101 
Wing 3 360-380, 2 390-410 mm.; above 
blackish-slate, most of feathers tipped or 
barred with white ; head, neck and under- 
parts white ; basal half of tail black, ter- 
minal white. 
169. Leucopternis lacernulata (Temm.), Pl. Col. S.E. Brazil. 
1, pl. 437 (1827). [Brazil] 
White-headed Hawk. 
Wing ¢ 295, 9 315 mm. ; above more slate 
coloured, with less white variegation: 
head and hind neck shaded with greyish ; 
tail with narrow sub-terminal black band 
on white apical half. 
170. Leucopternis kuhli Bp., Consp. Av. 1, p. 19, Amazonia, from 
1849. [No loc.: Para, apud Chubb.] Para to 
White-browed Hawk. E. Peru. 
Wing ¢ 212, 9 220 mm.; smaller; above 
slate-black ; above eye a white stripe, and 
nape streaked and margined with same ; 
tail black, tipped with ashy-brown, with 
a median band of white; below white 
narrowly streaked with black on sides 
of chest. 
*171. Leucopternis melanops (Lath.), Ind.Orn.1., Guiana ; 
p. 37 (1790). [Cayenne.] N. Brazil to 
Black-faced Hawk. FE. Ecuador. 
Wing 3 210, 2 230 mm.; head, neck and 
lower parts white ; lores and stripe behind 
eye black ; crown and nape streaked with 
black ; back and wings black with large 
spots of white, except on quills ; tail black 
with broad band of white about a third 
from end. 
