white. The caudal fin is ferrugineous, with miik-white tips. 

 The lower fins, especially the ventrals, are milk-white. The snout iu 

 males is tuberculate, and very minute prickles occur on the sides of the 

 caudal peduncle. Length 3i to 4 inches. 



Very abundant in the Chattahoochee Eiver at the Shallow Ford ; not 

 noticed elsewhere. 



