A glance over the collection of birds belonging to the royal cabinet, has enabled us to distinguish a species, which is neither named nor described in the works of systematic writers, excepting perhaps by Dr Latham; and which, when carefully examined, will be found to correspond with all that the ancients, the monuments and mummies, indicate as characteristic of the ibis. We here present a figure of it, Plate V. It is a bird somewhat larger than the curlew; its beak is arcuate like that of the curlew, but a little shorter, and sensibly thicker in proportion, somewhat compressed at its base, and marked on each side with a groove, which, proceeding from the nostril, is continued to the extremity; while, in the curlew, there is a similar groove, which disappears before arriving at the middle of the beak; the colour of the beak is more or less black; the head, and the two upper thirds of the neck, are entirely destitute of feathers, and the skin of these parts is black. The plumage of the body, wings, and tail, is white, with the exception of the ends of the large quills of the wing, which are black; the four last secondary quills have the barbs singularly long, attenuated, and hanging down over the ends of the wings, when the latter are folded; their colour is a beautiful black, with violet reflections. The feet are black, the legs are thicker, and the toes much longer in proportion than those of the curlew; the membranes between the bases of the toes are also more extended; the leg is entirely covered with small polygonal, or what is called reticulated scales, and the base of the toes itself has only similar scales; while, in the curlew, two-thirds of the leg, and the whole length of the toes, are scutulate, that is to say, furnished with transverse scales. There is a reddish tint under the wing, toward the top of the thigh, and on the anterior large wing coverts; but this tint appears to be an individual character, or the result of an accident, for it does not occur in other individuals that are in other respects entirely similar.