463 
Mr. R. Ridgway on the Genus Empidonax. 
yellow on belly, the throat huffy whitish, and 
lower tail-coverts yellowish white. Wing 
2*35-2*55 (average 2*43) inches, tail 1*90-2*15 
(2*05), culmen 0*48-0*50 (0*49), width of 
bill at base 0*20, tarsus 0*52-0*58 (0*56).— 
Hab. Southern Mexico . . E. fulvifrons rubicundus. 
c 2 . Upper parts dull greyish brown, lower parts pale 
buff, deepening into ochraceous buff on breast. 
Wing 2*20-2*45 (2*34) inches, tail 1*95-2*14 
(2*06), culmen 0*50-0*55 (0*52), width of bill at 
base 0*20-0*22 (0*21).— Hab. North-western 
Mexico and contiguous portions of Arizona 
and New Mexico .. . E. fulvifrons pygmceus. 
b 2 . Lower parts whitish or yellowish, shaded across 
breast with greyish or olivaceous. 
c\ Upper parts umber-brown. 
d l . Lower tail-coverts buff; whitish in very much 
worn specimens only. Above brownish, 
darker on top of head, the wing-bands vary¬ 
ing from dull light brownish buff to tawny; 
chin and throat white; rest of lower parts 
pale smoky buff, shaded across breast with 
smoky brown; under wing-coverts deep buff 
or ochreous. Wing 2*35-2*40 (2*37) inches, 
tail 2*15-2*32 (2*24), culmen 0*60-0*67 (0*64), 
width of bill at base 0*30, tarsus 0*67-0*68.— 
Hab. Southern Mexico (Vera Cruz) to Gua¬ 
temala .... E. albigularis. 
(P. Lower tail-coverts white or very pale sulphur- 
yellow. Upper parts uniform brown, the 
wing-bands buffy; lower parts dull whitish, 
tinged with pale sulphur-yellow, the throat 
and lower tail-coverts more distinctly 
whitish ; under wing-coverts and thighs deep 
dull buff. Wing 2*35-2*tjo (2*42) inches, 
Lj0 tail 2*30, culmen 0*59-0*60', width of bill at 
4 
(h 
base 0*25,- tarsus 0*55/— Hab. Paraguay and —>3 £> j 
South-eastern Brazil '.. E. brunneus. 
c z . Upper parts olive, olive-greenish, or greyish. 
d\. Lower parts not distinctly yellowish. 
e 1 . First quill shorter than ninth. Above deep 
olive, the hind neck more greyish, and top 
of head dull slaty; wing-bands very sharply 
defined, dull white or very pale olive- 
greyish, in conspicuous contrast with the 
-i. 
, 4a 
