BIRDS OF NORTH AND MIDDLE AMERICA. 553 



streaks of black, yellow of throat and lateral pectoral patches paler 

 and more restricted, and chest and sides of breast without sharply 

 defined partly concealed black spots. 



Young male in first autumn and winter. — Similar to the winter 

 female and not with certainty distinguishable (?), but with throat very 

 slightly tinged with yellow, sometimes without a trace of this color. ^ 



Young, first plumage. — Above thickly streaked with dusky on a 

 pale brownish gray ground color, the latter here and there inclining 

 to grayish white, the streaks broader and more blackish on back and 

 scapulars; lower rump grayish white, narrowly streaked with dusky; 

 under parts grayish white, everywhere streaked with duskj'. 



Adidt maZd.— Length (skins), 122-137 (130); wing, 75-81 "(77. 3); tail, 

 53-61.5 (58.3); exposed culmen, 10-11 (10.5); tarsus, 18-22 (20.5); 

 middle toe, 11.6-14 (12.5).' 



Advlt fenwle.—l^&A^ih (skins), 122-129 (126.1); wing, 73-78 (75.4); 

 tail, 54-59 (56.7); exposed culmen, 10-11 (10.3); tarsus, 19-21 (20.1); 

 middle toe, 11.5-13.5 (12.3).' 



Western North America, north to British Columbia, east to western 

 border of the Great Plains; breeding southward (in coniferous woods 

 on high mountains) to southern California (Los Angeles and San Ber- 

 nardino counties), northern Arizona, and New Mexico, eastward to 

 western Nebraska (Sioux County), Wyoming (Black Hills, etc.) and 

 Colorado; wintering from western United States (in lower valle}'s) 

 southward over whole of Mexico (including Lower California) to high- 

 lands of Guatemala (Totonicapam; San Geronimo), eastward to western 

 Texas (Concho and Tom Green counties. Ft. Davis, etc.), western 

 Kansas, etc.; accidental in Massachusetts (Cambridge, 1 spec, Nov. 

 15, 1876) and Pennsylvania. 



Bylma auduboni Townsend, Journ. Ac. Nat. Sci. Phila., vii, 1837, 191 ("forests 

 of the Columbia Kiver;" type in coll. U. S. Nat. Mus.); viii, 1839, 153. 



Sylvia auduiionii AvDVBOi^, Orn. Biog., v, 1839, 52, pi. 395. 



Sylvicola auduboni Bonapabte, Geog. and Comp. List, 1838, 21. — Audubon, Syn- 

 opsis, 1839, 52.— NuTTALL, Man. Orn. U. S. and Can., 2d ed., i, 1840, 414.— 

 Gameel, Proc. Ac. Nat. Sci. Phila., iii, 1846, 155; .Journ. Ac. Nat. Sci. Phila., 

 i, 1847, 37. 



Sylvicola audubonii Audubon, Birds Am., oct. ed., ii, 1841, 26, pi. 77. — Wood- 

 house, in Sitgreaves' Eep. Zufii and Col. R., 1853, 71. 



MlniotUta] auduboni Gray, Gen. Birds, i, 1848, 196. 



[MniotUia] auduboni Gray, Hand-list, i, 1869, 240, no. 3467. 



Dmdroica auduboni Sclater, Proc. Zool. Soc. Lond., 1858, 295, 298 (La Parada, 

 Oaxaco, s. Mexico).— Baibd, Brewer, and Eidgway, Hist. N. Am. Birds, i, 

 1874, 229, pi. 13, fig. ].— Eidgway, Bull. Essex lYist., vii, 1875, 12, 17 (Car- 

 son City and Truckee Valley, Nevada, winter).— Henshaw, Zool. Exp. W. 



Uu this stage to be distinguished from the corresponding stage of D. coronata by 

 having white subterminal spots on four to five, instead of two to three, outermost 

 rectrices. 



''Twelve specimens. ^ Eight specimens. 



