31. CYPRINID.E SQUALIUS. 239 



lique, the premaxillary just below the level of the pupil, the maxillary 

 reaching to just below the level of the eye. Dorsal fin inserted some- 

 what behind veutrals. Pectorals short, not reaching nearly to ventrals, 

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

 decurved. Bluish olive above, with dark points ; a dusky lateral shade ; 

 tins nearly plain ; axils red in the males. Head 4| ; depth 3f . D. 8 ; 

 A. 8 ; scales about 19-80-12 ; teeth 2, 5-4, 2, typically without grinding 

 surface, but subject to an unusual amount of irregularity, occasionally 

 2, 4-4, 1 or 2, and sometimes with grinding surface. L. G inches. Kio 

 Grande and basin of Utah ; very abundant. Described from specimens 

 from Bear Elver, Wyoming. 



( Gila egregia Cope, Zool. Wheeler's Expi. W. lOOtli Men-, v, 662 (not Tigoma vgregia 

 Girard, as Girard's original specimens have Lat. 1. 65) ; Jor. & Gilb. Proc. U. S. Nat. 

 Mus. 1880, 461.) 



392. S. iiig-er (Cope) J. & G. 



Body robust, the back elevated anteriorly, the caudal peduncle short- 

 ish and not very stout. Occiput depressed. Head large. Eye rather 

 large, 5 in head. Mouth large, moderately oblique, the lower jaw in- 

 cluded, the maxillary extending to the pupil. Fins small, the dorsal 

 well backward. Scales small, posteriorly smaller and more crowded. 

 Lateral line little decurved. Color dusky, the scales with black dots. 

 Head 3|j depth 3f. D. S; A. 8; Lat, 1. 80; teeth 2, 4-5, 2, said by 

 Girard to have a developed grinding surface, which, however, we are 

 unable to find. Eio Gila. A well-marked species, approaching the 

 genus Gila. 



(Gila f/ibbosa B. & G. Proc. Acad. Nat. Sci. Phila. 1854, 28: Tigoma f/ibbosa Girard, 

 Proc. Acad. Nat. Sci. Phila. 1856, 207, and U. S. Mex. Bound. Surv. Ichth. 64 : f Gila 

 nigra Cope, Zool. Wheeler's Expl. W. 100th Mer. v, 633. The name gibbosa is, unfor- 

 tunately, preoccupied.) 



393. S. conspersus (Garni.) J. & G. 



Form of 8. niger. Profile of head concave, maxillary reaching front 

 of orbit. Pectorals extending three- fourths distance to ventrals, which 

 reach vent. Brown above; scales of back and sides speckled with 

 darker; an obscure dusky lateral shade. Head 3f ; depth 3f. D. 8; A. 

 8; "teeth 4, 1-1, 4, clawed"; scales 13-69-9. Nazas River. (Garman.) 



(Gila conspersa Garmaii, Bull. Mus. Comp. Zool. viii, 1881, 91.) 



ft Caudal peduncle very deep and compressed, its depth nearly equal to the depth 

 of the head ; dorsal over ventrals; scales rather large. (Siboma Girard.) 



394. S. gibbosus (Grd.) J. & G. Mullet; Chub. 



Body short, deep, compressed, the antedorsal region arched, the 

 'audal peduncle nearly as deep as long, about as deep as the head. 



