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 sharpl}^ 

 detined partly concealed black spots. 



Young rnale hi fird autumn and vulnter. — Similar to the Avinter 

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

 slightly tinged with 3^ellow, sometimes without a trace of this color/ 



Young^ first j^lxmage. — Al)ove thickl}^ streaked with dusk}- 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 pai"ts grayish white, everywhere streaked with dusky. 



Adult m«^^.— 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, 11.5-14 (12.5). '^ 



Adult female.— Length, (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 (rreat 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 valleys) 

 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 Pennsjdvania. 



St/lvia auduboni Townsend, Journ. Ac. Nat. Sci. Phila., vii, 1837, 191 ("forests 

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



Sylvia audubonii Audubon, Orn. Biog., v, 1839, 52, pi. 395. 



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

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

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

 i, 1847, 37. 



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

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



M[niotilta'] auduboni Gray, Gen. Birds, i, 1848, 196. 



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



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

 Oaxaco, s. Mexico). — Baird, Brewer, and Ridgway, Hist. N. Am. Birds, i, 

 1874, 229, pi. 13, fig. 1.— Ridgway, Bull. Essex Inst., vii, 1875, 12, 17 (Car- 

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



' In 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. 



