176 TYRANNIDH, FLYCATCHERS.—GEN. 109, 110. 
common. Aub., vii, 341, pl. 490; Bp., 198. Var. pirricitis Bp., 198 
(in text), Coor., 328, is the paler western form. . . . FLAVIVENTRIS. 
Hlammond’s Flycatcher. Above, olive-gray, decidedly grayer or even 
ashy on the fore parts, the whole throat and breast almost continuously olive- 
gray but little paler than the back, the belly alone more or less decidedly 
yellowish ; wing-markings and eye-ring dull soiled whitish ; bill very small, 
and extremely narrow, being hardly or not 4 wide at the nostrils; this distin- 
guishes the bird from all but minimus and obscurus; under mandible usually 
| blackish ; tail usually decidedly forked, more so than in other species, though 
5 in all of them it varies from slightly rounded to slightly emarginate ; outer 
tail feather usually whitish-edged externally (a character often shown by 
traillii and minimus), but not decidedly white. About the size of traillii, 
but not so stoutly built ; wings and tail relatively longer; feet as in minimus. 
Western United States. Bp., 199; Coopr., 330. . . . . HAMMONDII. 
Wright's Flycatcher. Colors not tangibly different from those of ¢raillit 
or minimus, but outer web of outer tail feather abruptly white in decided 
contrast. General dimensions approaching those of acadicus, owing to length 
of wings and tail; wing 23 to nearly 3; tail 25-22; tarsi about 3; bill 
about $, extremely narrow (much as in Sayornis fuscus), its width at the 
nostrils only about $ its length. Southwestern U. S. Bp., 200, 922; 
COOPs OOo. (Ae SF are a es a ce, a eee Pan aoe ee OR SONS 
Ozs. The foregoing account, carefully prepared after examination of a great 
amount of material from all parts of the country, will probably suflice to determine 
ninety out of a hundred specimens; but I confess it does not entirely satisfy me, 
and, as it does not fully answer all the requirements of the case, it must be regarded 
as provisional. At the same time I must say, that the only alternative seems to 
be, to consider all the foregoing (excepting acadicus and jflaviventris, perhaps) as 
varieties of one species; but for this I am not prepared. 
110. Genus MITREPHORUS Sclater. 
Buff-breasted Flycatcher. Coronal feathers and rictal bristles longer than 
in Hmpidonax, and general cast of the plumage buffy. Above, dull grayish- 
brown tinged with olive, particularly on the back; below, pale fulvous, 
strongest across the breast, whitening on the belly ; no fulvous on the fore- 
head ; sides of head light brownish-olive; wings and tail dusky, outer web 
of outer tail feathers, edges of inner primaries except at the base, and tips 
of wing coverts, whitish ; iris brown; bill yellow below, black above; feet 
i black ; 43 long; extent 74; wing 24; tail 2; tarsus .55; middle toe and 
claw .45; bill .40. Fort Whipple, Arizona. Lmpidonax pygmceus Cours, 
y Ibis, 1865, 537; MZ. pallescens Cours, Proc. Phila, Acad. 1866, 63; Coopr., 
334; Exxuror, pl. 19. My original specimens, affording the descriptions 
‘ quoted, and the first known to have been taken in the United States, do not 
; appear to be specifically distinct from fulvifrons of Grraup ( B. of Tex. 
pl. 2, f. 2), which may itself be the same as a Mexican species of 
prior mame... 9. «9 & Ge! &) e294) IRGRVEERONS) var. PALGESOENS: 
