30. CATOSTOMIDJ3 CATOSTOMUS. 
129 
longer than the last rays ; pectorals and ventrals short ; caudal short ; 
anal long. Pharyngeal bones rather weak, with smallish teeth. Black- 
ish above ; males with the sides rosy ; fins dark. Head 3| ; depth 4.^. 
I). 13; A. 7 ; scales 9-G5-0. L. 18 inches. Utah Lake. 
(Jordan & Gilbert, Proc. U. S. Nat. Mas. iii, 464, 1830.) 
140. C. fecBlBBdiBS Cope & Yarrow. — Utah Lake Sucker. 
Body moderatelj" stout, little compressed, the tail slender. Head sub- 
conic, the profile regularly decurved from the nape to the base of the 
premaxillary spines, which abruiitly protrude, forming a distinct “nose’’ 
as in Gliasmistcs liar us ; iiremaxillaries in front scarcely below the pre- 
orbital. Mandible large, oblique, placed at an angle of 30° when the 
mouth is closed, its length 3 in head. Upper lip full, iiendent, with 
about 4 rows of coarse papillte ; lower lii) moderate, divided by a broad 
notch, each lobe with about C rows of papillm. Eye a little behind 
middle of head. First ray of dorsal twice height of the last, its length 
greater than that of the base of the fin; caudal forked, the lower lobe 
longest; pectorals long ; anal high. Du.sky above, pale below. Head 
4 ; depth 4i. D. 11 ; A. 7 ; V. 9 ; scales 8-G0-8. L. 13 inches. Utah 
Lake; excessively abundant. This species has evident affinities with 
CJiasmistes. 
(Cope, & Yarrow, Zool. Wheeler’s Expl. W. lOOthMer. v, 678, 1876; Jordan & Gil- 
bert, Proc*. U. S. Nat. Mas. 1880, 463. ) 
cc. Upper lip comparatively thin, with but few (2 or 3) rows of papilhe. 
/. Scales much reduced, and crowded anteriorly ; dorsal rays 11-15. 
141. C. cypBflo Locldngton. 
A conspicuous hump behind the occiput, supported by a greatly ex- 
panded, broadly triangular interneural bone. Upper Iq) with about 3 
rows of papillte, lower lip with .about 8 ; the lower lip divided to the 
base by a broad emargiuation. U. 15 ; A. 8 ; V. 10 ; Lat. 1. 72. Colo- 
rado Biver at mouth of Gila. {Lockhigton.) 
(Lockington, Proc. Acad. Nat. Sci. Phila. 1880. ) 
142. -C. cOBHBiBcrsoBti (Lacdpede) Jordan. — Common Sucker ; White Sucker ; Brook 
Sucker; Fiue-eculeil Sucker. 
Body moderately stout, varying with age, sub terete, heavy at the 
shoulders, the depth 4-4i| in length. Head rather large and stout, 
conical, flatfish above, its length 4-4i in body (3.}-4^ in young). 
Snout moderatel 3 " prominent, scarcely overpassing the mouth. Mouth 
rather large ; the lips strongly' papillose, the upper moderate, with 2 or 3 
rows of p.apillai. Scales crowded .anteriorly, much larger on the sides 
than below; scales 10-G4 to 70-9. Coloration olivaceous; males in 
Bull. Kat. Mus. No. IG 9 
