Kansas. Finney County: 1 mi. S, 2 mi. E Garden City, 4. Ford County: ½ mi. NW Bellefont, 10; 6¼ mi. N Fowler, 2. Grant County: 2 mi. S, 9 mi. W Santanta, 1. Kearney County: 3½ mi. N, 4 mi. E Lakin, 4. Meade County: within 2½ mi. Fowler, 10; Meade County State Park, 14 mi. SW Meade, 48; 17 mi. SW Meade, 5. Morton County: 7½ mi. S Richfield, 4; 8 mi. N Elkhart, 1; 7½ mi. N, 1½ mi. W Elkhart, 2. Seward County: 3 mi. NE Liberal, 1. Stanton County: 1 mi. N, 6-7½ mi. W Manter, 2; dam of Lake Stanton, 1.
New Mexico. Bernalillo County: 6½ mi. E Alameda, 11; 5 mi. W Albuquerque, 3. Catron County: 1 mi. NE Apache Creek, 4; Apache Creek, 2. Guadalupe County: 4 mi. SW Santa Rosa, 4700 ft., 10. McKinley County: Upper Nutria, 7200 ft., 2. Rio Arriba County: 4 mi. N El Rito, 1; 1 mi. SE El Rito, 1. Sandoval County: 3 mi. N La Cueva Rec. Area, 1. San Juan County: 2 mi. N La Plata, 15. Santa Fe County: 1 mi. W Santa Fe Municipal Airport, 1; La Bajada Grade, 20 mi. W Santa Fe, 1. Socorro County: 2 mi. S San Antonio, 4.
Oklahoma. Beaver County: 7 mi. S Turpin, 1. Texas County: 3½ mi. SW Optima, 8.
Texas. Hansford County: 10 mi. S, 1 mi. W Gruver, 2. Hutchinson County: 9 mi. E Stinnett, 1 (TU).
Reithrodontomys megalotis dychei J. A. Allen
Reithrodontomys dychei J. A. Allen, Bull. Amer. Mus. Nat. Hist., 7:120, May 21, 1895 (type locality, Lawrence, Douglas Co., Kansas).
Reithrodontomys megalotis dychei, A. H. Howell, N. Amer. Fauna, 36:30, June 5, 1914.
Reithrodontomys dychei nebrascensis J. A. Allen, Bull. Amer. Mus. Nat. Hist., 7:122, May 21, 1895 (type locality, Kennedy, Cherry Co., Nebraska).
Distribution.—Southwestern Wisconsin, southern Minnesota, northwestern Illinois, Iowa, Missouri and northwestern Arkansas, west through Kansas (except southwestern part), Nebraska and the Dakotas to the foothills of the Rocky Mountains from central Colorado to southeastern Alberta.
External measurements.—Average and extremes of 17 adults (11 males, 6 females) from Douglas County, Kansas, are: total length, 134.2 (115-151); length of tail-vertebrae, 64.2 (59-72); length of hind foot, 16.7 (15-18); length of ear from notch, 13.4 (12-15); tail averaging 91.7 per cent of length of body. Corresponding measurements of 20 adults (14 males, 6 females) from Cherry County, Nebraska, are: 135.3 (122-155); 62.9 (56-72); 17.5 (17-18); 13.0 (12-14); tail averaging 86.9 per cent of length of body. For cranial measurements see Tables 1 and 2.