EVEN- TAILED AMETHYSTINE HUMMING-BIRD. 87 
of tlie neck in a crescent form, and this is again bor- 
dered with a band of deep brown, assuming a green- 
ish tinge as it comes upon the back. The danks and 
lower tail-coverts are deep cinnamon-red, and the 
centre of the belly is pure white, exhibiting a very 
marked contrast. The tail, in the form of which it 
difiers so much from the other two, is ample, and 
perfectly square: the feathers are of a golden-green 
above, black at the ends, except the two on the out- 
side, which are tipped with white. 
In a young specimen figured by M. Lesson, the 
bright patch on the throat is nearly pure white, ha- 
ving the centre of the feathers slightly mai'ked with 
a greenish tinge. It differs also in the centre of the 
belly, and under tail-coverts, being pure white, in- 
stead of the rich cinnamon of the adults. 
M. Lesson has also figured the beautiful nest of 
this species : it is compactly built upon the sprig of 
a passion-flower, and is composed of cotton, fortified 
on the outside by lichens, and by slender roots. 
This species is a native of Cayenne. — Tlie next 
we shall mention has been found in the mountainous 
provinces of Brazil : it is the 
