. Genera of Humming Birds. 347 



469. Alcidius leucopleurus, Gould, P.Z.S., 1847, p. 10. 



Oreotrochilus leucopleurus, Gould, Mon. Troch., vol. ii.,. 

 p. 71. 



White-Sided Hill Star, Gould, Mon. Troch., vol. ii., p. 71.. 



rOrotrochile à flancs blancs, Muls., Hist. Nat. Ois. Mou.,. 

 1876, t. ii., p. 172. 



Habitat. — Chili. 



Male. — Upperside olive-brown with a bronze tinge in 

 some specimens and a coppery tinge in others. Uppertail- 

 coverts in some bronzy-green, in others coppery-bronze. 

 Median rectrices dark green-bronze in some specimens, in 

 others brownish-black with greenish reflections, laterals white 

 with a slight margin on outer web and dark brown tips, 

 outermost one white at base passing to purplish-black. 

 Throat brilliant golden-green, beneath which is a narrow 

 band of metallic bluish-black feathers. Breast, upper part of 

 abdomen and flanks pure white. Centre and lower part of 

 abdomen bluish-black. Undertail-coverts olive-green. Wings 

 purplish-brown. Bill black. 



Total length, 4fin. Wing, 2^. Tail, 2J. Culmen, |-. 



Female. — • Like the male, but buffy- white underneath 

 sparingly glossed with pale olive-green on sides of breast. 

 Throat white minutely spotten with greenish-blue. Lateral 

 and outermost rectrices white, crossed with a subterminal 

 green band, and with white tips. 



Total length, 4fin. Wing, 2\. Tail, 2J. Culmen, -1. 



My specimens of both sexes of this species were collected 

 in Chili, by Mr. E. Reed. It wasfirst discovered in the Andes 

 of Aeon. 



^470. Alcidius melanogaster, Gould, P.Z.S., 1847, P- lo- 



Oreotrochilus melanogaster, Gould, Mon. Troch., vol. ii.,. 

 p. 72. 



Black-breasted Hill Star, Gould, Mon. Troch, vol. ii.,. 

 p. 72. 



r Orotrochile à ventre noir, Muls., Hist. Nat. Ois. Mou.,. 

 1876, t. ii, p. 176. 



Habitat. — Peru. 

 C2 



