Fig. 1.--Geographic ranges of the subspecies of Clethrionomys gapperi in the southern Rocky Mountains.

1. C. g. galei 3. C. g. uintaensis 5. C. g. limitis
2. C. g. brevicaudus 4. C. g. gauti 6. C. g. arizonensis

Clethrionomys gapperi brevicaudus (Merriam)

1891. Evotomys gapperi brevicaudus Merriam, N. Amer. Fauna, 5:119, July 30.

1897. Evotomys brevicaudus, Bailey, Proc. Biol. Soc. Washington, 11:129, May 13.

1942. Clethrionomys gapperi brevicaudus, Bole and Moulthrop, Sci. Publ. Cleveland Mus. Nat. Hist., 5:153, September 11.

Type locality.--Three miles N Custer, 6000 ft., South Dakota.

Range.--The Black Hills of South Dakota and Wyoming.