SYLVANIA. 527 



6.75-7.50, wing (male) 2.90-3.20 (3.03), tail 2.90-3.35 (3.08). Eggs .89 X -67. 

 Sab. Eastern United States, north to Ontario and southern New England, 

 west to edge of Great Plains ; south, in winter, through eastern Mexico to 



Guatemala (Costa Eica?) 683. I. virens (Linn.). Yellow-breasted Chat. 



Above olive-gray (sometimes nearly pure gray); white malar stripe longer; 

 wings and tail longer ; length 7.00-8.00, wing (male) 3.05-3.35 (3.13), tail 

 3.30-3.60 (3.43). Eggs .89 X -69. Sab. Western United States, east to 

 Great Plains, south into Mexico. 



683a. I. virens longicauda (Lawr.). long-tailed Chat. 



Genus SYLVANIA Nuttall. (Page 483, pi. CXYIL, fig. 8.) 



Species. 



Wing with two whitish bands. 



Adult male : Above olive-green, the wing with two dull white bands, the 

 outer tail-feathers with a white spot near end of inner web ; a narrow 

 white orbital ring; lower parts pale yellow, fading into white pos- 

 teriorly; length 5.00. Sab. Kentucky. (One of the so-called "lost 

 species" of Audubon.) 



— . S. microcephala Eidgw. Small-headed "Warbler. 1 

 Wing without any markings. 

 b 1 . Upper parts olive-green. 



c l . Inner webs of outer tail-feathers with white patches. 



Adult male : Forehead and ear-coverts gamboge-yellow ; rest of 

 head and neck, including chest, uniform deep black; rest of 

 lower parts pure gamboge-yellow. Adult female : Similar to 

 male, but with black of head usually much less distinct, some- 

 times wholly absent, that of upper portions being replaced by 

 olive-green, that of throat, etc., by gamboge-yellow. Young in 

 first autumn : Similar to adult female, without black on head. 

 Length 5.00-5.70, wing 2.50-2.75, tail 2.20-2.40. West in low 

 bushes in undergrowth of high, damp woods. Eggs 3-4, .70 X 

 .53, white, or buffy white, speckled or spotted round larger end 

 with reddish brown and lilac-gray, usually mixed with a few 

 black specks or pen-lines. Sab. Eastern United States, north 

 to southern parts of Michigan, New York, and New England, 

 west to edge of Great Plains ; south, in winter, to Cuba, Ja- 

 maica, and through eastern Mexico and Central America to 



Panama 684. S. mitrata (Gmel.). Hooded Warbler. 



c'. Inner webs of tail-feathers without any white. (Adult males plain 

 olive-green above, the crown glossy blue-black; lower parts, and 

 sides of head, gamboge-yellow. Adult females similar to adult male, 

 but black crown-patch usually less distinct, often merely indicated, 



1 For references, see p. 357, A. 0. V. Check List. 



