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SWAINSON S HUMMING-BIRD. 
a knowledge of them. The first that naturalist has 
described under the title of 
SWAINSON’S HUjVEVriNG.BIRD. 
Trochilus Swainsonii — Lesson. 
Le Swainson, Lesson, Histoire Naturelle des Oisseaux- 
mouches, pi. 70. 
Before describing this bird, we may remark that 
Lesson has also applied the name of this distinguished 
British ornithologist to another Humming-Bird, and 
the only reason that we can see for retaining it to 
both is, that the other, represented on our thirtieth 
Plate, will belong to a separate group of this large fa- 
mily, that of which T. kirsutus forms the type, and 
which has been characterised by Swainson under 
the name of Pcethornus, and by Boie under that of 
Glaucis. 
It is rather a large species, being above four inches 
in length ; the upper parts are of a uniform golden 
gi’een tint, while the throat and fore part of the neck 
are clothed with feathers of the most brilliant emerald 
green, and which shade into a duller tint upon the 
flanks ; on the middle of the breast there is a patch 
of velvety black ; the vent plumes are whitish. The 
tail is deeply forked, and of a dull indigo blue. 
This species is described by Lesson from a single 
specimen in the Parisian gallery. It was received 
from Brazil. The other bird we alluded to may be 
termed the 
