PROCEEDINGS OF UNITED STATES NATIONAL MUSEUM. 157 
which was the discovery that the specimens in question were A. cervinus 
(Pall.), in winter plumage. 
As this species must now be added to the North American fauna, a 
description is in order, and is accordingly presented herewith. 
Adult, winter plumage (No. 89799, San José del Cabo, January 26, 1883) : 
Above light grayish olive-brown, everywhere very broadly and distinctly 
streaked with dusky, the streaks much broader, and nearly black, on the 
dorsal region; wings and tail brownish dusky, all the feathers edged 
with light brownish, the edge of the longer tertials pale buffy, and the 
terminal borders of the middle and greater wing-coverts nearly white; 
outer tail-feather with a considerable portion of the inner web white at 
end and along shaft, the middle portion of the outer web also whitish ; 
next feather with a white spot at end of inner web. <A pale superciliary 
stripe, becoming bright rufous-buff above eyes and auriculars; a pale 
malar stripe, whitish anteriorly and posteriorly, but rufous-buff for about 
-20 of an inch in the middle portion; auriculars raw-umber brownish, 
paler in the middle portion (longitudinally). Lower parts dull white, 
the jugulum marked with very broad streaks, or longitudinal spots, 
of brownish-black, the breast, sides, and flanks with more lanceolate 
Streaks of the same; chin immaculate, but throat sparsely marked 
with minute streaks, and bounded on each side by a distinct submalar 
Stripe of aggregated blackish streaks; abdomen, anal region, and cris- 
sum immaculate buffy-white. Bill black, the basal third of the man- 
dible yellowish ; legs and feet uniform deep brown. Wing 3.30, first 
primary decidedly longest, the second and third equal, the fourth nearly 
-10 of an inch shorter; fifth .35 of an inch shorter than the fourth; ter- 
tials about .20 of an inch shorter than longest primary; tail 2.50, the 
intermedi about .10 of an inch shorter than lateral rectrices; culmen 
45, tarsus .85, middle toe .65, hind toe .40, hind claw .40. 
The summer plumage is similar, except the entire chin and throat, 
together with other light markings about the head, are deep cinnamon- 
buff, or fawn-color. 
The Chinese specimens, above alluded to (Nos. 91810, 11, and 712, Mirs 
Bay, January 22, 1882), agree very closely with Mr. Belding’s specimen. 
One of them, however (No. 91811), has scarcely a trace of the reddish 
on sides of head (present in both of the others), while the ground-color 
beneath has a slight sulphury-yellow tinge. 
In its winter plumage this species resembles somewhat A. pratensis in 
summer dress, but differs, among other particulars, in having the rump 
much less olivaceous, and very distinctly and broadly streaked. The 
measurements are quite similar. 
MARCH 9, 1883. 
