In his mammals of utah, Durrant (Univ. Kansas Pubis. Mus. Nat. Hist., 6:1–549,1952) listed Lagurus curtatus intermedius and L. c . levidensis as occurring in Utah. To the former he assigned a range including all of Utah west of 112° W Longitude, with the exception of the Bonneville Salt Flats, and to the latter, the northern slopes of the Uinta Mountains and the East Tavaputs Plateau. Subsequently several specimens of this species were collected from the Aquarius and Fishlake plateaus of south-central Utah. These specimens were taken from areas where they were not previously known to occur and in ecological situations not generally regarded as their preferred habitat. The inadequately known relationships among the named subspecies of this species have been commented upon by Hall (mammals of nevada, Univ. California Press, 1946: 561) and Durrant ( loc. cit.: 380). Since the geographical variation of the sagebrush vole is so little understood and because of the fact that the majority of localities from which adequate series are available are “spotty” and widely separated, topotypes or near topotypes of all the named subspecies were obtained for comparative purposes. Critical comparisons of specimens herein described as new with specimens of the named kinds leave no doubt that these specimens definitely merit naming and recognition as a new subspecies. All measurements are in millimeters and capitalized color terms are from Ridgway (color standards and color nomenclature, Washington, D. C., 1912). Acknowledgements.—The writers acknowledge with thanks the kind loan of specimens for comparative purposes by: Dr. Ernest S. Booth, Walla Walla College; Dr. J. E. Moore, University of Alberta; Dr. Seth B. Benson, University of California; Miss Viola Schantz, U. S. Fish and Wildlife Service; and Dr. …