washed with
Pale Smoke Gray; antipalmar and antiplantar surfaces of feet
Pinkish Cinnamon; dorsal surface of tail Fuscous Black;
ventral surface of tail Ochraceous Tawny, Fuscous Black along
margin, Cinnamon Buff along outermost edge; underparts creamy
white. _Skull_: As in _E. q. quadrivittatus_. _Baculum_: Same
proportions as in _E. q. quadrivittatus_ but smaller.

_Comparisons._--See under the account of _E. q.
quadrivittatus_.

_Remarks._--Topotypes of this subspecies are intergrades between it
and _E. q. quadrivittatus_.

In a large part of the geographic range of _E. q. hopiensis_ there are
numerous, massive outcrops of Mesozoic sandstones, which tend to form
cliffs, that are brightly colored with many shades of red. The color
which is characteristic of _E. q. hopiensis_ seems to be helpful in
adapting this subspecies to this habitat of red sandstone, for these
chipmunks are generally found in the rubble and among the pinon at the
base of the cliffs. At many places in Utah above these cliffs of red
sandstone there are forests predominantly composed of yellow pine.
Kelson (1951:42-43) states that "these two habitats are in immediate
juxtaposition, the transition from one to the other often occurring in
only a few feet ..." and again, "No one to my knowledge, has found any
evidence in specimens from Utah of interbreeding of _E. q. hopiensis_
with either _E. q. adsitus_ [= _E. umbrinus adsitus_] or _E. q.
umbrinus_ [= _E. u. umbrinus_]." Benson (1935:449) states, "On Navajo
Mountain these chipmunks [_E. q. hopiensis_] were most in evidence on
rock outcrops surrounded by brush at the lower edge of the yellow pine
zone. One was seen at about 9,500 feet in a south-facing rock outcrop
near the spruce-fir forest, but no chipmunk of any kind was seen in
the forest itself." This suggests that where only _E. q. hopiensis_
occurs on a mountain this subspecies goes higher than on a mountain
where _E. u. adsitus_ also occurs. This same relationship between
_E. q. quadrivittatus_ and the subspecies of _E. umbrinus_ that occurs
in north-central Colorado was pointed out in the account of _E. q.
quadrivittatus_.

_Specimens examined._--Total number, 68.

=Utah=: _Uintah Co._: E side of confluence of Green and
White rivers, 1 mi. SE Ouray, 4,700 ft., 3 UU. _Grand Co._:
Colorado River above Moab, 1 UU; side canyon of Colorado
River above Moab, 1 UU; Moab, up Colorado River, 1