audebert's humming-bird. 
113 
The young of the first year have the liead brown, 
the under parts of a clear grey, covered with a collar 
of golden green upon the higher part of the breast. 
This species inhabits Brazil. 
AUDEBERT’S HUMMING-BIRD. 
Trochilus cmruleus ^Audebert. 
Trochilus caraleua, Audeberi, Oiseaux dories, pi. 40 L'Oi- 
Beau-mouche Audebert, Lesson, Histoire Naturelle des 
Oiseaux-mouches, 164. pi. li. 
This species, to which Lesson has applied the 
title of Audebertii, though described by that natu- 
ralist under another name, is closely allied to T. bi- 
color, and is introduced by Bufibn as a variety of it. 
The upper parts are of a dull green, the lower parts, 
except the throat and vent, bright emerald green ; 
the throat is a rich sapphirine blue, and the vent and 
under tail -coverts are white. The form of the tail 
differs from that of the T, bicolor, being completely 
rounded at the tip ; above and below it is of a deep 
and dull blue. It is a native" of Guiana. 
There are yet two birds to be introduced here, 
which, as far as we can judge without an examina- 
tion of specimens, are much allied to those just de- 
scribed, and of which Plate xvi. will give some idea 
of the form. They both appear to have been unfi- 
gured before the beautiful work of Lesson gave us 
u 
VOL. vit. 
