184 TROCHILIDZ, HUMMINGBIRDS. —GEN. 119, 120, 121, 122. 
of duller colored species especially inhabiting the dense forests of the Amazon; 
the other is the 
Subfamily TROCHILIN 2. 
+ Xantus Hummingbird. Tarsi feathered; tail nearly even; first primary 
not attenuate ; frontal feathers ending abruptly at base of bill; g¢ above, and 
the throat, metallic grass-green ; below, cinnamon-rufous ; face blue-black ; 
a white stripe through the eye; wings purplish-dusky; tail purplish-chest- 
nut, the central feathers glossed with golden green; bill flesh-colored, black- 
tipped. 9 shining green above, including central tail feathers; below, and 
the face, pale rufous, whitening about the vent, and the sides greenish; : | 
head-stripes rufous, whitening on the auriculars; tail feathers, except the 
central, chestnut, with a dark terminal spot. 34; wing 24; tail 14; bill 2. 
| Cape St. Lucas. Amazilia xantusii and Heliopeedica castaneicauda Lawr., 
Ann. Lyc. N. Y. 1860, pp. 105, 109; Ext., pl. 22; Coor., 365. xanrTusit. + 
119. Genus HELIOPAIDICA Gould. | 
- 
; 
120. Genus LAMPORNIS Swainson. 
Black-throated Hummingbird. Tomia serrate near the end; bill depressed, 
not quite straight; no metallic scales on throat; ggolden-green above and 
on the sides; below, opaque black, with white flank-tufts; wings and tail 
dusky-purplish. 9 white below, with median black stripe. 44; wing 24; 
tail 13; bill nearly 1. Straggler to Florida. Bp., 130,922. . Mango? + 
121. Genus TROCHILUS Linneus. 
Ruby-throated Hummingbird. & with the tail forked, its feathers all 
narrow and pointed; no scales on crown; metallic gorget reflecting ruby- 
red, etec.; golden-green, below white, the sides green; wings and _ tail 
dusky-purplish. ¢ lacking the gorget; the throat white; the tail somewhat 
double-rounded, with black bars, and the outer feathers white-tipped. 34; 
wing 13; tail 14; bill 3. Eastern North America, abundant in summer, 
generally seen hovering about flowers, sometimes én flocks. Feeds on insects, 
and the sweets of flowers. Nest a beautiful structure, of downy substances, 
stuccoed with lichens outside; eggs two, white. Wus., ii, 26, pl. 10; 
Nort., i, 588; Avp., iv, 190, pl. 253; Bp., 181. . . . . COLUBRIS.— 
Black-chinned Hummingbird. Similar; tail merely emarginate; gorget 
opaque black, reflecting steel blue, etc., posteriorly. 9 with the tail simply 
rounded. California, Arizona and southward. Cass., Ill. 141, pl. 22; Bo., 
13332 COORT GODS. tne aera ton esc meas cree vo 8 eee ALEXANDRI. ; 
. 122. Genus SELASPHORUS Swainson. F 
* No metallic scales on crown; @ throat scales not much prolonged into a ruff; : 
outer primary attenuate; tail graduated, the middle feathers broader than the 
lateral. ; 
os 
