Measurements.—Measurements of holotype and average of four adults (two males and two females) from the type locality are as follows: total length, 104, 105.2; length of tail, 44, 47.5; length of hind foot, 16, 16.7; length of ear, 7, 7.2; occipitonasal length, 20.6, 20.9; frontonasal length, 14.0, 13.9; mastoidal breadth, 12.1, 12.0; length of bulla, 8.0, 7.8; interorbital breadth, 4.5, 4.6; alveolar length of upper molariform tooth-row, 3.3, 3.1; interparietal width, 3.2, 3.2. All of the measurements listed above are available for each of the five specimens except that the occipitonasal length and frontonasal length are not available for the two males.

Specimens examined.—Total, 54, distributed by localities of capture as shown below. Those from Nebraska and Colorado are in the US Nat'l Mus., Biol. Surv. Coll., and those from Kansas are in the Univ. Kansas Mus. Nat. Hist.

Nebraska:—Box Butte Co.: Alliance, 1.

Colorado:—Weld Co.: Greeley, 5. Kit Carson Co.: Burlington, 1. Fremont Co.: Canon City, 1.

Kansas:—Cheyenne County: 23 mi. [by road] NW St. Francis, 1. Rawlins County: 12 mi. NE McDonald, 1; 2 mi. NE Ludell, 1. Decatur County: 2 mi. S, 6 mi. W Oberlin, 1. Logan County: Vincent Ranch, N. Fork Smoky R., [= 4 mi. W and 8 mi. N McAllaster], 2; unspecified, 1. Gove County: Castle Rock, 1. Trego County: Wakeeney, 3. Hamilton County: 1 mi. E Coolidge, 8. Stanton County: 6 mi. W, 1-1/2 mi. S Manter, 1; 8-1/2 mi. W, 2-1/2 mi. S Manter, 1. Kiowa County: Rezeau Ranch, 5 mi. N Belvidere, 1. Morton County: 9 mi. N, 3 mi. E Elkhart, 18. Meade County: 9 mi. SW Meade, 1; 17 mi. SW Meade, 2. Clark County: Stephenson Ranch, 7 mi. S Kingsdown, 1.

Oklahoma:—Texas County: 2 mi. E Eva, 1.