132 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY— IV. 
a. Pharyngeal bones of moderate strength ; the upper teeth minute, the lower en- 
larged. {Chasmistes.) 
146. C. Oaoraas Jordan. — June Sucker of Utah Lake. 
Depth about 5 in length ; head 3|. Interorbital space broad, 2^ in 
head. Eye G-7 in head. Width of the open month 3} in head. D. I, 
11, the fin elevated in front, its anterior ray twice the height of the pos- 
terior and about equal to the base of the fin ; A. I, 7 ; caudal deeply 
forked, the lower lobe long ; lower fins small. Scales 9-G3-8. Color 
dusky above, pale below ; the scales of the back and sides profusely cov- 
ered with dark i)unctulations. L. 18 inches. Utah Lake; abundant. 
(Jordan, Bull. U. S. Nat. Mus. xii,219, 1878.) 
aa. “Pharyngeal l>ones very thin and Hat, with vei'y numerous minute teeth, as in 
Carjnodes.” {Lipomyzon Cope.*) 
147. C. C>rcvfli*ostras Cope. 
“ Shorter tha7i C. luxatus, especially the muzzle, and the latter is with- 
out the hump produced by the iirotuberant premaxillary spines. Parie- 
tal fontanelle small. The lower lip fold is only present on the sides of 
the mandible. Body nearly cylindric. Scales 12-71-11. Eadii : D. 11 ; 
A. 9. Color dusky above, silv^ery below; fins colorless.” [Cope.) L. IG 
inches. Klamath Lake, Oregon. 
(Cope, American Naturalist, 1879,785.) 
14§. C. Isixiitaas Cope. 
Form elongate. Head long, flat above, and with a large fontanelle. 
Mouth terminal, the spines of the premaxillary projecting so as to form 
a hump on the top of the snout. Lower lip a very thin dermal fold, ex- 
tending entirely around the chin. Scales 12-80-9. Eadii : D. 11 ; A. 9. 
Color clouded above, with black punctulations, below paler, with red 
shades in some specimens ; fins uncolored.” [Cope.) L. 3 feet. lOa- 
math Lake and Eiver. 
(Cope, American Naturalist, 1879,784.) 
66. — ERDMYEOrV Jordan. 
Chub Snehers. 
(Moxoatoma Ag. ; not of Raf.) 
(Jordan, Bull. Buffalo Soc. Nat. Hist. 187G, 95 : type Cyprinus ohiongus Dlitch. = 
Cyprinus sneetta Lac.) 
Body oblong, rather shortened, heavy forwards, and considerably 
compressed. Head moderate, rather broad above. Mouth moderate, 
*Cope, Amer. Nat. .Ian. 1881, 59: type Chasmistes hrerirostris Cope. {AeiTTcj, to be 
deficient; iivZoo, to suck.) 
