FISHES OF THE CHATTAHOOCHEE BASIN. 41 



APIIODODERID.^. 

 Genus APIIODODERUS Le Sueur. 



7. Aphododekus say anus {Gill) TJeK. 



The specimen described iu Bulletin No. 10, U. S. Nat. Mus., as Aster- 

 notremia mesutrema Jor., doubtless belongs to this species. Tlio " genus " 

 Asternotremia is probably an immature stage of Aphododcrns. 



CYPEINID^. 



Genus PHOTOGENIS Cope. 

 8. Photogenis leucopus, sp. nov. 



A slender, rather plain species, closely resembling P/iOifo^enis nircus 

 from the tSaluda. 



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

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

 larger than in 1*. niveus, rather pointed, 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.J 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 crenate. 



Color olivaceous, the sides bright silvery : a rather inconspicuous 

 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 i)ale ferrugineousred and the extreme 

 tip milUy-white. The caudal fin is ferrugineous, with milk-white tips. 

 The lower fins, especially the ventrals, aie 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 Kiver at the Shallow Ford ; not 

 noticed elsewhere. 



