The African warthog, or haruja (P. aeliani), a native of Abyssinia and of the central regions of Africa, from the coast of Guinea to that of Mozambique, is nearly four feet long, with a naked slender tail of one foot, is scantily covered with long bristles of a light-brown color, and has a mane sometimes 10 inches long, extending from between the ears along the neck and back. Another species is found in the S. of Africa (P. aethiopicus), the valke vark of the Dutch colonists at the Cape of Good Hope. The incisors of the latter fall out at an early age, those of the former are persistent. A closely allied genus is Potamochoerus, of which there are several species, as the bosch vark of Cape Colony (P. africanus), which is nearly black, with whitish cheeks having a central black spot, and the painted pig of West Africa (P. penicillatus), which is reddish, with black face, forehead, and ears; another and less known species is P. edwardsi from Madagascar. The species of Potamochoerus frequent swampy grounds, and sometimes receive the name of water hog. They have longer ears than the true warthogs, tapering and ending in a pencil of hairs; the face is elongated, and has a protuberance on each side. The flesh of all the wart hogs and water hogs is in high esteem. They are hunted by dogs, which are often killed in the encounter with them. They are much addicted to fighting among themselves. This genus differs from Sus in that there are only four young in a litter, and that one molar tooth in each jaw has disappeared.
