Abert's Squirrel 
Sciurus aberti (for Col. J. J. Abert). Abert's Squirrel 
Sciurus dorsalis Woodhouse {nec Gray), Proc. Acad. Nat. Sci. 
Phila., p. I lo (1852). 
Sciurus aberti Woodhouse, Proc. Acad. Nat. Sci. Phila., p. 220 
(1852). 
Type locality. — San Francisco Mountains, Arizona (Woodhouse). 
Measurements. — Total length, 20.2; tail vert., 8.9; hind foot, 
2.5-2.75. 
Description. — (From Mearns): Color plumbeous-gray above, 
with a broad dorsal area of reddish brown ; under surfaces, including 
the tail, pure white ; sides of the body with a black line separating 
the gray of the upper surface from the white of the under surface ; 
tail black at tip, mixed gray and black above, and white beneath. 
Ears long and pointed; in winter with chestnut hair at base, and 
blackish ear tufts more than an inch in length. 
Distribution. — Abert's Squirrel is found in the pine-covered 
plateaus and mountains of northeastern Arizona, and ranging 
east into New Mexico. C. P. Rowley collected some squirrels 
at Florida, La Plata County, Colorado, which were assigned by Dr. 
J. A. Allen to this form, but were the next described subspecies, 
which had not been described at the time Dr. Allen's paper was 
published, and which has since been taken in the San Juan Mountains 
a little to the eastward of Florida. Dr. Allen has kindly looked 
up the specimens, and reports they are S. a. mimtis, and the proba- 
bility is that typical aberti does not occur in Colorado. 
Habits. — See under S. a.ferreus. 
Sciurus aberti mimus (Lat. mimus, a mimic). 
Mimic Squirrel. 
Sciurus aberti mimus Merriam, Proc. Biol. Soc. Wash., xvii., p. 
130 (1904). 
Type locality. — Hall Peak, at south end of Cimarron Mountains, 
northeastern New Mexico (C. M. Barber). 
Measurements. — Total length, 19. i ; tail vert., 8.5 ; hind foot, 2.75. 
Description. — "Similar to 5. aberti, but gray of upper- parts 
decidedly paler; dorsal area usually obsolete or nearly so; upper side 
of tail paler; ear tufts pale fulvous, grizzled and tipped with black 
(instead of mainly black) ; tail apparently shorter." Merriam, /. c. 
Distribution. — Besides the type locality in northeastern New 
Mexico, the Mimic Squirrel has been reported from the eastern 
foot-hills of the San Juan Mountains, 10 miles west of Antonito, 
