170 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY — IV. 



sometimes a small dark spot at base of caudal. Head 4| ; depth 5. D. 



7 ; A. 7 ; scales 4-35-3 ; teeth 4-4, without grinding surface. L. 2f 



inches. Upjier Missouri region. 



(Jordan, Bull. Hayclen's Geol. Surv. Terr, iv, 791, 1878.) 



** Teeth two-rowed. 



t Teeth Avithout grinding surface. 



21^. C. c&MUs CGrd.) J. & G. 



Body moderately elongate, subfusiform, compressed. Head small, 

 subconical, depressed. Mouth small, terminal, oblique, ^Yithout barbels, 

 the maxillary falling far short of eye; lower jaw included. Eye mod- 

 erate, high up, midway in head ; isthmus very wide. Yentrals slightly 

 in advance of dorsal. Fins all high. Lateral line nearly straight. Body 

 olivaceous, with dusky specks above ; a black spot at base of caudal. 

 Head 4; depth 4i. D. 8; A. 7; Lat. 1. 05. Teeth without grinding 

 surface, 1, 3-3, 1, JifZe Girard.* L. 2^- inches. Eio Gila. {Glrard.) 



(Tiarof/a cohitis Girard, Proc. Acad. Nat. Sci. Phila. 185G, 204, and U. S. Mex. Bound. 

 Surv. Ichth. 60: Leuciscus cohitis Gunther, vii, 247.) 



21§. C. sima (Cope) Jor. & Gilb. 



Body robust. Head short aud broad, with short, decurved muzzle. 

 Mouth large, oblique, the upper lip below the level of the pupil, the 

 maxillary extending past the front of orbit. Eye moderate, 4i in head. 

 Fins large, the dorsal well behind ventrals. Coloration entirely silvery, 

 brightest on the sides. Head 4|; depth 4i. D. 8; A. 9; scales 

 8-35-4, 22 series in front of the dorsal fin ; teeth 1, 4-4, 1. L. 3^ 

 inches. Rio Grande at San Ildefonso, New Mexico. {Co^e.) 



(AlbunieUiis simas Cope, Zool. Lieut. Wheeler's Expl. W. 100th Mer. v, 649, 1876.) 



It Teeth with grinding surface more or less developed. (Hudsonius Girard.t) 



219. C saaoi^aBaa Jor. & Brayt. 



Body elongate, but less so than in C. storeriana, moderately com- 

 pressed. Caudal peduncle long. Head large, rather heavy and gib- 

 bous forward, the muzzle rounded in profile. Eye large, 3^ in head. 

 Mouth moderate, subinferior, the maxillary not reaching to the eye. 

 Scales large, thin and loose, about 12 in front of the dorsal fin. Lateral 

 line somewhat decurved in front. Fins rather small, pectorals not reach- 

 ing to ventrals, the latter not to vent. Coloration pale olivaceous, nearly 



* If this number of teeth is normal and not merely due to accident, this species of 

 course does not belong to Cliola, 



t Girard, Proc. Acad. Nat. Sci, Phila, 1856, 210: typo Clupea hudsonia De Witt 

 Clinton. (The name from Hudson River.) 



