OKLAHOMA: _Alfalfa_: OU 9316, 2 mi. S Cherokee. _Cleveland_: OU 22973, Norman. _Delaware_: UMMZ 81476, Spavinaw. _LeFlore_: OU 16802, 1.5 mi. E Zoe. _Osage_: UMMZ 89628, Big Hominy Creek. _Pottawatomie_: OU 25175, 5 mi. SW Shawnee. _Rogers_: OU 7317, Verdigris River, 5 mi. W Claremore; UMMZ 81473-74, near Garnett, Tulsa County; UMMZ 81475, 4 mi. NE Inola. _Sequoyah_: OU 9008, 2 mi. NE Gore; TU 13885, Little Vian Creek, 1 mi. E Vian. _Texas_: OU 5005, 5 mi. SE Guymon. _Tulsa_: TU 17061, Bird Creek "near" Skiatook, Osage County. _Woods_: CHNM 11809, Waynoka; OU 9432, 2.5 mi. W Waynoka; OU 9579, 9581-82, 1 mi. S Waynoka. TEXAS: _Hansford_: TTC 719, 10 mi. S, 2 mi. W Gruver. _Hutchinson_: TTC 1090, Carson Creek, Turkey Track Ranch. WYOMING: _Goshen_: USNM 7648, Fort Laramie. _Weston_: UMMZ 78080, Beaver Creek. NO DATA: CNHM 21687-88, 22925. SM 142 (locality of Waco, McLennan County, Texas, believed in error). USNM 7649, 11625, 19622-23, 36412 (Illinois River). _Records in the literature._--ARKANSAS: _Benton_: (Dowling, 1957:37). _Chicot_: Lake Chicot. _Clark_: Terre Noir Creek, 13 mi. W Arkadelphia. _Garland_: Ouachita River, Mountain Pine (Conant and Goin, 1948:7). _Hempstead_: _Jefferson_: (Dowling, _loc. cit._). _Lawrence_: Black Rock (Dellinger and Black, 1938:46). _Madison_: _Scott_: _St. Francis_: (Dowling, _loc. cit._). _Washington_: near Greenland (Dellinger and Black, _loc. cit._). COLORADO: _Boulder_: Boulder Creek, E Boulder; Boulder Creek, 6 mi. S and 1 mi. E Longmont. _Larimer_: Cache la Poudre River. _Logan_: 8 mi. NE Sterling. _Morgan_: Platte River "near" Fort Morgan. _Otero_: Purgatoire River at Higbee. _Prowers_: Arkansas River at Lamar. _Weld_: Poudre River "near" Greeley; Evans. _Yuma_: Bonny Dam, Republican River (Maslin, 1959:24-25). IOWA: _Dickinson_: Little Sioux River, Okoboji Twp. (Blanchard, 1923:24). _Story_: Skunk River, 5 mi. NNE Ames (Conant and Goin, 1948:9).