Ostriches were well known to the ancients, who used the plumes for ornament, as we do; these were considered emblems of justice from the equality of the two webs, or were worn in token of victory, as is still done in some parts of Africa. The words of Aristotle–who was followed by Pliny in the statement that the Ostrich was part quadruped, part bird–combine with those of Xenophon to bear witness to this knowledge, while monuments, inscriptions, and even the Bible tell the same tale. In the Sahara and elsewhere these birds are hunted with horses and camels, {30}being stalked or ridden down by means of fresh relays of beasts; the Namaquas draw a cordon round them; the Bushman, concealed in sand or disguised in skins, shoots them with poisoned arrows; while the lasso, pitfall, or other device are used in particular districts. Space will not permit a detailed account of the Ostrich farms of modern Africa, so well described in Messrs. de Mosenthal and Harting's _Ostriches and Ostrich-Farming_, and other books; but it may be mentioned that the tribes of the north of that continent have long been in the habit of domesticating the bird, that the value of the sales in South Africa is not far from a million pounds yearly, and that the plumes are plucked or, preferably, cut about twice a year, the adults yielding the finest feathers. The flesh is coarse, and of little use for food. II. RHEAE. Fam. RHEIDAE.–The Rheas, or Nandus, have the head, neck, and bill much like those of Ostriches, the maxilla being somewhat more rounded and terminating in a nail-like process; the metatarsus is also similar and equally stout in proportion, but the toes are three in number in place of two, the mid-phalanges being shortened and the terminal furnished with decided claws. In _Rhea darwini_ alone the metatarsi are mainly reticulated instead of scutellated anteriorly, and have the upper portion feathered. The bones of the wing are comparatively well developed, the feathers being slender but not ornamental, while there is no apparent tail. The furcula is wanting, as is the aftershaft to the feathers, but the syrinx is tracheo-bronchial with one pair of syringeal muscles, a condition absolutely unique among the Ratitae. The head and neck are feathered, only the lores, orbits, and ear-openings being naked, and of these the latter are surrounded by bristles.