five adult females, from the type locality, are as follows: Total length, ♂ 204 (193-226), ♀ 207 (193-210); length of tail, 56 (46-68), 56 (50-63); length of hind foot, 27.6 (26-30), 27.4 (27-28); basilar length, 30.7 (29.0-33.0), 30.1 (29.5-30.7); zygomatic breadth, 20.4 (18.9-21.6), 19.5 (18.8-20.0); least interorbital breadth, 6.2 (5.8-6.6), 6.1 (5.9-6.3); mastoidal breadth, 17.9 (16.9-18.5), 17.2 (16.7-17.6); length of nasals, 13.7 (12.4-14.7), 13.2 (12.8-13.9); breadth of rostrum, 7.0 (6.5-7.5), 6.9 (6.7-7.3); length of rostrum, 16.3 (15.3-17.5), 15.8 (15.3-16.1); alveolar length of maxillary tooth-row, 7.1 (6.9-7.3), 7.1 (6.8-7.5).

Specimens examined.—Total number 26 and unless otherwise indicated in the Museum of Natural History of the University of Kansas.

Wyoming.—Carbon County: Savery (8 mi. N and 19-½ mi. E, 8800 ft., 12; 7 mi. N and 17 mi. E, 8300 ft., 1; 6 mi. N and 12-½ mi. E, 8400 ft., 1; 6 mi. N and 13-½ mi. E, 8400 ft., 2; 6 mi. N and 14-½ mi. E, 8350 ft., 1; 5 mi. N and 3 mi. E, 6800 ft., 1; 4 mi. N and 8 mi. E, 7800 ft., 7300 ft., 3; 4 mi. N and 10 mi. E, 7800 ft., 3) 24.

Colorado—Routt Co. ?: Elkhead Mts., 20 mi. SE Slater, 2 (U. S. B. S.).

    Museum of Natural History, University of Kansas, Lawrence. Transmitted October 20, 1951.

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