SYLVIADiE. 211 



Form, &c. — Typical. Wings pointed. First quill longest, second and third scarcely 

 shorter, fourth about two lines shorter ; secondaries truncated and notched at the end. Tail 

 slightly forked, the middle feathers being more than a quarter of an inch shorter than the 

 outer ones. Tarsus protected by a single entire scale, having a longitudinal fold on each 

 side ; the tarsal joint covered anteriorly by three transverse scales. The lateral toes are equal 

 to each other and considerably shorter than the middle one. The outer nail is the smallest. 

 The hind toe is the shortest, but most robust, and it has the largest claw. 





Dimensions. 



Inches. 



Lines. 





ength from the tip of the bill to the end of 





Length of the middle toe 



the tail 7 







„ of its claw 



,, of the tail . . . .2 



8 



,, of the hind toe 



,, of the longest quill feather . 3 



6 



,, of its claw 



,, of the tarsus . . . .0 



10 





Inches. 

 



Lini 

 8, 







2 







4J 







3 



DESCRIPTION 



Of a young bird, in Mr. Swainson's collection, killed near Philadelphia. 



Colour of the upper aspect of the head dark broccoli-brown. The back of the neck, 

 scapularies, interscapularies, and lesser wing coverts present the same colour, the tips having a 

 darker tint, with a greyish-white oval mark on each shaft ; back and rump lavender-purple. 

 A dark-blue feather among the scapularies, and another on the rump, shew that the specimen 

 was assuming its perfect plumage when killed. The exterior webs of the quill and tail fea- 

 thers have a brilliant china-blue colour, approaching to ultramarine, their tips blackish. 

 Under plumage pale ash-grey, edged on the throat, breast, and flanks with yellowish-brown . 

 The brown borders are broadest on the sides of the neck. 



[46.] 1. Sylvicola estiva. (Swainson.) Citron Warbler. 



Sub-family, Parianae. Swainson. Genus, Sylvicola. Sw. 



Le Figuer de Canada. Brisson. Orn., iii., p. 492, No. 21, pi. 2C, f. 3. 



Le Figuer de la Caroline. Buffon. PI. Enl. 58, f. 1. Female. 



Le Figuer de Canada. Idem, 58, f. 2. Male. 



Yellow-poll Warbler. Penn. Arct. Zool., ii., p. 402, No. 292. Male. 



Olive Warbler. Idem, p. 409, No. 307. Female. 



Blue-eyed Yellow Warbler (Sylvia citrinella). Wilson, ii., p. Ill, pi. 15, f. 6. 



Sylvia aestiva. Sabine. Franklin's Journ., p. 6'74 ; Bonap. Syn., p. 83, No. 122. 



Oosowow-peetheesees (Small Yellow-bird). Cb.ee Indians. 



This species is known throughout the whole of the fur-countries, as far north 

 as the woods extend, or to the sixty-eighth parallel of latitude ; and being a 



•2 e 2 



