Bill yellowish-grey at the base, mottled with brownish-black, in the rest of its extent pale greenish-blue, light on the margins; base of margin of lower mandible greenish-yellow. Iris bright carmine. Feet pale lake; claws brownish-black. Head yellowish-green; space around the eye and the gular sac orpiment orange; a band of black from the lower mandible to the occiput. Feathers of the neck white. Back and wings of a beautiful delicate rose colour; the lower parts of a deeper tint; the tuft of recurved feathers on the fore neck, a broad band across the wing along the cubitus, and the upper and lower tail-coverts, of a rich and pure carmine with silky lustre. The shafts of all the quills and scapulars are light carmine. On each side of the lower part of the neck and fore part of the body a patch of pale ochre. Tail feathers ochre-yellow, but at the base pale roseate, with the shafts carmine. Length to end of tail 30-3/4 inches, to end of wings 29-3/4, to end of claws 36; extent of wings 53; bill 7; breadth of gape 1-3/8, depth of pouch 2; breadth of bill at the base 1-5/8; at the end 2-1/12; bare part of tibia 3; tarsus 4; hind toe and claw 1-10/12; second toe and claw 2-8/12; middle toe and claw 3-7/12; outer toe and claw 3-1/12; wing from flexure 15-1/4; tail 4-3/4. Weight 4 lb. 2 oz. The female is smaller, but resembles the male. Length to end of tail 28 inches, to end of wings 28, to end of claws 35-3/4; extent of wings 48. Weight 3 lb. The affinities of this remarkable bird being variously represented by authors, it becomes a matter of considerable interest to determine its relations according to its internal organs. The skin is thin, but tough, and the subcutaneous cellular tissue is largely developed. In these respects its affinity is to the Ibises and Curlews, as much at least as to any other birds. On the roof of the mouth are two rows of blunt papillæ, as in many Scolopacidæ. The tongue is extremely small, being only 3 twelfths of an inch in length, but 7 twelfths in breadth at the base, where it is emarginate and furnished with numerous delicate papillæ, the outer much larger. The gular membrane is very dilatable and of the same general nature as that of the Cormorants and Pelicans, having a longitudinal series of muscular fibres along the centre, with two layers of fasciculi interposed between the external skin and the internal, the inner fasciculi running parallel to the lower mandible, the outer transversely. The bill is similar to that of the Pelican’s modified, the middle part or ridge being flattened, and the unguis abbreviated. The breadth of the mouth is within 1-1/12 inch. The external aperture of the ear is roundish, 4 twelfths in diameter, that of the meatus oblique, oblong, 3 twelfths across. The œsophagus, _a b_, is 17 inches long (including the proventriculus, as in all the other measurements); its diameter at the top 1-1/4 inch, at the distance of six inches, it contracts to 5 twelfths, then