concave margin; claws curved, compressed, acute, that of hind toe smallest,
of middle toe by much the largest, and having the inner edge thin and
dilated.
Plumage soft, close, blended, very short on the head; the feathers in general broad and rounded. Wings very long, narrow, and pointed; primary quills tapering, the first longest, the rest rapidly graduated; secondary short, broad, incurved, rounded, the inner more tapering. Tail long, very deeply forked, of twelve feathers, of which the outer are tapering, the middle short and rounded.
Bill brownish-black, deep orange at the base. Iris brown. Feet ver- milion; claws blackish-brown, yellow at the base. The upper part of the head and elongated occipital feathers greenish-black; the hind neck white, the rest of the upper parts pale bluish-grey, the tail lighter; the edges of the wings, the tips and inner edges of the quills, and the shafts white. The first primary is black on the outer web and part of the inner, the next two are similarly marked, but with the black shaded over with pale grey, the loose barbules being of that colour; the other primaries become gradually lighter. The lower parts are of a beautiful light roseate hue, which soon fades after death; the under surface of wings and tail white.
Length to end of tail 14|| inches, to end of wings 12, to end of claws 9-j%; extent of wings 30; wing from flexure 9j; tail to end of shortest feathers 4|-, to end of longest feathers 7^; bill along the ridge 1^-, along the edge of lower mandible 2 T ', tarsus |f; middle toe {§, its claw ff .
