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. Jim. 
Orn. ii.p. 115 .pi. 15 .fig. 7. 
Inhabits North America : transient visitors from the south, 
where they winter, to the north where they breed : rather 
rare. 
126 . Sylvia agilis, Wils. Yellow-olive ; beneath yellow; 
throat pale ash. 
Female, throat dull buff. 
Connecticut Warbler , Sylvia agilis, Wils. Am. Orn. ,v. 
p. 64 .pi. 39. fig. 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. Hi. 
p. 35.pl- 25* fig- 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. iii . 
p. 65- pi- 23 .fig. 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. 
