reek Mountains. To date neither specimens nor subsequent
sight records have been obtained from the Oquirrh Mountains, and we are
of the opinion that Durrant erred, and that the golden-mantled ground
squirrel does not inhabit these mountains. Therefore, it seems at this
writing that this subspecies, in Utah, occurs only in the extreme
western and northwestern parts of the state in the Deep Creek and Raft
River mountains, and not within the basin of Pleistocene Lake
Bonneville as formerly supposed.

_=Eutamias umbrinus umbrinus=_ (J. A. Allen). Uinta Chipmunk.--Two
specimens, numbers 10,236 and 10,237, from the junction of Argyle and
Minnie Maud creeks, Carbon County, prove that members of this
subspecies occur on the West Tavaputs Plateau, which is outside the
range ascribed to this subspecies by White (1953:572) and by Durrant
(1952:142). The grayish color of these specimens and the reduction of
ochraceous pigments constitute basis for referring the specimens to _E.
u. umbrinus_, and not to _E. u. adsitus_ or _E. u. montanus_. _E. u.
umbrinus_ on the West Tavaputs Plateau is separated from _E. u.
montanus_ on the East Tavaputs Plateau by the Green River and its deep
chasm.

_=Perognathus formosus incolatus=_ Hall. Long-tailed Pocket
Mouse.--Prior to the description of this subspecies by Hall (1941:56),
animals of this species had not been reported from within the basin of
the Pleistocene Lake Bonneville. When Durrant (1952) prepared his
manuscript he had but a single specimen from western Millard County and
one nearby record (Fautin, 1946:280). Additional specimens are known
from the following localities: junction of Trout Creek and Birch Creek,
Deep Creek Mountains, Tooele County; six miles north of Ibapah, Tooele
County; five miles south of Timpie, Tooele County; north end of
Newfoundland Mountains, Boxelder County; and Groome, Boxelder County.
These occurrences show that the species is not restricted to the
extreme western part of the state, but occurs in suitable habitats
throughout the basin of Pleistocene Lake Bonneville. The known range is
extended approximately 150 miles north and 40 miles east.

_=Perognathus parvus trumbullensis=_ Benson. Great Basin Pocket
Mouse.--Durrant (1952:477), suspecting that this mouse occurred in
Utah, included the subspecies _P. p. trumbullensis_ in his hypothetical
list. Numerous specimens are now available from the following
localities: Pine Valley Mountains, Enterprise Reservo