30. CATOSTOMIDJ5 CATOSTOMUS. 127 



Alaska; very abundant northward. The most widely distributed 

 species. 



(Cyprinus vatostomus Forster, Pliil. Trans. 1773, 155: Catostomus longirostrum and 

 hudsonius Lo Sueur, Journ. Acacl. Nat. Sci. Phila. 1817, 102, 107 : Catostomus forsterianus 

 Eichardson, Franklin's Journal, 1823, 720 : Catostomus aurora Agassiz, Lake Superior, 

 360 : Catostomus hadsonius Giiuther, vii, 13 : Catostomus griseus Giinther, vii, 14 ; Jordan, 

 I.e. 175.) 



133. C. taBaoesasis Gill & Jordan. Talioe Sucker. 



Eather stouter, the depth 4 J-5 in length. Head very large and long- 

 acuminate, the muzzle nearly one-half its length, overhanging the rather 

 large mouth. Lips moderate, the upper pendent, with about 3 rows of 

 small papillae ; the lower rather full, similarly papillose. Eye nearly 

 median, rather small, SJ in head. Scales small and crowded forwards, 

 closely imbricated, 85-90 in the course of the lateral line, and about 

 28 in a cross-series from dorsal to ventrals. Dorsal short, but longer 

 than high, its rays 10. Coloration very dark; fins dusky; scales every- 

 where finely punctate. Breeding males profusely tuberculate. Size 

 large. Lake Tahoe ; very abundant. 



(Jordan, 1. c. 173 ; Jordan & Heushaw, Ecpt. Chief Engiu. app. nn, 1878, 188.) 



** Scales small, crowded, and smaller anteriorly than posteriorly, 58-75 in the course 



of the lateral line. (Decactylus Eafiuesqne.*) 

 c. Upper lip thick and full, with several (5-8) rows of papillae. 



d. Foutanelle very small and narrow ; both jaws with a weak cartilaginous 

 sheath. 



134. C. aB*SEEMS Jordan. 



Body elongate, fusiform, subterete, the greatest depth 4^-4^ in 

 length. Head small, conical, 4 in length. Mouth quite large, with 

 full, thick lips, the upper very wide and pendent, with about C rows of 

 very strong papillae; lower lip two-lobed, similatly papillose. Inter- 

 orbital space wide, convex. Eye elevated, posterior, quite small. Fins 

 moderate; dorsal higher than long, with 10, rarely 11, rays; ventral 

 rays 10. Scales small, crowded forwards, 10 or 9-70-8. Color dark ; 

 scales with dark punctulations. Nevada and Southern California. 



(Jordan, 1. c. 173 ; Jordan & Henshaw, Kept. Chief Eugin. app. nn, 1878, 188.) 



diL Foutauelle well developed ; lips 'without evident cartilaginous sheath. 

 e. Lateral line with 70-80 scales. 



135. C. HaMatGis Ayres. 



Head 4 in length, rather bluntish. Mouth moderate, the labial pa- 

 pill;^ largely developed ; the upper lip full, with about 5 rows of large 



* Eah'uesque, Ichth. Oh. 1820, 60 : type Catostomus bostoniensis Le Sueur. (Je/ca, ten; 

 c, toes; i. e., 10 ventral rays.) 



