16 RAPTORIAL BIRDS 
The genera among which the Buzzard-Eagles are 
distributed are the following—Harpyhaliaétus, Urubi- 
tornis, Urubitinga, Geranoaéttus, Hypomorphnus, Buteo- 
gallus, Flerpetotheres, Spilornis, Circaétus, and Helotar- 
sus. Of these ten genera, the seven first belong to 
the New, and the three last to the Old World. The 
first of the American genera ( Harpyhaliaétus ) consists 
of a single South American species, which is remark- 
able as being the only bird of prey known to feed on 
that unsavoury quadruped the South American Skunk ; 
the succeeding genus, Uruditornis, also consists of but 
one species, U. solitarius, a bird of very great rarity in 
collections, but which we fortunately possess both in 
adult and in immature plumage. 
Amongst the remaining American Buzzard-Eagles, 
there is one species which exceeds all the others in the 
beauty of its plumage, and also differs from them in the 
nature of its food, having a singularly vulturine predi 
lection for feeding on putrid carrion. ‘This bird is 
called, from a remarkable black band which crosses its 
breast, the single-banded Buzzard-Eagle ( Zypomorphnus 
unicinctus ),and has a wide geographical range extend- 
ing from Chili as far north as the southernmost states 
of the North American Union. One other South 
American species of this group* (Urubitinga schistacea) 
may also here be mentioned as of great rarity, and 
was first figured in the “ Transactions” of the Zoologi- 
cal Society from a specimen in the Norwich Museum. 
* It is, however, doubtful whether this species should not 
rather be placed amongst the Buzzards of the genus Leucopiernis. 
