middle, or along the extent of a long, narrow, rounded dorsal prominence,
which extends from the base to the first groove, afterwards curved in the
fourth of a circle, the ridge narrow, in its basal half rounded, narrower and
rather sharp towards the end, the sides slightly convex, and marked with
four curved transverse grooves, between the nostril and the tip, the edges
rather blunt, nearly straight until close to the decurved, narrow, obtuse tip.
The basal rim is scrobiculate, the rest of the mandible smooth. The nostrils
are linear, direct, close to the edge, and near the base. Lower mandible with
the angle extremely short and narrow, the dorsal line nearly straight and
ascending, the sides slightly concave, without grooves, the ridge narrow but
convex, the tip very narrow, obliquely truncate. The gap extends down-
wards a little beyond the base of the bill, and is furnished with a soft corru-
gated extensible membrane.
Head large, oblong, anteriorly compressed; eye of moderate size, with the edges of the eyelids bare; neck short and thick; body full and rounded. Feet short, rather stout; tibia bare for a short space above the joint; tarsus very short, anteriorly with a series of small scutella, the rest with small roundish scales. Hind toe wanting; toes of moderate length, rather slender, scutellate above, connected by reticulated entire membranes, the third toe longest, the fourth little shorter, the second considerably shorter, with a narrow marginal web. Claws strong, of moderate length, compressed, arch- ed, that of the inner toe much curved, of the middle toe with a thin inner edge.
Plumage close, blended, soft, very short on the head, where, however, along a line over and behind the eye, there is on each side a tuft of long, very slender, acute incurved feathers, of a shining hair-like texture. Wings rather short, curved, narrow, acute; primary quills narrow, incurved, first longest, second slightly shorter, the rest rapidly graduated; secondaries very short, small and rounded. Tail very short, slightly rounded, of sixteen nar- row, rounded, decurved feathers.
Bill light yellowish-red, the basal rim and the ridge towards the end of the upper mandible bright red, as is the edge of the eyelids. Iris light blue. Feet bright red; webs of a deeper tint; claws black. Sides of the head white; upper part brownish-black; the elongated feathers behind the eye pale yellow. The general colour of the upper parts is brownish-black, gloss- ed with blue, of the lower deep purplish-brown.
Length to end of tail 15 inches, to end of wings 14, to end of claws 14; extent of wings 22^; wing from flexure 8 T %; tail 2i; bill along the ridge 2f, along the edge of lower mandible 1|£; tarsus 1 T 5 2; middle toe l|f, its claw
