268 



O. S. P, R. R. EXP. AND SURVEYS — ZOOLOGY — GENERAL REPORT. 



the sides, continuous black ; rest of under parts white, tinged with yellow on the breast and flanks. Wings and tail feathers 

 darn brown, edged with bluish gray ; two white bands on the wing ; the greitcr part of the three outer tail feathers white. 

 Female similar, but duller ; the throat yellow ; tlie black of breast much concealed by white edges ; the sides streaked with 

 black. Length, 5 inches ; wing, 2.58; tail, 2.30. 



Ilab Eastern United States to the Missouri ; south to Guatemala. Greenland. (Reinliardt.) 



Nearly all the feathers of the upper parts show dusky centres. The forehead is yellowish, 

 the color extending sometimes along the median line of the crown. There is a dusky spot 

 behind the ear coverts. There is a decided tinge of yellow on the breast just below the black, 

 and on the sides of the anal region. The upper tail coverts are bluish gray streaked with 

 brown. The brown of the three outer tail feathers is confined mainly to the inner portion of 

 the outer web, though extending to the inner web at the tip; the middle tail feathers are brown, 

 with a narrow internal margin of white. The quills are margined internally with white ; the 

 lesser coverts are like the back. The bill is black, the feet brown. 



The male in autumn is quite similar ; the black of the throat and breast obscured by yellowish 

 white tips. The female is pale yellowish white beneath, tinged with grayish towards the tail. 

 There is less white on the tail. 



In one specimen of the species the third quill is longest ; next the second ; the first and 

 fourth about equal ; the tail is slightly rounded and emarginate. 



A specimen from China, Tamaulipas, is like Pennsylvania ones, but smaller. 



List of specimens. 



DENDROICA OCCIDENTALIS, Baird. 



Western M'arbler, 



Sylvia occidcntalis, Townsend, J. A. N. So. VII, ii, 1837, 190. — Ib. Narrative, 1839, 340. — Audubon, Orn. Biog. V, 



1839, 55 ; pi. 55. 

 Syhicola occidmtalis, Bonap. List, 1838.— Ib. Consp. 1850, 308.— Aud. Syn. 1839, 60.— Ib. Birds Am. II, 1841, 60 ; 



pi. 93. 

 Mniotilta occidentalU, Grat, Genera. 



Sp. Ch. — Crown, with sides of the head and neck, continuous bright yellow, feathers of the former edged narrowly with black ; 

 rest of upper parts dark brown, edged with bluish gray, so nmch so on the back and rump feathers as to obscure the brown, and 

 with an olivaceous shade. Chin, throat, and fore part of breast, (ending convexly behind in asubcrescontic outline,) I lack ; rest 

 of under parts white, faintly streaked on iho sides with black. Two while bands on the wii g, two outer tail feathers, and 

 the terminal portion of a third, white, the shafts, and an internal streak towards the end, dark brown. Bill jet black ; legs 

 brown. Length, 4.70 ; wing, 2.70 ; tail, 2.30. 



Hab. — Pacific coast. 



