HALF-COLLARED DOVE. 
209 
for the examples of the different ages or sexes of 
one species. We believe, however, that they are 
truly distinct, at least the plumage of that we shall 
now describe shews every appearance of perfection, 
while from the length of the wings being only five 
and a half inches, instead of seven ( as in eryth.ro- 
phryi), it is presumed this difference is not sexual. 
The total length is about ten inches. The ground 
colour of the upper plumage is drab-brown, nearly 
of the same tint as the last ; but the top of the head 
and nape, instead of being delicate French grey, is 
of the same vinaceous as the under parts, the front, 
as is usual in this family, being much paler ; behind 
the nape is a semicircular black collar like the last. 
The wing-covers are very light cinereous with 
whitish edges, but this tint blends on the scapulars 
into the drab-brown of the back. The under plu- 
mage is vinaceous, palest on the chin and changing 
into a cream-coloured white on the belly, vent, 
thighs, and under tail-covers ; these parts being of a 
full cinereous in the last species ; the basal half of 
the four outer pair of feathers is deep black ; the 
other portion is more or less white according to their 
distance from the two central pair, which are drab- 
brown, tinged with cinereous. On their under sur- 
face, the terminal half of these feathers is much 
whiter and the base much blacker. The inner wing- 
covers, the flanks, and sides of the tail-covers, are 
cinereous. The bill is black and the feet pale. The 
orhits seem to be more feathered than in the last, 
and there is no red tinge on the naked skin ; this. 
