This bird, whose attachment to Egypt was formerly so great that, according to Ælian, it suffered itself to die of hunger when it left the country, strange to say, now is scarcely ever seen there. The cause of this probably is, that the modern Egyptians, treading under foot the ancient faith of their fathers, kill and eat the Ibis as they would any other fowl, without remembering its former rank of divinity. Being deprived of the ancient protection which rendered Egypt so dear to it, the Ibis has almost deserted the ungrateful land of the Pharaohs. Still it occasionally pays brief visits to the Delta at the time of the rise of the Nile; but it soon takes flight into the wilds of Abyssinia, forgotten and unregretted. It is also found in Senegal and at the Cape of Good Hope. The Green Ibis (_I. falcinellus_), called by Herodotus the Black Ibis, has black plumage, variegated with green on the upper part. It inhabits the north of Africa and the south of Europe. Like the first-mentioned bird, it was held sacred by the Egyptians. The Scarlet Ibis (_I. ruber_) is indigenous to America, and is found principally in Guiana, where it associates in flocks at the mouths of the rivers. Its plumage is of a beautiful vermilion colour, tipped with black at the ends of the wings. It does not, however, wear this brilliant plumage till about two years old. The young are very readily tamed, and their flesh is tolerably well-tasted. CULTRIROSTRES. The _Cultrirostres_ (or knife-shaped bill) have a long, strong, and sharp-edged bill. They are generally provided with stout tarsi, and frequent the edges of marshes and banks of rivers. Many of them enjoy the faculty of being able to stand on one leg for hours together. This singular attitude is rendered possible by means of a curious mechanism, which was discovered by Duméril. The tibia, in its junction with the femur, presents a protuberant knot, which forcibly stiffens the ligaments of the knee, forming a kind of catch, similar to the spring of a knife. The principal species of this family are--the Spoonbill (_Platalea_), Stork (_Ciconia_), Jabiru (_Mycteria_, Linn.), Ombrette, Bec-ouvert, Drome, the Boatbills (_Cancroma_), Heron (_Ardea_), Crane (_Grus_), Agami and Caurale, and the Cariama (_Palamedea cristata_).