TURDIDE—WARBLERS. 31 
SIBERIAN CHIFFCHAFF. 
Phylloscopus tristis Blyth. 
Adult Male: Similar to P. collybita, but earthy-brown 
above and beneath nearly white with exception of a shade of 
pale buff on breast and sides of body; wing shorter and 
rounder, second primary intermediate in length between sixth 
and eighth ; eye-stripe buffish, narrow, not reaching to nape ; 
bill dark brown ; Zegs, feet, and claws xearly black; irides 
brown. Length about 4 inches; culmen 0°3; wing 2°3; tail 
1q* tarsus 077. 
Female: Similar to male but smaller. 
Adult (Autumn): Buff eye-stripe more developed. 
Distribution : Summer visitant to valleys of Petchora and 
Kama, wintering in India. 
Habitat: Spruce firs, willows, &c., or long grass, in damp 
situations. 
CHIFFCHAFF.Y 
Phylloscopus collybita (Mez/). 
Adult (Summer): Above olive-green, yellower towards 
tail, which with the wings are brown, edged with yellow- 
ish-green ; second primary intermediate between sixth and 
seventh ; a slight, pale eye-stripe; beneath yellowish-white, 
yellower on breast and flanks; bill, /egs, feet, and claws 
blackish-brown ; irides brown. Length g'75 inches; culmen 
o°3; wing 2°4; tail 2; tarsus 0°6. 
Autumn: Whole "plumage suffused with buff, eye- stripe 
buff. 
Nestling: Above browner ; little or no eye-stripe ; beneath 
buffish-white. 
Distribution: A summer visitant to Northern temperate 
Europe, wintering on the shores of the Mediterranean. 
Habitat : Woods, groves, and gardens. 
WILLOW WARBLER OR WILLOW WRENV 
Phylloscopus trochilus (Lzzz). 
Adult (Summer): Above olive-green, yellower on rump ; 
