No. 3. 
REPORT ON MAMMALS COLLECTED ON THE SURVEY. 
BY S. F. BAIRD. 
VESPERTILIS PALLIDUS, Leconte .—White Bat. 
Vesper Mis pal lulus, Leconte, Pr. A. N, Sc. Phil. 
Of this white bat several specimens were collected. 
LYNX RUFUS var. MACULATUS.—Texas Wild Cat. 
Baird, Gen. Rep. Mammals, 1857, 93. 
Sp. Ch.—S imilar to the common wild cat, but with the general color red, with numerous dusky spots. 
A specimen collected in the Tejon valley agrees pretty well with skins from the Rio Grande 
of Texas. The prevailing color is pale reddish, the tips of the hairs yellowish gray. The 
dorsal region is rather darker, and exhibits some faint longitudinal dark lines. Numerous 
rounded spots or blotches of darker color are scattered over the whole outer surface which, though 
not very conspicuous, are distinctly visible. The spots are darker and more mixed with brown 
on the legs ; the under and inner surfaces are white ; there is a faint reddish color on the throat 
in advance of the fore legs. The belly is blotched, and the inside of the legs banded transversely 
with black. The chin is unspotted. The ears are black inside, with a moderately large patch 
of grayish white ; they are distinctly pencilled. The tail above is like the back, with several 
darker bands ; the terminal fifth however is black. 
SCIURUS FOSSOR, Peale .—California Grey Squirrel. 
Sciurus fossor, Peace, Mamm. and Birds U. S. Ex. Ex. 1848, 55.— Baird, Gen. Rep. Mammals, 1857, 264. 
Sciurus heermanni, Leconte, Pr. A. N. Sc. Phila. VI, Sept. 1852, 149. 
Sp. Ch.—S ize of S. vulpinus , but more slender. Tail vertebr® as loDg as (he body; with the hairs, much longer. Five upper 
molars Above, grizzled bluish gray and black; beneath, white, without any differently colored separating line. Tail black, 
with the exterior white ; the whole under surface finely grizzled. Back of ears and adjacent tufc on the occiput, chestnut. 
A specimen of a squirrel was obtained at Fort Tejon which in general character closely 
resembles the S. fossor. The body is smaller in proportion, although as the skin has been 
preserved in alcohol it has probably contracted considerably. There is no chestnut on the back 
of the ear, the tuft here being dirty white. In this respect it resembles the S. leporinus of 
Audubon & Bachman, which may prove to be the same species with S. fossor , and will have 
priority. 
SPERMOPHILUS BEECHEYI, Ri ch .—California Ground Squirrel. 
Arctomys ( Spermophilus) beecheyi, Richardson, Fauna Boreali-Americana, I, 1829, 170 ; plate xii, B.— Tb. Gen. Rep. 
Mammals, 1857, 307. 
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