31. CYPRINID^E CERATICHTHYS. 217 



Head 3; depth 5. D. 8; A. 8; Lat. 1. 44. L. 2 inches. Milk River, 

 Montana. (Girard.) 



(Gobio gelidus Grd. Proc. Acad. Nat. Sri. Pliila, 1856,188, and U. S. Pac. R. R. Surv. 

 248.) 



*** Species of small size, with the mouth subinferior and horizontal, with thickened 

 lips; the dorsal fin inserted sliyhtly behind the ventrals, usually with a black 

 blotch on its last rays; scales rather large, silvery. 



338. C. labrosus Cope. 



Body slender, little compressed, the back not elevated. Head long, 

 gently decurved to the muzzle, which scarcely overhangs the mouth. 

 Mouth entirely horizontal, the maxillary reaching the orbit. Eye 3| in 

 head. Dorsal inserted slightly behind origin of ventrals (not directly 

 over, as stated in original description). Lips thickened. Barbels very 

 long. Color silvery; sides sometimes with vague, dusty cross-bars. 

 Head 4|; depth 5. D. 8; A. 8; scales 6-34-4; teeth 1, 4-4, 1. L. 2 

 inches. Catawba River, North Carolina. (Cope.) 



(Cope, Proc. Amer. Phil. Soc. Phila. 1870, 458.) 



339. C. zaiieiillis Jordan & Brayton. 



Body long and slender, little compressed. Head rather long, narrow, 

 and pointed, very slender in young specimens, stouter in adults. Snout 

 decurved in profile, an angle in front of the nostrils Muzzle long, over- 

 hanging the large mouth. Lips much thickened, the lower with a con- 

 spicuous internal fringe of papillae. Barbels extremely long, longer 

 than in any other of our Cyprinidcc, their length more than half the 

 diameter of the eye. Eye moderate, nearly median, 3J in head. Scales 

 moderate, closely imbricated, 16 in front of dorsal. Lateral line slightly 

 decurved anteriorly. Fins rather small. Caudal deeply forked, its pe- 

 duncle long and slender. Coloration pale ; a small, round black spot at 

 base of caudal ; dorsal scales dark-edged ; a dark lateral streak, obso- 

 lete anteriorly; large specimens with a large dark patch on the last 

 rays of the dorsal, as in GUola analostana; base of the caudal with dark 

 points; males in spring with the head and neck profusely tuberculate 

 and the fins flushed with crimson. Head 4|; depth 4^. D. 8; A. 7; 

 scales 5-40-3 ; teeth 1, 4-4, 1. L. 3 inches. Saluda River, South Carolina. 



(Jordan & Brayton, Bull. U. S. Nat. Mus. xii, 25, 1878.) 

 343. C. monaclius Cope. 



Body slender, somewhat compressed, not much elevated. Head long 

 and rather slender, flattivsh above, with projecting muzzle. Mouth in- 

 ferior, horizontal, small, the maxillary not reaching the eye, which is 



