AVES—EAGLE. 451 
American animals, as well as for the most authentic details with respect to 
their native habits. In the present instance he has unfortunately given ug 
no such particulars ; and as no other zoologist has seen the living bird in a 
state of nature, we can but judge from analogy that its manners are the same 
with those of the best known species of its genus. A figure taken froma 
preserved specimen, has been lately published by M. Temminck, in his 
splendid Planches Coloriées; and the description which accompanies it, is 
the only original notice of the bird subsequent to that of M. D’Azara. 

The latter author, or rather his French translator, names it V’aigle 
noiratre et blanc. He states, that it is found, but not frequently, in Para- 
guay, and that it is generally seen in pairs. The feathers of the head, neck, 
and upper part of the body, are, according to his description, of a blackish 
blue, and, with the exception of those of the back, terminated by dirty white. 
The tail is blackish, with small whitish spots scattered over its surface , the 
upper wing-coverts ash colored, with blackish stems and transverse lines of 
the same ; and the large coverts, as wi \i as the quill-feathers, of a deeper 
ash, variegated with narrow black bands. The whole under surface is 
beautifully white, with transverse blackish lines on the under tail-coverts, 
and larger wing-coverts alone; the smaller wing-coverts having no other 
part but their stems of this sombre tinge. The naked part of the leg is of a 
light yellow, with large flat scales both before and behind; the cere is pale 
yellow ; the beak black at its point, and blue at the base; and the iris of a 
very light hazel. ’ 
