128 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY - IV. 



but rather spars.- papilla. Scales 12-74-10. Dorsal fin short, higher 

 than Inn.:,'. <>f about 11 rays. Color dark above; sides clouded with 

 Mark and yellow. Klamath Lake, Oregon. A little-known species. 

 (Ayrtt, Proo. A.-ad. N:ii. S. i. e'al. 1855, ::.'; .Ionian, 1. c. 173.) 



13G. I 1 . uiacrocJlBlMS Grd. Columbia River Sucker. 



Jlody heavy forwards. Head large and heavy, convex. Snout blunt, 

 much overlapping the horizontal mouth. Mouth quite large, with very 

 lar-v lips, tin- upper lull and pendent, with G-S rows of strong pa- 

 pilla*. Head large, 4 in length, rather narrow, quadrangular, the 

 snout pro/I ee ting. Kye large. Dorsal fin much longer than high, its 

 rays about 15. Pectorals long and narrow ; caudal well forked. Head 

 4 in length. Scales 12-72-10. Coloration rather dark ; a dusky lateral 

 Miipe; belo\v abruptly pile. Columbia River. 



(Mrard, Proc. Acad. Nat. Sci. Pliila. 1856, 175; Jordan, 1. c. 171.) 



137. C. occndonitaJas Ayrcs. Sacramento Sucker. 



P.ody rather slender, little elevated. Mouth comparatively small, 

 smaller than in C. commcrsoni ; the upper lip with 5 or G rows of smallish 

 papilhe; lips rather thin. Head quite small, rounded above, 4.4 in 

 length, the profile steeper than in C. commcrsoni. the snout more 

 pointed, the two sides of the head more convergent forwards. K\e 

 >::iall. Dorsal lin longer than high, its rays 12-14; caudal well forked, 

 the upper lobe the longer. Scales 13-75-10. Dark above, gradually 

 paler b;-low. Streams of California; abundant in the Sacramento and 

 San .loaqiiin. 



< Lyres, I'mr. Cal. Afad. X.-it. Hist. 1~',~>1, 18; Jordan, 1. C. 172.) 



C. bcf:3: 



Color blaelvish. Fins rather high. Lateral line with 80 scales (ac- 

 cording to the figure). I\ve large. Head 5 in length. ?.Ioulh small, 

 wilhbr.iad lips. Kio Iluagui, Mexico, west of the Sierra Mai Ire. (Girard.) 

 This species is, perhaps, allied to C. occi<l<'iit/tl!x, but may be nPantostcus. 

 lirard, I-PM-. A.-ni. N ; ,t. Sci. 1'hila. l-'.MJ, 175.) 

 I .-nil lini- \vi:li CiH-i;:, scales. 



Jor. A 



I'.oily rather clou-ate, little compressed, the back broad. Head 

 broad, conical. Mouth entirely inferior, the mandible horizontal; upper 

 lip very wide, full, pendent with alfiiit s rows of coarse, irregular papilla-; 

 lower lip vriy l.road, coarsely papillose, cut to the base by a sharp in- 

 cNon. Kye very small. 7 in head, ,'U in intcrorbital width. Dorsal fin 

 long and low, its anterior rays three-fourths the base of the fin, half 



