180 Jhilletin 77, United States Natioial M iiseuin. 



wide, full, pendant, with 4 to 8 rows of coarse, irregular papillae, lower 

 lip very broad, coarsely papillose, cut to the base by a sharp incision. 

 Eye small, 7 in head, 3^ in interorbital width ; snout 2J in head. Dorsal 

 fin long and low, its anterior rays \ longer than the last rays; pectorals 

 and ventrals short; caudal short; anal long. Pharyngeal bones rather 

 w^eak, with smallish teeth. Blackish above; males with the sides rosy; 

 fins dark. L. 18 inches. Close to C. commersonii, differing chiefly in the 

 rather larger mouth and lips. Lakes and streams of great basin of Utah, 

 swarming in myriads in Utah Lake. Also abundant iu upper waters of 

 Snake Kiver in Idaho. In Heart Lake, in the Yellowstone Park, it is 

 infested by a very large parasitic worm (Ligula cato-stomi, Linton), larger 

 than its own viscera, {ardcna, burning, from the red shades of the male.) 

 Catostomtis ardens, Jordan & Gilbert, Proc. U. S. Nat. Mus., 1880, 464, Utah Lake, Pro vo ; Jor- 

 dan &. Gilbert, Synopsis, 128; Jordan, Bull. U. S. Fish Com., 1889, 65, 77, etc; Linton, 

 Bull. U. S. Fish Com., 1889, 66. (Type, No. 27363.) 



291. CATOSTOMUS OILA, Kirech. 



Head 4^ ; depth 4*. D. 11 or 12. Scales 11-58 to 60-10. Close to C. 

 ardens, but the nape lower, the tail shorter. Dorsal shorter and higher, 

 its longest ray nearly twice the last, and longer than base of fin; free 

 margin incised. Snout 2^ iu head; eye small ; lips large, the ujjper with 

 4 rows of papilhe, the lower split nearly to base. L. 14 inches. Dark 

 brown, scales darker at base. Rio Gila. 

 Calostfimiis ijiht, Kirsch, Proc. U. S. Nat. Mus., 1888, 55.'5, Rio Gila, Fort Thomas, Arizona. 



2'J2. CATOSTOaiUS INSIGNIS, Bair.l & Girard. 



Body rather elongate, subterete, heavy at the shoulders, tapering back- 

 ward, the deptli about 5 in length. Head moderate, about 4Hii length. 

 Fontanelle rather small; mouth comparatively small; lips moderate, the 

 upper narrow, with several rows of large tubercles; no sheaths on jaws. 

 Scales subequal, about 56 iu the lateral liue, 19 iu a cross series, 27 before 

 dorsal; scales on back large, those on belly small. A series of dusky spots 

 along each row of scales; the spots often obscure. D. 11. Very close to 

 C. commemonn, the scales less crowded, the upper lip broader, the color 

 somewhat different. Gila basin ; not rare. (t«6i(/His, notable.) 



Calostonms inxignis, Bairb & Girard, Proc. Ac. Nat. Sci. Phila., 1854, 28, Rio San Pedro, 

 Arizona ; Cope & Yarrow, Wheeler Survey, Zool., v, 076, 1876; Jordan, I. c, 165,1878; 

 Jordan & Gilbert, Synopsis, 130,1883. (Type, No. 169.) 



293. CATOSTOMUS FECUNDUS, Cope & Yarrow. 

 (Webuo Sucker.) 



Head 4 ; depth 4^. D. 11 or 12 ; A. 7 ; V. 9. Scales 8-64-8. Body mod- 

 eratelj' stout, little compressed, the tail slender. Head subconic, the 

 profile decurved from the nape to the base of the premaxillary spines, 

 which abruptly protrude, forming a distinct "nose," as in Chamtustcn 

 liorus; premaxillaries in front scarcely below the preorbital. Mandible 

 large, oblique, placed at an angle of 30° when the mouth is closed, its 

 length 2| in head. Upper lip full, pendant, smoothish, with about 4 rows 



