Mr. E. Ridgway on the Genus Empidonax. 459 



XLI, — Description of a new Species of the Genus Empidonax 

 from Guatemala. By Robert Ridgway, Curator Depart- 

 ment of Birds, United States National Museum. 



Empidonax salvini, sp. nov. 



Sp. Char. — Similar to E. bairdi, Sclater, but much brighter- 

 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. 



Young male (type No. 84053, U. S. Nat. Mus., Calderas, 

 Volcan de Fuego, Guatemala, Oct. 10, 1873, O. Salvin). 

 Above uniform bright olive-green ; wings and tail dusky, the 

 former with two distinct bands (across tips of middle and 

 greater coverts) of pale ochraceous or buff; remiges and 

 rectrices edged with light greenish olive, the secondaries, 

 however, with the basal portion uniform dusky. Lower 

 parts yellowish olive, paler and greyer on throat, and 

 becoming clear pale dull sulphur-yellow on abdomen, flanks, 

 and under tail -coverts; axillaries and under wing-coverts yel- 

 lowish white, tinged with sulphur-yellow, the edge of the 

 wing much deeper yellowish, with a buffy tinge. A very dis- 

 tinct orbital ring of paler yellowish. Upper mandible black, 

 lower entirely whitisb (yellowish in life?). Feet brownish. 

 Wing 2-75, tail 2-50, culmen -60, width of bill at base -29, 

 tarsus '70, middle toe "37. 



Adult male (Mus. P. L. Sclater ; same locality, &c.)» 

 Similar to the young, as described above, but, wing-bands 

 greenish olive instead of buffy, and yellow of lower parts 

 rather brighter. Wing 2-90, tail 2-65, culmen "62, width of 

 bill at base •25-28, tarsus -68, middle toe '38. 



This form is almost exactly intermediate between E. bairdi^ 

 Scl., of Southern Mexico, and E. flavescens, Lawr., of Costa 

 Rica — so much so, in fact, that it is not easy to decide as to 

 which it is most nearly related. In the colour of the upper 

 parts it is more like the latter than the former, and the 



