84 Synopsis of the Birds 



125. Sylvia canadensis, Lath. Slate colour; beneath white ; 

 cheeks and throat black ; a white spot on the wings ; three 

 lateral tail feathers with white on the inner web. 



Black-throated blue Warbler, Sylvia canadensis, Wils. Am, 

 Om. ii.p. \\5.pl. 15. jig. 7. 



Inhabits North America : transient visitors from the south, 

 where they winter, to the north where they breed : rather 

 rare. 



126. Sylvia ag ilis, Wils. Yellow-olive ; beneath yellow: 

 throat pale ash. 



Female, throat dull buff. 



Connecticut Warbler, Sylvia agilis, Wils. Am. Orn. v. 

 p. 64.pl. 39. jig. 4. 



A spring visitant in Pennsylvania, New-York, and New- 

 England : rare. 



127. Sylvia Formosa, Wils. Olive-green ; beneath, and line 

 over the eye, yellow ; crown deep black, spotted behind 

 with light ash ; lores, and spot curving down the neck, black. 



Female destitute of the curved spot. 



Kentucky Warbler, Sylvia formosa, Wils. Am. Orn. in. 

 p. n5.pl. 25. jig. 3. 



Inhabits the south-western part of the union, from Ken- 

 tucky to New Orleans, during summer : common. 



128. Sylvia autumnalis, Wils. Olive-green ; back streaked 

 with dusky ; beneath, and cheeks dull yellowish ; belly white ; 

 wings bifasciate with white, and with the tail blackish, each 

 feather edged with white ; three lateral tail feathers white near 

 the tip. 



Autumnal Warbler, Sylvia autumnalis, Wils. Am. Orn. Hi. 



p. 65- pi- 23. jig. 4. 



Passes through Pennsylvania in the spring : rare : more 

 common on its return in October. 



129. Sylvia trichas, Lath. Green-olive ; beneath yellow ; 

 front and wide patch through the eye black, bounded above 

 by bluish-white. 



