42 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY — III. 



Comnaivd witli P. niveiis, P. Ici((<)i)us lias a (liil'erent form, tlie dorsal 

 regfion is less elevated, and the imclial region less depressed. The inoutli 

 is larger, the maxillary extending- to nearly opposite tlu; eye, instead of 

 tailing short. The eye is larg«*r and the montli is less interior in P. Icu- 

 copus. The eoloratiou is somewhat dili'erent. 



Fhotogvnis leucopm also resembles Codoina evrysioma, but that species 

 has a heavier head, larger eye, stouter body, and different dentition and 

 coloration. 



Genus CODOMA Girard. 

 9. CODOMA EURYSTOMA Jordan. 

 I'hoiogeiiia euri/stomus Johdan (1677), Aun. Lye. Nut. Hist. o'U). 



This.is the most abundant Cyprinoid in the tributaries of the Chat- 

 tahoochee lliver. It frequents especially the cold streams, but does not 

 seem to be adveise to mud. In iSuwannee Creek, a deep, cold, muddy 

 stream flowing tliioiigh the woods, this was almost the only species 

 obtained. 



Its life-colors are as follows : General color ol LuxHuh cornvtus on body, 

 but the sides with considerable coi)pery lustre. Dorsal fin with a sharp, 

 blacU, horizontal bar about half-way np. In young fishes, this bar is 

 red. The fin above is somewhat niilUy ; below, it is pale. There is a 

 small, but distinct, round, black, caudal spot. The caudal tin is ehietly 

 of a rather dull ferruginous red. The base of the tin is pale, the tips 

 rather milky. The anal fin is unmarked. There are gilt lines along the 

 back and sides'. A dark humeral l»ai- is usually present, and the up[)er 

 edge of the pectoral fin is largely black. 



The teeth of this species are usually 1, 4—1, 1, as at first described, 

 but we have found several individuals 1, 4-4, 2. This species resembles 

 somawhwt Phn(o(jcnis Icuoopun^ but it is stouter every way, with (leeper 

 body, larger head, and much larger eye. 



10. C0D0:\IA FORMOSA {Putnam) Jordan. 



(Albunius formoHHS I'litiiaii), Lntfisvus hi/psdoplcnts Giinther, riiologmis gntndij^iutiiii 



.Ionian.) 



The typical specimens of /*. <iranilipitints are suppo.sed to have beet 

 coUected in Flint IJiver. 7yrf/c»,s(W/.s' //^y;,sr.oj>/t7«.s' of C lint her is doubt less 

 the same species. We follow (Hint her in identifying AWurnm formosus 

 Putnam as the same, although there is little in the very imperfect orig- 

 inal d(»scription to wairant it. 



