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guy’s humming-bird. 
the tips, for very nearly the half, white. It is a na- 
tive of Brazil. 
The three preceding Plates will give an idea of 
the form of the birds composing this group, and of 
the resemblance of the females to those which M. 
Lesson separates. We shall give the description 
of the others which are known, some of which are 
very diminutive. The first we shall mention is 
GUY’S HUMMING-BIRD. 
Trochilus Guy Lesson. 
Le Guy Trochilus Guy, Lesson, Trochilidees, PI. xliv. 
This species approaches nearer than the others to 
the Supercilious Humming-Bird, and seems even to 
have been confounded with it. It is considerably 
less, however, and the projecting feathers of the tail 
over-stretch it for a much less distance ; it is of the 
same form with that of its near ally, above golden 
green at the base, then black, the lateral feathers 
fringed with white at their tips ; the projecting nar- 
row paits of the centre plumes also white. The bill is 
of considerable length, the under mandible bright 
orange red, brownish at the tip ; the upper parts of 
the body are brilliant metallic green, the feathers on 
the crown bordered with reddish ; the auriculars are 
black, surrounded, above by a streak of tawny yellow, 
and underneath by a line of the same colour ; the 
