BIRDS OF NORTH AND MIDDLE AMERICA. 509 
(on both webs) with dusky; remiges dusky, faintly glossed with 
violet; a conspicuous postocular streak of white passing obliquely 
backward and downward along upper margin of auricular region; 
auricular region and sides of neck deep green, like upper parts; 
under parts mostly metallic grass-green, but this much broken by 
white or grayish white margins to the feathers and by a white sub- 
terminal bar to feathers of throat; femoral and lumbar tufts, anal 
region, and extreme lower abdomen (medially) white; under tail- 
coverts white with a central area of gray; bill black; iris dark brown; 
feet brownish (in dried skins); length (skins), 104-113 (108); wing, 
62.5-67.5 (65.2); tail, 38.5-42 (39.8); culmen, 20-22 (21.1). 
Adult female —Above as in adult male, but outermost rectrix white 
or grayish white (without gray margin), the inner web with a sub- 
terminal bar (more or less distinct) of dusky gray, the second rectrix 
with a similar bar across both webs; chin and throat buff, or white 
tinged with buff; rest of under parts mainly grayish white, the sides 
of breast mostly metallic green; length (skins), 99-102 (101); wing, 
56.5-60 (58.4); tail, 34-37.5 (35.7); culmen, 22.° 
Highlands of northern Nicaragua (Matagalpa; San Rafaél del 
Norte; Ocotal). 
Delatiria sybille Savin and Gopman, Ibis, April, 1892, 327 (Matagalpa, Nicara- 
gua; coll. Salvin and Godman); Biol. Centr.-Am., Aves, ii, 1892, 337, pl. 
54A, figs. 3, 4 (Matagalpa and San Rafaé] del Norte, Nicaragua).—Sa.vin, 
Cat. Birds Brit. Mus., xvi, 1892, 664. 
Delatiria sybille Boucarp, Gen. Hum. Birds, 1895, 220 (Matagalpa). 
[Coeligena] sybiliae Stmon, Cat. Troch., 1897, 25. 
C[oeligena] sybillae HartTerT, Das Tierreich, Troch., 1900, 115 (monogr.). 
[Ceeligena] sybille SHarrs, Hand-list, ii, 1900, 123. 
OREOPYRA VIRIDIPALLENS (Bourcier and Mulsant). 
GREEN-THROATED MOUNTAIN GEM. 
Adult male——Forehead and crown metallic grass green, changing 
to brilliant, more emerald, green in position a, the occiput and hind- 
neck more bronzy green; back, scapulars, and wing-coverts bronze- 
green or greenish bronze, passing into bronze or coppery bronze on 
rump; upper tail-coverts dull blackish, faintly glossed with bluish or 
bronzy purplish; four middle rectrices dusky slate or slate-blackish, 
faintly glossed with bluish, the rest of tail similar but paler and 
grayer (especially the outermost pair), indistinctly darker terminally 
and along edge; remiges purplish dusky; a conspicuous postocular 
streak of white, extending obliquely backward and downward, and 
below this an auricular area of dusky metallic bronze-green (more 
brilliant in position a), continued beneath eye to loral region; malar 
region, chin, throat, chest, median portion of breast, and abdomen 
« Light specimens. b Five specimens. 
