276 Bulletin 47, United States National Museum. 



Mouth quite large, very oblique, the maxillary reaching anterior margin 

 of eye, the premaxillaries on level of middle of pupil. Lateral line con- 

 siderably decurved, usually with an abrupt angulation between pectorals 

 and ventrals ; 19 scales before dorsal. Fins moderate ; dorsal well behind 

 ventrals. Nuptial tubercles sparse on the head; caudal peduncle and 

 sides, as far forward as the ventrals, tuberculate in spring males. Males 

 bright steel-blue above ; sides bright white ; a large black spot at base of 

 caudal, precisely as in N. callistius; dorsal fin with a broad, dusky, hori- 

 zontal band at base, the membrane of the last rays jet-black, the tip 

 milk-white, the rest of the fin of a bright, pale vermilion-red; caudal 

 rosy, its tips white ; anal and ventrals milky. Females duller, but the 

 black markings distinct. Length 3^ inches. Alabama Basin ; abundant 

 in clear streams, with the preceding and the next, (rpetf, three; ^pwf, 

 color ; lariov, sail.) 



Codoma trichroislia, JORDAN & GILBERT, Bull. TJ. S. Nat. Mus., xn, 1878, 50, Etowah River, 



etc., Rome, Georgia. (Type, No. 31131. Coll. Jordan & Gilbert.) 

 Cliola trichroistia, JORDAN & GILBERT, SynopBis, 181, 1883. 



444. NOTROPIS CALLISTIUS (Jordan). 



Head 4&; depth 4f ; eye large, 3f. D.8; A. 8; scales 5-40-3; teeth 1, 

 4-4, 1. Body rather stout and compressed, rather heavy forward, the 

 dorsal outline considerably elevated. Head stout and rather blunt, its 

 upper part flattish ; the nuptial tubercles not numerous, arranged in a 

 few distinct, longitudinal rows, not scattered without order, as in related 

 species. Mouth large, nearly horizontal, slightly overlapped by the heavy 

 snout, the maxillary reaching nearly to eye, the premaxillaries anteriorly 

 entirely below level of orbit. Scales large, not very closely imbricated, 

 16 in front of dorsal. Fins rather large, the height of the dorsal in males 

 nearly one-fifth length of body. Coloration dark and brilliant; males 

 with the back very dark steel-blue ; sides a clear silvery violet; belly 

 and lower fins satin-white; a heavy black blotch on posterior part of 

 dorsal, extending downward and forming a horizontal bar at base of fin; 

 rest of the fin vermilion, except the milk-white tip ; caudal fin bright red, 

 yellowish at base, milky at tip ; a broad, golden vertebral band and a 

 reddish lateral streak ; a large, distinct, round black spot at base of cau- 

 dal. Females olivaceous, with less black ; the fins dull reddish. Length 

 4 inches. Alabama Basin. (/caJUof, beauty ; lariov, sail, i. e. dorsal fin.) 



Photogenis callistius, JORDAN, Ann. Lye. Nat. Hist. N. T., 1876, 337, Etowah River, etc., Rome, 



Georgia. (Type, No. 17882. Coll. Jordan & Gilbert.) 

 Codoma callistia, JORDAN, Bull. U. S. Nat. Mus., xu, 52, 1878. 

 Cliola callislia, JORDAN & GILBERT, Synopsis, 181, 1883. 



445. NOTROPIS EURYSTOMUS (Jordan). 



Head 4 ; depth 4i ; eye moderate, 3in head. D. 8 ;. A. 8 ; scales 6-39-3; 

 teeth 1, 4-4, 1, with narrow grinding surfaces, the edges of which are 

 usually crenate. Body elongate, compressed, tapering toward the snout 

 and the long caudal peduncle. Head moderate, larger than in N. niveus, 

 rather pointed, wide on top ; snout rather long. Muzzle large, quite 

 oblique, the premaxillaries on the level of the pupil ; upper jaw slightly 



