340 NORTH AMERICAN BIRDS. 



c". Upper pai-ts umber-brown, the top of Lead sometimes much darker 

 (sootj-). 



Above dull tirown, darker on top of head, the wing-bands varying 

 from dull light brownish buff to tawnj- ; chin and throat white ; 

 rest of lower parts pale smoky buff, shaded with smoky brown 

 across breast (whole lower parts dull whitish in much worn 

 plumage) ; under wing-coverts and thighs deep buff or ochra- 

 ceous; wing 2.35-2.40 (2.37), tail 2.15-2.32 (2.24), culmen .60- 

 .67 (.64), bill from nostril .32-.35 (.33), width at base .30, tarsus 

 .67-.68 (.67). liab. Southeastern Mexico (Vera Cruz) to high- 

 lauds of Guatemala. 



E. albigularis ScL. White-throated Flycatcher.' 

 r. U]iper parts olive, olive-greenish, or olive-grayish, 

 (i'. Lower parts without white (usually yellowish). 



e'. Under wing-coverts pale buff, deepening into ochraccous on 

 edge of wing. (Length 5.50-6.00.) 



Adult: Above dull grayish olive (more brownish in win- 

 ter), the wing-bands dull light buff}- grayish (more 

 buffy in winter) ; lower parts pale dull yellowish, in- 

 clining to sulphur-yellow on bellj- and under tail-cov- 

 erts, and faintly shaded with dull grayish brown across 

 breast. Young : Similar, but browner above, with wing- 

 bands ochraccous, or rustj- buff, the sulphur-3-ellow of 

 belly, etc., replaced by dull white. Male : Wing 2.50- 

 2.90 (2.65), tail 2.35-2.60 (2.43), culmen .57-.63 (.61\ 

 bill from nostril .29-.33 (.31), width at base .25-.28 

 (.27), tarsus .64-.6a (.08). Female: Wing 2.30-2.60 

 (2.44), tail 2.20-2.45 (2.32). JS'ests in clefts of old 

 stumps or logs, or similar situations, bulky, composed 

 of mosses, etc. Eggs .66 X -52, buffy white or pale 

 buff, speckled, chiefly round larger end, Avith rusty 

 brown, or cinnamon. JTab. Western United States, 

 north to Sitka; south, in winter, to western Mexico. 

 (49.) 464. E. difficilis I3.\ird. Western Flycatcher.' 



e'. Lender wing-coverts yellowish white, or pale sulphur-yellow. 

 /'. Wing-bands not darker (usually paler) than lower parts. 

 (Length 5.10-5.80.) 

 Adult: Above dull olivc-grecn, the wing-hands ]iale 

 olive-yellowish ; beneath pale dull sulphur-jellow, 

 shaded with olive across breast. Young : Similar, 

 but duller, with wing-bands buffj- or ochraccous. 

 Male : Wing 2.55-2.75 (2.64), tail" 2.10-2.30 (2.18), 



' Empidunnx alhlgularin ScL., Ibis, 1859, 122. Empidonax axillarif RiDGW., in Hist. Am. B. ii. 1874, 363. 

 ' Called " Baird's Flycatcher" in the A. 0. U. Cbock List, but this name belongs properly to E. bairdii 

 Set. 



