Bill shorter than the head, strong, slightly compressed, straight, the tip
curved. Upper mandible with the dorsal line nearly straight, toward the
tip curved, the ridge broad and convex with a slight central depression, the
sides convex, the edges sharp and inflected, the tip compressed, rather
rounded but sharp. Nasal groove long, narrow, curved; nostrils in its fore
part, medial, lateral, longitudinal, broad before, extremely narrow behind,
open and pervious. Lower mandible with the angle long and narrow, a
slight prominence at its extremity, beyond which the dorsal line is slightly
concave, the sides erect, and slightly convex, the edges sharp and inflected,
the tip obliquely truncate.
Head rather large. Neck of moderate length. Body rather full. Feet of moderate length, rather slender; tibia bare at its lower part, and rough all round with small convex scales; tarsus compressed behind, anteriorly cover- ed with decurved scutella, the sides reticulated, the hind part rough with small pointed scales; hind toe extremely small and elevated, the fore toes of moderate size, connected by reticulated webs, which have their margins con- vex; the third toe longest, the fourth nearly as long, all scutellate above. Claws strong, curved, very acute, compressed, that of third toe with a sharp inner edge.
The plumage in general is close, elastic, soft and blended; the feathers on the back and wings rather compact and distinct. Wings very long, rather broad, pointed; primary quills tapering and rounded, the first longest, the rest rapidly graduated; secondary rather short, rounded. Tail of moderate length, the feathers, which are twelve, are broad and rounded, the two middle an inch longer than the next.
Bill blackish-brown at the end, dingy-yellow towards the base. Iris brown. Tibia, toes, webs, and lower half of tarsus black, the upper half light blue; claws black. Upper part and sides of the head anteriorly brownish-black; upper part of neck all round yellowish-white; the rest of the neck white, barred with brownish-black, each feather having two transverse bands of that colour; breast white; sides, abdomen and lower tail-coverts white, barred with brownish-black, as are the upper tail-coverts. Back and wings brownish-black; primary quills of the same colour, white on the inner webs towards the base, as are the secondaries and tail-feathers, lower surface of wings mottled and barred with white and dusky.
Length to end of tail 20^ inches, to end of wings 20i, to end of claws 19g; extent of wings 48; wing from flexure 14; tail 6^; bill along the back 1 T V, along the edge of lower mandible 2^; tarsus 2 T y, middle toe l T j, its claw T 8 2. Weight 1^ lbs.
Female, from Br. T. M. Brewer. The mouth rather wide, 1 inch 2 twelfths across; the palate flat, with two longitudinal papillate ridges, the
