100 
ISTo. 42,071, Mirador, Mexico, is extremely similar to the last, but 
lacks the ashy tinge on the side of the breast. Wing, 8.85 ; tail, 
7.80; culmen, 0.65; tarsus, 2.40; middle toe, 1.45. Another Mirador 
specimen (No. 23,809) is exactly similar; it measures: wing, 9.40; tail, 
8.10; tarsus, 2.30; middle toe, 1.45—nearly the same as the Washing¬ 
ton specimen. 
No. 5,841, Puget Sound, October 4, is exactly similar to No. 6,874 
(Sacramento Valley), and has, like it, the forehead strongly tinged with 
dull rusty. Wing, 8.90; tail, 8.00; culmen, 0.62; tarsus, 2.45 ; middle 
toe, 1.55. 
The adult females differ pretty constantly from the males in the much 
browner upper parts and rusty instead of ashy nape and auriculars, 
though this last feature is a less constant distinction. 
No. 26,588, Washington, D. C.:—Similar to the male, but the upper 
parts lacking entirely any bluish cast, and the rufous of the lower parts 
less viuaceous in tint. Forehead tinged with rusty-brown; neck and 
auriculars uniform dull rufous, with a rusty-brown tinge, and sides of 
the breast entirely destitute of ashy wash. Wing, 10.80; tail, 9.00; cul¬ 
men, 0.75; tarsus, 2.65; middle toe, 1.85; fourth and fifth quills equal 
and longest; third longer than sixth; second intermediate between 
sixth and seventh; first three inches shorter than the longest. 
No. 57,867, Tehuantepec, Southern Mexico (January 8,1869), is exactly 
like No. 26,588, except that the tibim are deeper and nearly uniform 
rufous. Wing, 10.35; tail, 9.40; culmen, 0.70; tarsus, 2.80; middle toe, 
1.70. 
No. 55,018, Mazatlan, Western Mexico (February 21), differs in having 
the rufous bars of the lower parts browner, more sharply defined, and 
more regularly transverse. Wing, 10.10; tail, 9.30; culmen, 0.75 ; tar¬ 
sus, 2.65 ; middle toe, 1.60. 
Two other specimens (No. 5,792, South Carolina, and Na. 49.6S2, Ari¬ 
zona) are very similar in colors to the last; their measurements may be 
found in the appended table. 
The following detailed descriptions of young birds are of specimens 
typical of the two supposed geographical styles:— 
Young male (55,498, Fort Macon, N. C., February; Dr. Cones. Type 
of var. cooperi in Hist. N. Am. Birds, iii, p. 231):—Above gray¬ 
ish-umber, the feathers of forehead, crown, and nape faintly edged 
with pale rusty; occiput unvaried blackish, feathers white beneath the 
surface. Wing-coverts, scapulars, and interscapulars narrowly bordered 
with pale yellowish-umber; rump and upper tail-coverts bordered with 
rusty. Tail paler and grayer than the back, narrowly tipped with white, 
and crossed by four bands of brownish-black, the first of which is only 
partially concealed. Scapulars and upper tail-coverts showing much 
concealed white, in form of roundish spots, on both webs. Beneath, 
clear white, without any yellowish tinge; throat with a medial and lat¬ 
eral series of clear dark-brown streaks; jugulum, breast, sides, flanks, 
and abdomen with numerous stripes of clear sepia, each showing a 
darker shaft-streak; tibise with longitudinal streaks of paler and more 
rusty brown ; lower tail-coverts immaculate. 
Young female (6876, “Sacramento Valley, Cal.’ 7 ; Dr. Heermann— 
probably from Pennsylvania. Type of var. cooperi in Hist. N. Am. B., 
iii, p. 231):—Similar to young male, but more varied. The black mid¬ 
dle streaks of feathers of head above narrower, causing more conspicu¬ 
ous streaks; white spots of scapular region considerably exposed; lon¬ 
gitudinal stripes beneath narrower and more sparse. 
& Young male (Fort Tejon, Gal., type of var. mexicanus , tom. cit. 232): 
