66 
tinged with olive green; above dull olivaceous, not tinged 
with brown; lower mandible*pale: 222. 4...4)- 2 eee (13) 
12. Under parts dull whitish, somewhat tinged with yellow on 
belly but never on throat......... eR .(14) 
13.. Under wing-coverts pale yellowish! wing- aeade Syelionaials whites 
coloration purer and brighter, above more greenish olive, belay 
purer yellow, the breast shaded with olive; tail longer, gener - 
ally over 24 inches. ...... a .Yellow-bellied Flycatcher. 
13. Under wing-coverts pale nee deeper on neaue of wing, wing-bands 
buffy gray; coloration duller and more clouded, above more gray- 
ish olive, below pale dull yellow faintly clouded with dull grayish 
brown on the breast; tail shorter, generally under 24 inches... . 
oI at a snes a ate. eae ret alts iy ty Seca ts hate? Western Flycatcher. 
14. Bill moderately wide, at nostrils over 4 the length.......... (15) 
14. Bill very narrow, at nostrils less than 4 as wide aslong....... (18) 
15. Above uniform olive greenish not tinged with brown; wing-bars and 
eye-ring tawny; below white with breast grayish, and together 
with sides, washed with sulphur yellow; lower mandible whitish 
BM te eRe cc Rete ea an tae . Acadian Flycatcher. 
15. Above olivaceous tinged with brown; wing-bars and eye-ring buffy 
whitish; below white, breast grayish, and, together with sides, 
very slightly yellowish; lower mandible darker................(16) 
16. Smaller, wing 22 or less long; tail slightly forked; upper 
parts more grayish, rather ashy; wing-bars broader, dull 
white; eye-ring ae white; under mandible dusky. . 
bee a ot SNE, cea oS east Wlycarehee 
16. Larger, wing over 22, up to 2 eons: baile even or rounded; 
upper parts more brownish; wing-bars narrower, tinged with 
gray or buffy; eye-ring buffy white; under mandible paler. . (17) 
17. Above duller, more fuscous, breast more ashy and lower parts less 
yellowish; wing-bars duller, less conspicuous, more grayish white; 
bill longer and very slightly narrower, tarsus longer. Traill Flycatcher. 
17. Above clearer, more olivaceous, lower parts more yellowish; wing- 
bars more olivaceous white; bill and tarsi shorter. ..Alder Flycatcher. 
18. Outer web of outer tail feather not paler than inner; more 
olivaceous, throat grayish, eye-ring and wing-bars soiled 
whitish, below more yellowish; lower mandible brown 
. Hammond Flycatcher. 
18. Oater eh if wis “il Feonee neatly roaler than inner, dull 
whitish; duller and grayer, throat, eye-ring and wing-bars 
whitish, lower parts hardly yellowish; lower mandible 
brown at tipoonly... 0... 2.5 520 ean oe aoe Wight Bivcatener 
443. Muscivora forficata (Gmelin) —Scissor-TaAILED FLYCATCHER. 
Accidental. The only known instance of the occurrence of this 
bird in Nebraska is a single specimen seen south of Lincoln in the fall 
of 1872 by Bruner. There is no doubt as to the correct identification 
