BIRDS — PERDICIDAE LOPHORTYX GAMBELII. 645 
List of specimens. 
Catal. No. 
Sex. 
Locality. Iwhen collected. 
Whence obtaine 1 
flriff "NTr» 
Wllg. A.NU. 
^onecieu uy — 
4477 
4476 
4481 
9395 
5563 
5562 
4483 
4239 
4945 
4936 
9390 
9392 
9394 
9396 
9388 
Willamette valley, 0. T 
Lt. Williamson „. 
do 
Bodega, Cal 
Jan. — , 1855 
Lt. Trowbridge 
165 
T. A. Szabo 
Q 
3 
3 
do 
Wint. 1855-' 6 
R. D. Cutis 
San Jose, Cal 
9 
5 
9 
3 
Q 

do 
3 
A. Schott. 
Mar. 14, 1854 
Lieut. Whipple 
183 
LOPHORTYX GAMBELII, N u 1 1 a 1 1 . 
Gambel's Partridge. 
Lophortyx gambelii, "Nuttall," Gambel, Pr. A.N. Sc. Phil. 1, 1843, 260. — McCall, Pr. A. N. Sc. V, .Time, 
1851, 221. 
Callipepla gambelii, Gould, Mon. Odont. pi. xvii .— Cassin, Illust. I, n, 1853, 45 ; pi. ix. 
Callipepla venusta, Gould, Pr. Zool. Soc. XIV, 1846, 70. 
Sp. Ch.— Head with a crest of five or six purplish black feathers, about as long as the bill and head together, or a little longer. 
Upper parts, with the neck all round, and the breast, plumbeous gray ; the shafts of the feathers brown ; those on the neck 
above and on the sides edged with same. Anterior half of head all round, with the chin and upper part of throat, and a large 
spot on the belly, black ; the forehead streaked with hoary gray. Top of the head chestnut, bordered anteriorly and laterally 
by black, immediately succeeded by an abruptly defined white stripe. A second stripe starts from the posterior corner of the 
eye and borders the black on the side of head and on the throat all round. Belly pale brownish yellow ; the sides of the body 
dark orange brown, broadly streaked centrally with white. Inner edges of tertials light brownish yellow. Tail light plumbeous. 
Female without the black and white of the head and the black of the belly, and only a slight trace of the chestnut crown ; the 
crest shorter and of fewer feathers. 
Length, 9.50 inches ; wing, 4.50 ; tail, 4.25. 
Hab.— Upper Rio Grande and Gila to the Colorado of California. 
In many specimens there is a fine mottling on the outer surface of the wings, and an appear- 
ance of the same on the gray of the hreast and back, hut this latter is merely an optical illusion. 
The feathers on the forehead are stiff and bristly, their central portions or shafts are black ; 
the lateral filaments hoary gray, although the general effect is nearly black. 
This fine species belongs chiefly to the Rocky mountain region, from the Upper Rio Grande 
to the Colorado river. It is found as far north on this river as the parallel of 3G°, and is very 
abundant in Sonora. In the limits assigned it appears to replace the L. califomicus, which is 
peculiar to the western slope. 
