Jordan and Evermann. Fishes of North America. 177 



Calostomm nanomyzon,* MATHER, Twelfth Rept. N. Y. Fish Com., Survey Adirondack Region, 

 1884, 36, Big Moose Lake, northern New York. (Type, No. 33917.) 



283. CATOSTOMUS TAHOENSIS, Gill & Jordan. 



(TAHOE SUCKER.) 



Rather stouter than C. catostomus, the depth 4 to "5 in length. Head 

 very large and long acuminate, the muzzle nearly its length, overhang- 

 ing the rather large mouth. Lips moderate, the upper pendant, with 

 about 3 rows of small papillae; the lower rather full, similarly papillose. 

 Eye nearly median, rather email, 8i in head. Scales small and crowded 

 forward, closely imbricated, 85 to 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 

 everywhere finely punctate. Breeding males profusely tuberculate. Size 

 large. Lake Tahoe, very abundant. We have specimens also from Hum- 

 boldt River, at Winnemucca, Nevada. 



Catostomm tahoensis, JORDAN, I. c.,173, 1878, Lake Tahoe, California (Type, No. 31226) ; JORDAN 

 & HENSHAW, Rept. Chief Engin., app. nn, 1878, 188 ; JORDAN & GILBERT, Synopsis, 127, 1883. 



284. CATOSTOMUS BEX, R. S. Eigenmann. 



Head 4; depth 4. D. 11; A. 6. Scales 13-80-8, 35 before dorsal. 

 Head broad, flattish, the cheeks very long. Mouth small; lower jaw 

 strong, the premaxillaries forming a hump on the snout ; 2 rows of 

 papillae on upper lip ; eye 8 in head, little behind the middle ; snout 2i 

 in head. Scales peculiar, covered with skin at base. Ventrals not reach- 

 ing halfway to vent. Dorsal as high as long, its last rays almost as 

 long as the first ; pectorals reaching halfway to ventrals. Caudal peduncle 

 long, terete. Lateral line interrupted behind. Teeth moderate. Black- 

 ish above, paler below ; scales of belly dark-dotted ; fins dark. Length of 

 type 32 inches. Lost River, Tule Lake, Oregon. (Eigenmann.) (rex, 

 king.) 



Catostomm rex t ROSA SMITH EiOENMANN, American Naturalist, July, 1891, 6G7, Lost River, 

 Oregon. 



Subg'enus DECACTYLUS, Rafineeque. 

 285. CATOSTOMUS LABIATUS, Ayres. 



Head 4| in length, rather bluiitish ; mouth moderate, the labial papillss 

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

 rather sparse papillse. Scales 12-74-10. Dorsal fin short, higher than 

 long, of about 11 rays. Color dark above ; sides clouded with black and 

 yellow. Klamath Lake, Oregon; only one specimen yet known, (la- 

 biatus, large-lipped.) 



Catostomus labiates, AYRES, Proc. Cal. Ac. Sci., 1855, 32, Klamath Lake, Oregon ; JORDAN, I.e., 

 173 ; JORDAN & GILBERT, Synopsis, 128,1883. 



* Thus described by Mr. Mather: " Brown; male with a red lateral band in the breeding season; 

 head slender, flattened above, the snout shorter than in C. catoslomns; lips thick, the Iowa with 

 3 or 4 rows of tubercles ; eye large, 4 in head, 1% in snout. Scales smaller anteriorly, but htt e 

 crowded; dorsal higher than long; pectorals reaching front of dorsal; head 4; depths. D. I 10 

 A. 7. V. 9. Scales 14-99-11 ; L. (spawning specimens) 4J4 inches. Big Moose Lake, Adirondack 

 region. Apparently ti dwarfed brook variety of C. catostomus, but inhabiting the same regioi 

 and spawning at a much smaller size." 



F. N. A. 13 



