on in this individual.

In addition to the skins in unworn and worn pelages already
described from Two Buttes, an extremely dark specimen is at
hand from Two Buttes peak, taken on 9 May 1950. This specimen
(KU 37141 [Female]) is an adult in moderately worn pelage. The
back is dark brownish gray (Taupe, 16 A 6), the sides lighter
(a shade lighter than Beaver, 15 A 6). The entire underparts
are washed with reddish buff (Grain, 11 B 5) over the gray
basal coloration, with a patch of white only in the genital
region. The dark eye ring and dark line around the mouth are
heavier than usual. The underside of the tail is light gray.
The white hind feet are sharply set off from the dark gray
ankles.

Each of four skulls from Regnier (three adults and one
subadult) differs from skulls from Two Buttes in having a
longer interparietal with a posterior angle. The skins of five
adults collected in December at Trinchera are less richly
colored on the sides than skins from Two Buttes and look more
nearly like topotypes of _N. m. fallax_. The skull of one of
the five from Trinchera differs from skulls from Two Buttes in
much narrower nasals anteriorly, narrower rostrum, much
narrower upper incisors, and smaller zygomatic breadth, these
characters being as in _fallax_.

Four adults and one subadult from Trinidad are intergrades
between _N. m. scopulorum_ and _N. m. fallax_, perhaps more
nearly resembling the former. In pelage they are
indistinguishable from specimens of _fallax_ from Gold Hill
(the type locality), less buff than most individuals of
_scopulorum_ from Otero, Prowers, and Baca counties. The
skulls of the three fully mature adults are large with a wide
zygomatic breadth, large rostrum, and large upper incisors as
in _scopulorum_; but the upper molars are small and the bullae
are rather small and narrow as in _fallax_. In the degree of
arching at the base of the rostrum, the shape of the frontal,
the shape of the interparietal, and the size of the upper
molars, the specimens from Trinidad are intermediate. It seems
to me best to refer them to _scopulorum_.

Two first-year adults from Fisher Peak and Long Canyon are
indistinguishable from topotypes of _fallax_ of similar age
and also resemble a young adult and a subadult from Tri