30. CATOSTOMID.E CATOSTOMUS. 
127 
Alaska; very abundant northward. The most widely distributed 
species. 
{Ci/prinus catosiomu^ Forster, Phil. Traus. 1773, 155: Catostomus longirosirum auil 
hudsoiiius Le Sueur, Jouru. Acad. Xat. Sci. Phila. 1617, 102, 107 : Catostomus forsterianus 
Eichardsou, Fraukliu’s Jourual, 1623, 720 : Catostomus aurora Agassiz, Lake Suiierior, 
3G0 : Catostomus hudsonius Giiuther, vii, 13 : Catostomus griseus Giiuther, vii, 14 ; Jordan, 
1. c. 175.) 
133. C. talaoesssas Gill & Jordan. — Tahoe Sucl'er. 
Ilather stouter, the depth 4^5 in length. Head very large and loug- 
acnmiiiate, the muzzle nearly one-half its length, overhanging the rather 
large month. Lijis moderate, the upper pendent, with about 3 rows of 
small papillte ; the lower rather full, similarly papillose. Eye nearly 
median, rather small. Si in head. Scales small and crowded forwards, 
closelj’ imbricated, 85-00 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; tins dusky; scales every- 
Avhere linely punctate. Breeding males profusely tuberculate. Size 
large. Lake Tahoe ; very abundant. 
(Jordan, 1. c. 173 ; Jordan A Heushaw, Eej)t. Chief Engin. app. nn, 1676, 166.) 
** Scales small, crowded, and smaller anteriorly than posteriorly, 56-75 in the course 
of the lateral line. (Decactyhis Ealinesque.*) 
c. Upper lip thick and full, with several (5-6) rows of jiapilloe. 
d. Foutauelle very small and narrow ; both jaws with a weak cartilaginous 
sheath. 
134. C. arseopHS Jordan. 
Body elongate, fusiform, subterete, the greatest depth 4:^-4.i in 
length. Head small, conical, 4| in length. Mouth quite large, with 
full, thick lips, the upper very wide and pendent, with about 0 rows of 
very strong papilhe ; lower lip two-lobed, similarly itapillose. Inter- 
orbital space wide, convex. Eye elevated, posterior, quite small. Eins 
moderate ; dorsal higher than long, with 10, rarely 11, rays; ventral 
rays 10. Scales small, crowded forwards, 10 or 0-70-8. Color dark ; 
scales with dark imnctulatious. Xevada and Southern California. 
(Jordan, 1. c. 173; Jordan & Heushaw, Eept. Chief Engin. app. »h, 1676, 166.) 
dd. Foutauelle well developed ; lips without evident cartilaginous sheath. 
e. Lateral line with 70-60 scales. 
135. U. lalhiatsss Ayres. 
Head 4J^ in length, rather bluntish. Mouth moderate, the labial pa- 
pillic largely developed ; the upper lip full, with about 5 rows of large 
* Eatinesque, Ichth. Oh. 1620, GO : type Catostomus iostoniensis Le Sueur. (j£«a, ten; 
daKTvXoc, toes •, i. e., 10 ventral rays.) 
