Size comparatively large; height at withers about 36 inches. General colour greyish fawn, very finely grizzled with brown. Head and neck clearer fawn. Face-markings generally absent, but a brown patch on the muzzle in some specimens, and on the crown between the ears in others; chin white. Backs of ears pale fawn, not black-tipped; a whitish patch at the base of the ears surrounding the auricular gland, which in young specimens is covered with short velvety-white hairs, and in old animals is entirely naked. Belly white. Fore legs generally black in front, from the knee downwards, fawn externally and white internally; hind legs also commonly marked with black on the lower part of the cannon-bone, otherwise fawn, but on both fore and hind limbs the dark markings are sometimes absent. Tail thick, bushy, reaching halfway to the hocks; fawn above and all round the base, white below and at the tip. Horns evenly divergent, curved backwards and upwards; never strongly hooked at their tips. At their bases the growing pad, which in other species is absorbed at maturity, remains persistent throughout life as a soft rounded swelling. In length the horns of the adults attain from 14 to 16 inches. Skull-measurements of an adult male:--basal length 10·3 inches, greatest breadth 4·7, muzzle to orbit 6·3. _Female_ like the male, but without horns. _Hab._ South Africa, as far north as Angola on the west, and Mozambique on the east. (Whether _C. bohor_ is only a smaller northern form of _C. arundinum_ is as yet uncertain.) The Reedbucks, although closely allied to the Waterbucks and hardly to be distinguished from them in osteological characters, as has been shown by Turner[11], are easily recognized externally by the forward turn of their horns and by the naked glandular spot which is always present to a greater or less extent on the sides of the head beneath the ears. Of the five species of Reedbuck which we treat of in the present work, three were known to the writers of the last century; but they have been much confused together, even by some of the more recent authorities, and it is a difficult task to unravel their complicated synonymy.