FISHES OF THE CHATTAHOOCHEE BASIN. 41 



APHODODERIDA. 

 Genus APHODODERUS Le Sueur. 



7. APHODODERUS SAY ANUS (Gill) DeK. 



The specimen described ill Bulletin Xo. 10, U. S. Xat. Mus., as Aster- 

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

 Aster not remia is probably an immature stage of Aphododerus. 



OYFKINIDJB. 



Genus PHOTOGENIS Cope. 

 8. PHOTOGENIS LEUCOPUS, sp. nov. 



A slender, rather plain species, closely resembling Photogenis nii'eus 

 from the Salnda. 



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

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

 larger than in P. niceus, rather pointed, wide on top. Snout rather 

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

 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. analostanus, G-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 inconspicuous 

 darjk 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 

 eurystoma. 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 ferrugineous-red and the extreme 

 tip milky-white. The caudal fin is ferrugiueous, with milk-white tips. 

 The lower fins, especially the veutrals, are milk-white. The snout in 

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

 caudal peduncle. Length 3 to 4 inches. 



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

 noticed elsewhere. 



