Jordan and Ever maim. Fis/ies of North America. 183 



aa. Scales email, 70 to 80 in the lateral line. 



c. Snout short, the premaxillary spines not forming a distinct projecting nose; dorsal ray 



11; Scales 12-74-11. BRKVIROSTBIS, 208. 



cc. Snout long, the premaxillary spines forming a distinct projecting nose, as in C. liantt. 



Scales 12-80-9. LUXATVS, Stt. 



296. CHASMISTES LIORUS, Jordan. 

 (JUNE SUCKER OF UTAH LAKE.) 



Head large, 3f in length ; depth about 5. Scales 9-63-8. Interorbital 

 space broad, 2J- in head ; eye 6 to 7 in head ; width of the open mouth 

 3i in head. D. 11, the fin elevated in front, its longest ray twice the 

 height of the last and about equal to the base of the fin. A. 7. Caudal 

 deeply forked, the lower lobe long; lower fins small. Color dusky 

 above, pale below ; the scales of the back and sides profusely covered 

 with dark punctulations. L. 18 inches. Utah Lake; very abundant. 

 (fatocj smooth; flpof, margin, referring to the lips.) 



ChasmMes Iwrus, JORDAN, Bull. U. S. Nat. Mus., xn, 219, 1878; Utah Lake at Provo, Utah; 

 JORDAN & GILBERT, Synopsis, 132,1883. (Type, No. 273C1.) 



297. CHASMISTES CUJUS, Cope. 



(COUIA.) 



Head broad and flat ; upper lip very thin ; lower lip represented by folds 

 on each side, which do not connect around the symphysis; eye 8^ in head ; 

 interorbital space 4|. D. 12 ; A. 8. Scales 13-65-11. Color pale olive. 

 Pyramid Lake, Nevada, in deep water. (Cope.) (couia, the Indian name.) 



Cha&misles citjus, COPE,* Proc. Ac. Nat. Sci. Phila., 1883, 149, Pyramid Lake, Nevada. 



298. CHASMISTES BREVIROSTRIS, Cope. 



Scales 12-74-11. D. 11 ; A. 9. Shorter than C. luxatus, especially the 

 muzzle, and the latter is without the hump produced by the protuberant 

 premaxillary spines. Parietal fontanelle small. Lower lip fold present 

 only 011 the sides of the mandible. Body nearly cylindric. Color dusky 

 above, silvery below; fins colorless. (Cope.) L. 16 inches. Klamath 

 Lake, Oregon, (brevis, short ; rostrum, snout.) 



Cltasm isles brevirostris, COPE, American Naturalist, 1879, 785, Klamath Lake, Oregon ; JORDAN 

 & GILBERT, Synopsis, 132, 1883. 



299. CHASMISTES LUXATUS, Cope. 



Scales 12-80-9. D. 11 ; A. 9. Form elongate. Head long, flat above 

 with a large fontanelle. Mouth terminal, the spin'es of the premaxillary 

 projecting so as to form a hump on the top of the snout. Lower lip a 

 very thin dermal fold, extending entirely around the chin. Color clouded 

 above, with black punctulations, below paler, with red shades in some 

 specimens ; fins uncolored. (Cope.) L. 3 feet. Klamath Lake and River, 

 Oregon, (luxatus, put out of joint, referring to the nose.) 

 Chaxmistes luxatus, COPE, American Naturalist, 1879, 784, Klamath Lake, Oregon ; JORDAN & 

 GILBERT, Synopsis, 132, 1883. 



*This paper "On the Fishes of the Recent and Pliocene Lakes of the Western Part of the 

 Great Basin and of the Idaho Pliocene Lake" contains an important discussion of the fish fauna 

 of Nevada, Oregon, and Idaho, with description of numerous fossil forms not long extinct and 

 closely allied to recent Cyprinidte and Catostomidse. 



