Mr. R. 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 salyini, sp. nov. 
Sp. Char .—Similar to E. hairdi , 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, 
Yolcan 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 whitish (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, bnt t 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. hairdi , 
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 
