23G Bulletin 4'/, United States National Museum. 



371. LEUCISCUS ALICI.E (Jouy). 

 (Leathf.u-sided Minnow.) 

 Head 4J ; depth 3f ; eye 3i to 4. D. 8 ; A. 8 ; scales about 19-80-12 ; 

 teeth 2, 5-4, 2, typically without ji^rinding surface, but subject to an 

 unusual amount of irregularity, occasionally 2, 4-4, 1 or 2, and some- 

 times with grinding surface. Body comparatively elongate and com- 

 pressed, the caudal peduncle long and rather slender. Head short, rather 

 broad and flattish above, the interorbital space convex and broader than 

 the eye. Eye moderate, as long as snout. Mouth rather small, low, 

 terminal, oblique, the premaxillary just below level of pupil, the maxil- 

 lary reaching to just beyond front of eye. Dorsal fin inserted somewhat 

 behind ventrals. Pectorals short, not reaching nearly to ventrals, the 

 latter not to vent. Scales very small. Lateral line somewhat decurved. 

 Bluish olive above, with dark points ; sides silvery, a dusky lateral 

 shade; fins nearly plain ; axils red in the males; coloration in spirits very 

 pale, largely silvery. Length 6 inches. Great Basin of Utah; very 

 abundant in the Bear, Provo, Jordan, and Sevier rivers ; not known out- 

 side the limits of the old Lake Bonneville, except from Little Wood 

 River, Idaho, whereat has recently been found by Gilbert and Evermann, 

 who found that the fauna of the Upper Snake River in Idaho is practically 

 identical with that of Lake Bonneville. (Named for Mrs. Alice Jouy.) 



Tigoma gracilis, Giraed, Proc. Ac. Nat. Sci. Phila., 185G, 206, locality unknown, (Coll. Beck- 



with); the type lost ; the name gracilis preoccupied in Leiicisctis. 

 S^HaWiiscopct, .Jordan & Gilbert, Proc. U.S. Nat. Miis., 1880,401, Bear River, Evanston, 



■Wyoming ; Jordan & Gilbert, Synopsis, 238, 1S83 ; not Leiicisriis cupii, GI'ntheu. 

 Squalius aliciie, JoUY, Proc. U. S. Nat. Mus., 1881, 19, Provo River near Utah Lake. (Type, 



No. 27412. Coll. Jordan); Jordan & Gilbert, Synopsis, 238, 1883. 



Subgenus CHEONDA, Girard. 



372. LEUCISCUS COOPERI (Girard). 



Head i\ ; depth 4i- ; eye largo, 4^ in head. D. 8 ; A. 11 or 12 ; lateral 

 line 63. Body rather elongate, subfusiform, much compressed. Head 

 moderate, the snout thickish, subconical, slightly projecting. Mouth 

 oblique, the maxillary not quite reaching to eye. Fins large, the anal 

 notably so. Dorsal somewhat behind ventrals. Coloration reddish gray; 

 sides and belly silvery. Lower Columbia River. Known only from the 

 original type, above described. (Named for Dr. John G. Cooper, of Oak- 

 land, one of the pioneer naturalists of California.) 



Cheouda cooperi, Girard, Proc. Ac. Nat. Sci. Phila., 1856, 207, Fort Vancouver ; ami Pac. R. 



R. Surv., X, 294, 1858. (Type, No. 238. Coll. Dr. J. G. Cooper.) 

 Levcisciis cooperi, Gunther, Cat., vil, 243, 1868. 

 Squalius cooperi, Jordan & Gilbert, Synopsis, 242, 1883. 



373. LEUCISCUS HUMBOLDTI (Girard). 



Head 4; depth 3; eye large, 4. D. 8; A. 12; scales 12-56-8; teeth 2, 

 4-5,1. Body short and deep ; head moderate; mouth terminal, oblique, 

 the cleft rather short, the maxillary reaching front of eye. Lateral line 

 moderately decurved. Dorsal fin rather behind ventrals ; anal fin 

 elongate. Color bluish ; sides with two dusky lateral bands. Humboldt 



