31. CYPEINID^ — SQUALIUS. 
241 
396. S. squamatiis (Gill) J. & G. 
Body very robust, subovate, compressed. Head large and long, 
couical. Mouth rather large, oblique, terminal, the maxillary reaching 
front of orbit, the upper lip on the level of the lower part of the eye. 
Eye moderate, anterior, 5§ in head. Dorsal fin small, inserted poste- 
riorly, but directly over the veutrals. Scales moderate, snborbiculai;, 
widely exijosed. Color dark or blackish ; the scales all margined with 
black ; tins dusky. Head 3^ ; depth 3. D. 8 ; A. 8 ; scales 10-53-6 ; 
teeth 2, 5-4, 2. L. 8 inches. Salt Lake Basin. 
{Tifjoma squamata Gill, Proc. Dost. Soc. Nat. Hist. 1861, and Ichtb. C'aid. Simpsou’s 
Expl. 1876, 405.) 
397. S. atrarius (Grd.) Jor. & Gi\h.~-Utah Mullet; Chub of Utah Luke. 
Body rather stout, the caudal peduncle not slender. Head moderate, 
subconical. Mouth anterior, quite small, the maxillary not reaching to 
the eye. Eye small, 5i in head. Fins quite small. Dorsal tin nearly 
or quite over the veutrals. Scales large, not much imbricated, 25 be- 
fore dorsal. Lateral line decurved. Olivaceous, blackish above, the 
color formed of small black points. Head 4; depth 3|-. D. 9; A. 8; 
scales 11-57-6; teeth 2, 5-4, 2, usually with evident grinding surface, 
although placed by Girard and Cope in Siboma, which wants such sur- 
face. L. 20 inches. Utah Basin. Very common in Utah Lake. A large 
species, used as food, and very destructive to young trout. 
{Siboma atraria Grd. Proc. Acad. Nat. Sci. Pbila. 1856, 208, aud U. S. Pac. It. R. 
Surv. X, 297: Siboma atraria aud var. lonfficeps Cope, Zool. Wheeler’s Expl. W. lOOtb 
Mer. V, 667.) 
398. S. crasSHS (Grd.) Jor. &■ Gilb. t 
Body robust. Head rather small, the snout short and depressed. 
Mouth moderate, oblique, the maxillary not reaching to the eye. Eye 
small, 6 in head. Dorsal fin inserted slightly behind veutrals. Scales 
moderate, broadly exposed. Dusky above, sides and below paler. Head 
4; depth 3^. D. 8; A. 8; scales 10-57-7; teeth 2, .1-4, 2, with narrow' 
grinding surface. L. 10 inches. Sacramento Biver, California. 
{Tigoma crassa Grd. Proc. Acad. Nat. Sci. Pbila. 1856, 207, aud U. S. Pac. R. R. Surv. 
X, 293.) 
cc. Slender species, the depth 4-41 ii‘ length: lateral line 60-70. {Cheonda* Grd.) 
399. 8 . cobi’mIcms (Grd.) Jor. & Gill). 
Body slender, subfusiform. Head slender, the snout long, conical, 
* Cheonda Girard, Proc. Acad. Nat. Sci. Pbila. 1856, 207: type Cheonda coopcri Grd. 
CA coined name.) 
Bull. Bat. Mus. Bo. Hi 16 
