42 LANNER FALCON. 
are at once distinguished by the beautiful reddish tinge 
of the nape and upper part of the head. At this age 
the front of the forehead is whitish. The reddish 
brown feathers on the nape and upper part of the head 
have in the centre a longitudinal marking of blackish 
brown, larger on the middle feathers of the nape. The 
moustache is rather large but neatly defined. The 
feathers in the auditory region of a whitish tint 
strongly approaching to reddish yellow, have longitudinal 
dark markings, which nearly conceal the ground colour. 
Eyelids surrounded with black feathers, and a badly- 
marked streak of the same tint prolongs itself from 
the eyes beyond the region of the ears, where it 
disappears on the side of the nape. The colour of the 
ground of the other inferior parts of the bird is a 
blackish brown, like dark slate, with transverse markings 
of a bright bluish grey colour, which take the form of 
bands on the scapularies, greater coverts, secondaries, 
and rump, but disappear on the lesser wing coverts. 
The colour of these bands is bright upon the back 
and rump, but of a marbled brown on the other parts, 
growing of a redder brown towards the anterior ex- 
tremity of the wing. The primaries, with the exception 
of the light spots on the inner barbs, are blackish 
brown. The ground colour of the tail is paler than 
that of the wings, and broken by a dozen transverse 
bands of a dirty white colour, shaded with grey brown; 
the tip of the tail is whitish. The lesser wing coverts 
are marked by longitudinal dark spots, and inferiorly 
with orbicular whitish spots: upon the greater coverts 
these markings assume the form of transverse bands. 
The prevailing colour of the inferior parts is white, 
more or less strongly shaded with pale reddish yellow. 
The chin, throat, and sometimes the crop, are of a 
