31. CYPRINID.E CLIOLA. 183 



caudal charged witli satiii-wliite pigment ; the fins otherwise all of a 



clear, bright yellow. Females and young with the markings obscure, 



the blue lateral band usually evident. Head 4^ ; depth 4|. D. 8; A. 



Sj scales 6-38-35 teeth 1, 4-4, 1. L. 3 inches. Alabama Basin. 



(Photogenis cwruleus Jordan. Aun. Lye. Nat. Hist. N. Y. 187(), 3:}8: Codoma cwrulea Jor- 

 dan, Bull. U. S. Nat. Mus. xii, 52, 1876.) 



255. C chlorisJia Jordan &. Bruyton. 



Body short and deep, strongly compressed, the form ellii»tical, as iu 

 C. pyrrhomelas^ but rather deeper. Head rather small and pointed. 

 Mouth quite oblique, the maxillary not reaching the line of the orbit, 

 the upper jaw projecting beyond the lower, i)remaxillary on the level of 

 the pupil. Eye small, less than snout, 4 in head. Lateral line decurved. 

 Fins moderate. Nuptial tubercles covering the whole body, except the 

 siiace anterior to the ventrals and below the lateral line; those on the 

 body much smaller than those on the head. Coloration dark steel-blue; 

 a very distinct blue stripe along each side of caudal peduncle ; back clear 

 green; lower i)art of sides abruptly milk-white; black dorsal blotch large, 

 the lower part of the tin with bright pale-green pigment, the tip milky ; 

 caudal dusky, its tips milky, its base pale; anal and ventrals milky, a 

 faint dusky spot on last rays of anal ; iris white. Females slenderer and 

 less brightly colored ; no caudal spot. Head 4; depth 4. D. 7; A. 8; 

 scales 5-37-3 ; teeth 1, 4-4, 1. L. 3 inches. Santee Basin, South Caro- 

 lina. 



{Codoma chlorinlia Jordan tS: Braytou, Bull. U. S. Nat. Mus. xii, 21, 1878.) 

 Ik. No dark blotch on upper j)osterior jiart of dorsal. 



256. C. xonata (Agassiz) Jor. &, Gilb. 



Physiognomy of Ceratlchthys dissimilis. Body elongate, not elevated. 

 Head elongate. Mouth small, nearly horizontal, the maxillary reaching 

 beyond line of orbit, the mandible somewhat projecting. Eegion iu 

 front of dorsal fin more or less bare of scales. Eye large, 3J in head. 

 Dorsal beginning opposite ventrals, nearer snout than base of caudal. 

 Olivaceous silvery belosv; a broad, silvery lateral band, with dark 

 specks ; sides of head with black specks ; a dark vertebral band. Head 

 4 ; depth 4J. D. 7 ; A. 8 ; scales 6-3G-4; teeth 1, 4-4, 1. L. 3 inches. 

 Korth Platte Eiver {Cope) ; Osage Eiver (Agassiz). 



{Alhiirnus zonafns Pulnani, Bull. Mus. Comp. Zoiil. i, 9, 18G3 : Photogenis piptolepis 

 Cope, Ilaydc'u's Geol. Surv, Terr. Wyoni. 1870, 438 : Leudnvus zonatua GUuther, vii, 



