69. EMPIDONAX. 231 



bands dull light olive, sometimes inclining to russet ; lower parts 

 pale olive-yellowish, more decidedly olivaceous on breast ; edge of 

 wing dull ochraceous or fulvous : whole length 5-2 inches, wing 2-7, 

 tail 2 - 5. 



Hub. Mexico. 



The much duller colour above seems to distinguish this from the 

 next two species. 



a. Ad. sk. Cordova (Salle). Sclater Coll. 



b. Ad. sk. Mexico. Sclater Coll. 



c. Ad. sk. Mexico (Boucard). Salvin-Godman Coll. 



14. Empidonax salvini. 



Empidonax salvini, Ridgw. lbk, 1886, pp. 459, 467 ; id. Man. N. A 

 B. p. 341. 



Similar to E. bairdi, but much more brightly coloured, the upper 

 parts olive-green instead of olive-brown, the lower parts brighter 

 and clearer yellow, shaded across breast and along sides with olive- 

 green instead of brownish ; wing-bands light greenish olive instead 

 of ochreous brown, and under wing-coverts pale greenish yellow 

 (almost sulphur-yellow) instead of deep brownish ochre : whole 

 length 5-1 inches, wing 2-9, tail 2-5. Female similar. 



Hob. Guatemala. 



This form is almost exactly intermediate between E. bairdi of 

 Southern Mexico and E. flavescens of Costa Eica — so much so, in 

 fact, that it is not easy to decide to which of the two it is most 

 nearly related. In the colour of the upper parts it is more like the 

 latter than the former, and the colour of the wing-bands is almost 

 exactly the same. The yellow of the lower parts, however, is not 

 quite so deep, the breast is a decidedly more greenish olive, and the 

 under wing-coverts much paler yellow. (Ridgiuay.) 



a. 2 ad. sk. Volcan de Agua, above S. Sclater Coll. 



Diego (Salvin). 



b. S ad. sk. Calderas, Volcan de Fuego Sclater Coll. 



(Salvin). 



c. S ad. ; Calderas (Salvin). Salvin-Godman Coll. 

 d, e. $ ad. sk. 



/. Ad. sk. Clioctum, Vera Paz (Salvin). Salvin-Godman Coll. 



g. Ad. sk. Coban, Vera Paz (Salvin). Salvin-Godman Coll. 



h. Ad. sk. Guatemala. 0. Salvin [C.]. 



i. Ad. sk. Coban, Vera Paz (Const ancia) . Sclater Coll. 



j. Ad. sk. Honduras. D. Dyson [C.]. 



15. Empidonax flavescens. 



Empidonax flavescens, Later. Ann. Lye. N. Y. viii. p. 133, et ix 

 p. 115 (Costa Rica) ; Frantz. J. f. O. 1869, p. 308 (Costa Rica) : 

 Salv. P. Z. S. 1870, p. 198 (Veragua) ; Scl. et ,Salv. Nomencl. p. 52; 

 Boucard, P. Z. S. 1878, p. 64 (Costa Rica) ; Baird, Brew, et Ridgw 

 N. A. B. ii. p. 363 ; Ridgw. Ibis, 1886, p. 467. 



