BIRDS — SYLVICOLIDAE — OPOROENIS FORMOSUS. 



247 



the ash of the throat is so strongly tinged with brownish (with perhaps a tinge of olive) as to 

 obscure the ash. The crown also is like the back. 



The Trichas tephrocotis of Nuttall appears to be only an adult in very full plumage, with the 

 entire head above clear bluish ash, (as just referred to in No. 2939,) instead of glossed with 

 olivaceous, as in most specimens. 



List of specimens. 



OPORORNIS FORMOSUS, Baird. 



Kentucky Warbler. 



^ Sylvia formosa, Wilson, Am. Orn. Ill, 1811, 85 ; pi. xxv, f. 3.— Bonap. Obs. Wils. 1825-6, 156.— Nuttall, Man. 



I, 1832, 399.— Audubon, Orn. Eiog. I, 1839, 196; pi. 38. 

 Sylvicola formosa, Jakdine ed. Wilson, 1832. — Rich. List, 1837. — Eonap. List, 1838. 

 Myiodioctesformosus, Aun. Syn. 1839, 50. — Is. Birds America, 11, 1841, 19 ; pi. 74. — Bonap. Conspectus, 1850, 315. 



Sp. Ch. — Upper parts and sides darli olive green. Crown and sides of the head, including a triangular patch from behind 

 the eye down the side of the neck, black, the feathers of the crown narrowly lunulated at tips with dark ash. A line from 

 nostrils over the eye and encircling it (except anteriorly) with the entire under parts, bright yellow. No white on the tail. 

 Female similar, with less black on the head. Length, 5 inches ; wing, 2.95 ; tail, 2.25. 



Hab. — Eastern United States as far west as Fort Riley, south to Guatemala. 



The wings of this species are long and pointed ; the first three nearly equal and considerably 

 longer than the rest. 



The tail is slightly rounded. 



List of specimens. 



