ial differences are evident between the two subspecies; the
differences in pelage noted by Doutt (_op. cit._:161), however
("Similar to _Clethrionomys gapperi galei_ from Ward, Colorado, but
head and cheeks grayer; sides and back paler; belly whiter."), do seem
to be valid.

On the basis of these differences in pelage and the geographic
isolation of the range, we judge that _uintaensis_ should be retained
as a subspecies of _C. gapperi_. It is clear, however, that _C. g.
uintaensis_ is less distinct from _C. g. galei_ than are the other
adjacent subspecies.

_Specimens examined._--Total, 8, all in the University of Kansas
Museum of Natural History, distributed as follows:

+Wyoming+: _Uinta County_: 9 mi. S Robertson, 8000-8400 ft., 3; 9 mi.
S and 2 mi. E Robertson, 8000 ft., 2; 11-1/2 mi. S and 2 mi. E
Robertson, 9200 ft., 1; 14 mi. S and 2 mi. E Robertson, 9000 ft., 1.

+Utah+: _Uintah County_: Paradise Park, 21 mi. W, 15 mi. N Vernal,
10,050 ft., 1.

_Additional, marginal records_ (Durrant, Univ. Kansas Publ., Mus. Nat.
Hist., 6:356, August 19, 1952).--+Utah+: _Rich Co._: Monte Cristo, 18
mi. W Woodruff, 8000 ft. _Salt Lake Co._: Emigration Canyon, 8 mi.
above forks, 6,000 ft.; Silver Lake Post Office (Brighton), 9,500 ft.
_Wasatch Co._: Wolf Creek Summit, 9,800 ft. _Daggett Co._: Beaver
Dams, 10,500 ft.

+Clethrionomys gapperi gauti+, new subspecies

_Type._--Male, adult, skin and skull; No. 133515, Biological Surveys
Collections, United States National Museum, from Twining, 10,700 ft.,
Taos County, New Mexico; obtained on August 7, 1904, by James H. Gaut,
original number 3086.

_Range._--The Rocky Mountains of north-central New Mexico and
south-central Colorado.

_Diagnosis._--A brightly colored _Clethrionomys gapperi_; dorsal
stripe near Chestnut (capitalized color terms after Ridgway, Color
Standards and Color Nomenclature, Washington, D. C., 1912) with an
underwash of near Light Ochraceous-Buff and a mixture of black-tipped
guard hairs giving an over-all effect of between Tawny and Russet;
braincase relatively large; zygomatic width and lambdoidal width
large; nasals long.

_Comparisons._--As compared with topotypes of _C. g. galei_, the color
is lighter, the dorsal reddish stripe slightly narrower, sides
brighter, with a wash of Light Ochraceous-Buff, grading ventrally into
a slight wash of Pale Ochraceous-Buff, instead of a silvery-white
venter characteristic of _C. g. galei_; zygomatic and