16 
at edge of cere, ‘98 to 1-1; width at gape, 18 to 2. Length 
of cere, 1:13 to 1:2; Length of Gonys, 1°25. Weight, 18 to 
20 Ibs. 
The legs and feet are a dingy greenish grey or white. The 
claws, pale brown. ‘The biil very pale horny green ; dusky just 
at tip. Cere, rather pale brown. Skin of cheeks and chin pale 
brownish grey, or dove colour, with a pure blue tinge round the 
lower half of the eye. The closed wings fall short of the end of 
the tail, by from 3°5 to 5 inches. The lower tail coverts fall 
short of ditto by about 2°8 to 4:0 inches. 
The 4th primary is the longest. The first falls short of it by 
from 4 to 5 inches, and the 2nd by from 1 to 2 inches. The 
shortest tail feathers, (the external ones) fall short of the longest, 
(the central ones) by from 1°5 to 3 inches. The adult bird has 
the whole head, cheeks, chin and throat rather closely covered 
with yellowish white hair-like feathers. The nape, and upper 
two-thirds of the back, and sides, of the neck, are somewhat 
thickly covered with yellowish white down. The basal one- 
third of the back and sides of the neck were bare in all the speci- 
mens I have examined, and the front of the neck sparsely stud- 
ded with star-like tufts of down. The large crop patch, some 
8 inches long by 6 in breadth, is densely clothed with small close- 
sitting pale wood brown feathers. At the base of the back of 
the neck, rising in all the instances I have seen out of the 
bare skin, is a ruff of linear lanceolate feathers, about 3 inches 
in length with very loose, separated, filamentous webs, of 
dingy buffy white. Upper back, shorter scapulars and wing 
coverts, (except the larger row), a nearly unichromous pale 
brown, or whitey brown, many of the feathers inconspicuously 
paler centred. Mid back pure white, but some of the feathers 
with a fawn-coloured tinge. Rump and upper tail coverts, 
more or less fulvous, buffy, or fawny white, (the hue seems to 
vary in different individuals) some of the longer feathers, much 
tinged towards the tips, with brownish fawn colour. Longer 
scapulars and largest wing coverts, deep umber brown, tipped 
(in the scapulars broadly) with fulvous fawn, and more or less 
centred towards the tips with the same colour. Quills and tail 
feathers (the secondaries a shade less deep) deep umber brown ; 
freshly moulted ones having a purplish gloss, and being per- 
haps best described as of a deep chocolate brown. The whole 
of the lower parts, including wing lining, and lower tail coverts, 
a very pale dingy brown, or fulvous white, some of the feathers 
especially on the sides, with ill-defined, moderately broad, some- 
what paler centres, passing imperceptibly into the tint of the 
rest of the web. 
