EMI'IDOSAX. 341 



culmen .-IS-.SO (.51), bill from nostril .30-.32 (.31), 

 width at base .23-.28 (.20), tarsus .G4-.G8 (.66). 

 Female: Wing 2.40-2.50 (2.45), tail 2.00-2.25 

 (2.11). Nest embedded in mossj- bank, stump, or 

 log, composed of green moss, dry leaves, fine 

 sticks, etc., lined with fine black rootlets, dried 

 grass-blades, etc. ; external diameter about 4.00- 

 4.50, depth about 2,25-4.00; cavity about 1.25- 

 1.50 deep by 2.00 across. Eggs usually 4, .67 X 

 .51, colored like those of E. difficilis. Hab. East- 

 ern North America, breeding from northern 

 United States northward; south, in winter, 

 through eastern Mexico and Central America 



to Panama -103. E. flaviventris Baird. 



Yellow-bellied Flycatcher. 

 /». "Wing-bands darker than lower parts. 

 g\ Above dull olive. 



Adult: Above dull olive, the wing-bands dull 

 light olive, sometimes inclining to russet; 

 lower parts pale olive-yellowish, more de- 

 cidedly olivaceous on breast ; edge of wing 

 dull ochraceous or fulvous; wing 2.60-2.80 

 (2.72), tail 2.40-2.55 (2.49), culmen .58-.60 

 (.59), bill from nostril .32-.33 (.32), width at 

 base .25, tarsus .65-70 {.QS). Hah. Southern 

 and eastern Mexico (Oaxaca, Cordoba, Miia- 



dor, etc.) E. bairdii Scl. Baird's Flycatcher.' 



g'^. Above bright olive-green. Adult : Above bright olive- 

 green, the wing-bands similar, but paler, some- 

 times inclining to ochraceous; lower parts green- 

 ish sulphur-yellow, distinctly shaded across breast 

 and along sides with olive-green ; edge of wing 

 clear sulphur-yellow ; wing 2.50-2.90 (2.75), tail 

 2.15-2.65 (2.44), culmen .60-.03 (.61), bill from 

 nostril .32-.35 (.34), width at base .28-.30 (.29), 

 tarsus .08-.72 (.70). Hab. Highlands of Guatemala. 

 E. salvini Kidgw. Salvin's Flycatcher.' 



rf*. Lower parts partly white. 



e. First quill longer than seventh. 



/'. First quill usually equal to or longer than fifth ; color uni- 

 form olive-green or greenish gray above. (Length 

 5.50-5.90.) 

 Adult: Above varying from greenish gray to olivc- 

 "■reen, or even (in some winter specimens) almost 



1 E...pidonax bairdii ScL., P. Z. S. 1858, 301. ' Empidmax .nkini RiDOW., Ibis, Oct. 1886, 459. 



