232 TYRANNID.E. 



Empidonax viridescens, Ridgw. P. U.S. N. M. vi. p. 413 (Costa 

 Rica). 



Above bright greenish olive (varying to tawny olive), the wing- 

 bands more ochraceous : lower parts bright sulphur-yellow, faintly 

 shaded across breast with tawny olive ; edge of wing varying from 

 light saffron-yellow to deep ochraceous buff: whole length 5 inches, 

 wing 2-6, tail 2-3. Female similar. 



Hob. Costa Rica and Veragua. 



A smaller southern form of E. salvini, but much darker on the 

 breast. 



Costa Rica (Rogers). Sclater Coll. 



Costa Rica (Boucai-d). Sclater Coll. 



Irazu, Costa Rica (Rogers). Salvin-Godman Coll. 



Dota, Costa Rica (Carmiol). Salvin-Godman Coll. 



Costa Rica. Purchased. 



Southern slope, Volcan de Chi- Salvin-Godman Coll. 



riqui (Arce). 



Chiriqui (Arce). Sclater Coll. 



Calovevora, Veragua (Arce). Salvin-Godman Coll. 



16. Empidonax hammondi. 



Tyrannula hammondii, De Vesey, Proc. Acad. Philad. 1858, p. 117. 



Empidonax hammondii, Baird, B. iV. Am. p. 199 ; Scl. Cat. A. B. 

 p. 230 ; Baird, Brew, et Ridgw. 2V. A. B. ii. p. 383 ; Henshaw, 

 Ann. Lye. N. Y. xi. p. 8 (Utah) ; Ridgw. P. U.S. N. M. i. p. 426 

 (C. California) ; id. Ibis, 1886, p. 467 ; id. Man. N. A. B. p. 344 ; 

 Brewer, P. U.S. N. M. ii. p. 1 (eggs) ; Coues, Key N. A. B. 1884, 

 p. 443. 



Above olive, usually more greyish anteriorly, especially on hind 

 neck ; wing-bands dull light olive-greyish ; lower parts varyiug 

 from dull greyish white, faintly tinged posteriorly with sulphur- 

 yellow, to decided olive-yellowish, the breast always strongly shaded 

 with olive or olive-greyish, the throat never distinctly whitish : 

 whole length 4-8 inches, wing 2 - 7, tail 2'3. 



Hab. Western North America. 



a. Ad. sk. N. America (Kenneriy). Sclater Coll. 



17. Empidonax obscurus. 



Tyrannula obscura, Sw. Phil. Mag. 1827, i. p. 367. 



Empidonax obscurus, Baird, B. N. Am. p. 200 ; Sclater, P. Z. S. 



1862, p. 19 (Mexico) ; id. Cat. A. B. p. 230 ; Scl. et Sah: Nomencl. 



p. 52 ; Henshaw, Ann. Lye. N. Y. xi. p. 8 (Utah) ; Baird, Brew. 



et Ridgjv. JY. A. B. ii. p. 381 ; Ridgw. P. U.S. N. M. i. p. 426 



(California) ; id. Ibis, 1886, p. 468 ; id. Man. N. A. B. p. 344 ; 



Brewer, P. U.S. N. M. ii. p. 1 (eggs) ; Coues, Key N. A. B. 



1884, p. 443. 

 Empidonax fulvipectus, Laivr. Ann. Lye. N. Y. x. p. 11 (1871) 



(City of Mexico) ; Salv. Ibis, 1874, p. 310 ; Ridgw. N. A. B. ii. 



p. 364 ; id. Ms, 1886, p. 468; id. Man. N. A. B. p. 344. 



