FISHES OF THE MISSOURI PJVER BASIN. 389 



21. Ictiobus urus (Agassiz). Mongrel Buffalo. Missouri River, St. Joseph (Jor- 



dan & Meek, 1885); Kansas River and branches of the Missouri (Graham, 

 1885); Silver Lake ami Soldier Creek (Cragin, 1885a). 



22. Ictiobus bubalus (Raiinesque). Small-mouth Buffalo. Missouri River, St. 



Joseph, Mo. (Jordan & Meek, 1885) ; plentiful over Kansas (Graham, 1885) ; 

 Kansas River (Cragin. L885a) ; Marais River, Dixon, Mo. (Meek, 1891); Floyd 

 River, Sioux City, Iowa, and East Okohoji Lake, Iowa (Meek, 1894). Found 

 by us only in Crow Creek near Chamberlain, S. Dak. The two small speci- 

 mens in the collection give the following measurements: Head!; depth 2£ 

 and 3; eye 4; snoutl; scales 7-:!7-5 and 7-::x-5. D. 23 and 26; A. 8. Tho 

 number of dorsal rays is lower than the usual number for this species, and 

 the axis of the body is scarcely below the lateral line. These are the only 

 dark-colored specimens of buffalo-fish that we secured, and they are paler 

 than more eastern examples. 



Either this or the following species is said to be very abundant in Okohoji 

 Lake and the other lakes of northwestern Iowa and southern Minnesota. 

 We were unable to secure specimens, and can not be sure which species it is. 

 Some species of bnffalo-fish, probably this one, is said to be excessively 

 abundant in most of the small lakes of South Dakota, where it is of much 

 importance as an article of food. 



23. Carpiodes carpio (Raiinesque). Carp Sucker. Osage River, Mo. (as Carpiodes 



bison type, Agassiz, 1855); Manhattan, Kans., and Ward Creek, Shawnee 

 County, Kans. (Gilbert, 1881) ; Silver Lake, Ward Creek, and Fort Riley 

 (Cragin, 1885a) ; Belle Fourche River, Belle Fourche, S. Dak. (Evermann, 

 1893); Niobrara River north of Long Pine; Mud Creek at Ravenna; Wood 

 Creek at Grand Island; Middle Loup River at Dunning and Emanuel Creek 

 near Springfield. Only young specimens were obtained. These seemed to 

 differ from typical carpio in being more slender and in having fewer rays iu 

 dorsal fin. The depth is 3 to 3f and the dorsal 25. 



24. Carpiodes velifer (Rafinesque). Quillback. Milk River (as Carpiodes damalis 



type, Girard, 1856); Fort Pierre (Girard, 1858); Milk River (as Carpiodes 

 damalis, Suckley, 1860); Kansas River near Fort Riley (as Carpiodes damalis, 

 Cope, 1865); "Probably from one of the Western States" (as Carpiodes 

 grayi type, Cope, 1870); Hundred and Two River, Bedford, Iowa, and 

 Maryville, Mo. ; Blackwater Creek, Brownsville, Saline County, and Flat 

 Creek, near Sedalia, Mo. ; Osage River, Clinton, Mo. ; Grand River, Clinton, 

 Mo.; Tabo Creek, Calhoun, Mo. (as Ictiobus velifer, Jordan & Meek, 1885); 

 Kansas River (as Ictiobus velifer and Ictiobus velifer bison, Graham, 1885) ; 

 Ottawa and Eureka Lake (Cragin, 1885a); Republican River, Concordia, 

 Kans.; Solomon River. Beloit, Kans.; Saline River, Wakeeney, Kans. (Hay, 

 1887); Missouri River, Iowa; Big Sioux River, Sioux City, Iowa (Meek, 

 1892); Poplar River, Poplar, Mont. (Eigenmann, 1894); Blue River, Crete, 

 Nebr. ; Platte and Elkhorn rivers, Fremont, Nebr., and Floyd River, Sioux 

 City, Iowa (Meek, 1894). Found by us in the South Loup at Ravenna, which 

 is the most western point from which this species has been reported. 



25. Cycleptus elongatus (Le Sueur). Gourd-sen! Sucker; Missouri Sucker; Black 



Sucker. Kansas River (Graham, 1885; Cragin, 1885a). This interesting 

 sucker does not seem to have been taken often in the Missouri Basin, and 

 how it came by the name " Missouri sucker " is not apparent. 



26. Pantosteus jordani Evermann. 



Pantosteus virescens Jordan, Bull. 4, vol. i\\, U. S. Geol. and Geogr. Survey 

 of Territories, 780, 1878, Sweet Grass Hills, Montana (specimens collected by 

 Dr. Elliott Cones). 



Catostomus discobolus Evermann, Bull. U. S. Fish Comm., xi, 1892, pi. xviii, 

 fig. 1, 41, Red Rock and Beaverhead rivers, Mont. 



