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. 2^- 
iuches. Upper Missouri region. 
(Jordan, Bull. Hayden’s Geol. Surv. Terr, iv, 791, 1878.) 
** Teeth two-rowed. 
t Teeth without grinding surface. 
C. coEsatis (Grd.) J. & G. 
Body moderately elongate, subfusiform, compressed. Head small, 
subconical, depressed. Mouth small, terminal, oblique, Avithout barbels, 
the maxillary falling far short of eye ; lower jaw included. Eye mod- 
erate, high up, midway in head ; isthmus very wide. Ventrals slightly 
in advance of dorsal. Fins all high. Lateral line nearly straight. Body 
olivaceous, with dusky specks above 5 a black spot at base of caudal. 
Head 4; deyth 4^. D. 8 ; A. 7 ; Lat. 1. C5. Teeth without grinding 
surface, 1, 3-3, 1, Girard.* L. 2i inches. Eio Gila. {Girard.) 
{Tiarorja cofthis Girard, Proc. Acad. Nat. Sci. Phila. 1856, 204, and U. S. Mex. Bound. 
Surv. Ichth. 60 : Lenciscus cobilis Giiuther, vii, 247.) 
21§. C. Sima (Cope) ,Ior. & Gill). 
Body robust. Head short and broad, with short, decurved muzzle. 
Mouth large, oblique, the upper lip below the level of the pupil, the 
maxillary extending jtast the front of orbit. Eye moderate, 4i in head. 
Fins large, the dorsal well behind ventrals. Coloration entirely silvery, 
brightest on the sides. Head 44; 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. Eio Grande at San Ildefouso, Hew Mexico. {Cope.) 
{Allhirnellus simus Coiie, Zool. Lieut. Wheeler’s Expl. W. 100th Mer. v, 649, 1876.) 
B Teeth with grinding surface more or less developed. (Hudsonius Girard. t) 
219. C. saSadaBna Jor. & Brayt. 
Body elongate, but less so than in C. storeriana, moderately com- 
pressed. Caudal iieduncle long. Head large, rather heavj'^ and gib- 
bous forward, the muzzle rounded in iirofile. 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: type Cliipea liudsonia De Witt 
Clinton. (The name from Hudson River.) 
