Jordan and Evermann. Fishes of North America. 317 



snout, which is considerably decurved; barbel short, !- in eye; eyes very 

 small, high up, midway of head; interorbital width eq^ial to width of 

 inouth, about 3 in head. Caudal peduncle very long and slender. Fins 

 moderate ; origin of dorsal a little nearer snout than base of caudal, 

 directly over base of ventrals ; free edge of dorsal fin slightly concave, 

 the anterior ray but little produced, its length If- in head ; free edge of 

 anal little concave, length of first rays If in head ; pectorals much 

 shorter than in JT. meeki, 1 in head, the first rays not produced nor fila- 

 mentous, and not reaching ventrals ; ventrals barely reaching vent, 1& in 

 head ; caudal very long and deeply forked, the lobes as long as head, the 

 lower slightly the longer. Lateral line complete, straight; teeth 4-4, 

 strongly hooked. Color, sides silvery, pale below, scales of back each 

 with a group of fine dark specks on posterior border, these extending 

 almost to lateral line ; rest of back and upper part of sides sparsely 

 dusted over with minute brownish specks; fins all pale except the cau- 

 dal, the lower lobe of which is dark, with a narrow white border below ; 

 upper lobe slightly dark at base. From Hybopsis meeki, which it most 

 closely resembles, this species may be distinguished by the much 

 longer and more pointed snout, the smaller eye, the much shorter pectoral 

 fins, and the darker coloration of the back. Middle Missouri River 

 basin from Wyoming to eastern Nebraska, locally common, but hitherto 

 overlooked; our specimens from Powder River at Arvada, Wyoming, 

 collected by Cox and Gillum. (gelidus, frozen.) 



Gobio gelidus, GIBARD, Proc. Ac. Nat. Sci. Phila., 1856, 188, Milk River, Montana. (Coll. 



Suckley.) GIRARD, Pac. B. R. Surv., 248, 1858. 

 Ceratichthys gelidus, JORDAN & GILBERT, Synopsis, 216, 1883, (in part). 



524. HYBOPSIS MEEKI, Jordan & Evermann, new species. 



Head 4; depth 5|. D. 8; A. 8; lateral line 44. Body very slender, not 

 elevated. Snout long, thick, blunt, overhanging the rather large mouth. 

 Barbel as long as eye. Head slender and elongate. Eye small, rather 

 high, 4^ in head. Mouth small, subterminal, the maxillary not extending 

 to eye. Fins all large; pectoral as long as head; caudal deeply forked. 

 Lateral line decurved ; scales rather large. Coloration silvery, unspotted ; 

 a dusky lateral streak ending in a blackish spot at base of caudal ; lower 

 .lobe of caudal abruptly black, edged below with white. Male with the 

 nuptial tubercles excessively developed, covering most of the body. 

 Length 2 inches. Missouri River at St. Joseph and elsewhere, in the 

 river channel; the types (No. 35889) collected by Jordan and Meek. A 

 curious little fish, heretofore confounded with H. gelidus. (Named for 

 Dr. Seth Eugene Meek, of the University of Arkansas.) 



CeraticldJiys gelidm, JORDAN & GILBERT, Synopsis, 216, 1883, (in part). 

 Hybopsis gelidiu, JORDAN & MEEK, Proc. U. S. Nat. Mus., 1885, 10. 



525. HYBOPSIS MONTANUS, Meek. 



Head 3; depth 5. D. 8; A. 6; scales 4-37-4, 14 before dorsal; teeth 4-4. 

 Body slender, little elongate, the eye high up, 3f in head ; snout blunt, 

 rather long, 3 in head; mouth rather large, inferior, the lower jaw 

 included; the maxillary past front of eye; barbel long. Dorsal above 



