518 
IJ S. P. R. R. EXP. AND SURVEYS—ZOOLOGY-GENERAL REEORT. 
List of specimens. 
Catal.No. 
Sex. 
Locality. 
When collected. 
Whence obtained. 
Orig. No. 
Collected by— 
6744 
San Francisco, Cal_ 
R. D. Cutts.. 
6745 
6742 
Presidio, Cal.. 
Lt. Trowbridge_ 
5559 
s 
Petaluma, Cal... 
April —, 1856.. 
E. Samuels.. 
653 
4943 
San Josd, Cal._ 
A. J. Grayson_ 
4 
5970 1 
Santa Clara, Cal_ 
Gov. Stevens. __ 
Dr. Cooper...._ 
5968 
do_______ 
5967 
_do___ 
_do_ 
6746 
<? 
Sacramento valley_ 
. 
Lt. Williamson_ 
Dr. Heermann__ 
3710 
9 
Monterey_ 
June 22, 1848_ 
Wm. Hutton___ 
Fort Tejon, Cal._ 
J. Xantns de Vesey 
6743 
<? 
Tejon valley_ 
Lt. Williamson_ 
Dr. Heerman. __ 
3911 
California_ 
Dr. Heermann_ 
1 Length, 9.00 ; Extent, 12.50 ; Iris redish brown. 
PIPILO MESOLEUCUS, Baird. 
Pipilo mesoleucus, Baird, Pr. A. N. Sc. Ph. VII, June 1854, 119. (Rocky Mountains.) 
Sp. Ch. —Above olivaceous brown, with a grayish tinge ; hood dull chestnut, conspicuously different from the back. Sides 
beyond the edge of the wing like the back, but paler ; posteriorly, and about the vent and under tail coverts, pale brownish red. 
The ashy olive brown of the sides scarcely meeting across the breast, the lower portion of which, with the upper belly, is rather 
pure white. The chin, throat, and upper part of the breast pale yellowish rufous, spotted on the sides and across the breast 
with brown; an obscure spot in the middle of the breast ; edge of outer primary white. 
Length 8.50 inches ; wing, 3.80 ; tail 4.70. 
Hab .—Valley of upper Rio Grande and across to the Gila River. East to Santa Caterina, New Leon. 
This species is similar in general appearance to the P. fuscus, hut the olive hrown and rufous 
are both of a lighter shade. The crown is of a decided chestnut, conspicuously different from the 
hack, instead of nearly the same tint. The light reddish under the head is wider throughout 
and extends down to the upper part of the hreast, blending with the colors of the breast and 
belly, instead of being narrower, more sharply defined, and restricted to the chin and throat. 
The isolated larger spot on the hreast is more conspicuous ; the hreast and belly are quite pure 
white, shaded with obsolete brownish blotches, instead of being uniform grayish brown, with 
only an approach to whitish in the very middle. The edges of the wing and tail feathers are a 
good deal lighter, the outer web of the first primary being sharply edged with pure white, 
instead of obscure grayish brown. The size generally is rather smaller. 
