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VIEILLOT’S HUMMING-BIRD. 
Trochilus chalybeus . — Vieillot. 
Plate XVIII. 
Trochilus chalyhcus, Vieillot; Temminck , Planches Coloriees , 
lx. fig. 2. — Oiscau-raouche Vieillot, Onusmya Vieillotii, Les- 
son, Histoire Naturelle des Oiseaux-monches, pi. lxiv. p. 1 86. 
This elegant humming-bird was first described by 
M. Vieillot in 1823 ; Temminck gave a very good 
representation of it in his PI. Coloriees, and it has 
recently been figured in the splendid publication of 
M. Lesson, who has dedicated it to Vieillot, an 
eminent and laborious ornithologist. We have pre- 
ferred retaining the name given by its discoverer. 
It is about three inches in length, and of a light 
and graceful form ; the sides of the neck are adorned 
with two bundles of green lengthened fan-shaped 
feathers, having a round white spot at the extremity 
of each. The forehead and cheeks are brilliant green, 
and a line of black runs from the bill to the occiput ; 
the back and upper parts of the body are green, with 
yellowish reflections ; the sides and forepart of the 
