TOPAZ-THROATED HUMMING-BIRD. 
14:3 
with metallic lustre, but which is somewhat diminished 
by a grey tint which pervades the whole ; the gorget 
is marked by brown feathers, which have a golden 
lustre when placed in the light, but is not very distinct • 
ly defined ; the vent is grey: the outer tail feathers 
are of a dull green, the next pair are of a brilliant 
violet, the others of a bright chestnut. 
These beautiful birds are found in Cayenne and 
Guiana. 
The figure of this bird is reduced one-half. 
