BIRDS OF NORTH AND MIDDLE AMERICA. 317 
bb. Chin and upper throat streaked with dusky; lateral rectrices more narrowly 
edged with whitish (sometimes buffy on outermost ones). (Phethornis strii- 
gularis.) 
c. Throat and chest more grayish; sides and flanks paler; outermost rectrices 
margined terminally with pale buffy or whitish. (Colombia.) 
Pheethornis striigularis striigularis (p. 327). 
cc. Throat and chest more buffy; sides and flanks darker (nearly cinnamon- 
rufous); outermost rectrices margined terminally with light cinnamon- 
rufous or tawny ochraceous. (Western Ecuador.) 
Pheethornis striigularis atrimentalis (extralimital).¢ 
PHETHORNIS GUYI CORUSCUS Bangs. 
BANGS’ HERMIT. 
Similar to P. g. emiliz,’ of Colombia, but much brighter in colora- 
tion, the green of upper parts more bluish, passing into blue (instead 
of green or bluish green) on upper tail-coverts and base of tail, the 
fully adult males with under parts mostly metallic bluish green; 
tail averaging shorter. 
Adult male-—Above bright metallic bluish green, duller on pileum, 
passing into bright metallic blue or violet-blue on upper tail-coverts 
and basal portion of tail; longer upper tail-coverts with a subter- 
minal bar of blackish and a narrow terminal bar or margin of pale 
grayish buffy or dull buffy whitish; terminal half (approximately) 
of tail black, the contracted terminal portion of elongated middle 
rectrices pale grayish with whitish tips and shafts; remiges purplish 
dusky, the inner secondaries glossed with bluish green; under parts 
mostly bright metallic bluish green, this usually somewhat duller 
along median line and passing into, or inclining to, dull slate color 
on lower abdomen, the median portion of chin and throat, more or 
less distinctly, tawny; under tail-coverts metallic greenish blue, or 
dusky grayish glossed with greenish blue, centrally, broadly mar- 
gined with grayish white; indistinct femoral tufts grayish white; 
maxilla black, mandible pale (reddish or yellowish in life?), with 
terminal portion dusky; iris dark brown; feet brownish (in dried 
skins); length (skins), 131-153 (148); wing, 59.5-63.5 (61.5); tail, 
47-64.5 (42.6); culmen, 41-45 (42.6).¢ 
Adult female.—Upper parts as in adult male but upper tail-coverts 
more broadly tipped or terminally margined with pale grayish buffy, 
feathers of rump also very narrowly margined terminally with the 
same, and with narrowed portion of middle pair of rectrices much 
@ Phxthornis atrimentalis Lawrence, Ann. Lyc. Nat. Hist. N. Y., vi, 1858, 260 (bet. 
headwaters of Rio Napo and Quito, Ecuadér; coll. G. N. Lawrence).—[Phaethornis] 
striig(ularis] atrimentalis Simon, Cat. Troch., 1897, 7.—Phoethornis striigularis atri- 
mentalis Oberholser, Proc. U. S. Nat. Mus., xxiv, no. 1258, Jan. 18, 1902, 313 (Milli- 
galli, w. Ecuador; crit.). 
b See p. 316. 
¢ Twenty specimens. 
