31. CYPRINIDJS SQUALIUS. 239 



lique, the premaxillary just below the level of tlic impil, the maxillary 

 reaehing to jast below the level of the eye. Dorsal liu iuserted some- 

 what behind veiitrals. Pectorals short, not reachinj? nearly to ventrals, 

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

 decurved. Bluish olive above, with dark i)oints ; a dusky lateral shade -, 

 lins 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 grindin;;;- 

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

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

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

 from Bear Eiver, Wyoming. 



(Gila egregia Cope, Zool. Wheeler's Expl. AV. lOOth Mer. v, (502 (uot Tigoina egrcgia 

 Girard, as Girard's original specimens have Lut. 1. Co) ; Jor. & Gilb. Proc;. U. 8. Nat. 

 Mus. 1880, 401.) 



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^; depth 3|. D. 85 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. Rio Gila. A well-marked si)ecies, approaching the 

 genus Gila. 



{Gila gibbosa B. Sc (J. Proc. Acad. Nat. Sci. Phila. 1854, '28: Tigoma gibhomi Girard, 

 Proc Acad. Nat. Sci. Phila. 1850, 207, and U. S. Mex. Bound.. Siirv. Ichth. 04: ? Gila 

 nigra Copi>., Zool. Wheeler's Expl. W. 100th Mer. v, 633. The name gibbosa is, vmfor- 

 tunately, preoccupied.) 



393. S. «-on$pcrsus (Garm.) J. & G.- 



Form of S. 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 3^. D. 8; A. 

 8; "teeth 4, 1-1, 4, clawed"; scales 13-69-9. Nazas River. {Gar man.) 



{Gila conspersa Garman, Bull. Mus. Comp. Zoiil. viii, 1881, 9L) 



ft Caudal peduncle very deej) and (•i)mj)rosscd, its (lc])th nearly equal to the depth 

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



394. S. Kibbosus (Grd.) J. &. G.— Mullet; Chnh. 



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

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



