The Burmese, or Eld Deer, (_Cervus eldi_), also known as the Brow-Antler Deer, is one of the rarest species to be seen in captivity. Living specimens are acquired only through special expeditions to northern Burma. Its most characteristic feature is the antlers of the male, which sends forward a very long and almost straight brow tine, while the main beam sweeps backward in the opposite direction, and describes a full semicircle. The antlers are both very heavy and long for the size of the animal. The specimens shown here, which are breeding satisfactorily, are the gift of Mr. William Rockefeller. The Barasingha Deer, (_Cervus duvauceli_), also called the Swamp Deer, is to India what the mule deer is to North America. To my mind, the antlers of the former always suggests the latter species, and in size the two species are much alike. In summer the coat of the Barasingha is of a beautiful golden-yellow color, conspicuous from afar, and the antlers of old males reach a length of from 35 to 41 inches, with three bifurcations on each beam. The antlers sometimes are shed and renewed twice in twelve months. With us this species breeds very regularly, and the offspring mature well. The Altai Wapiti, (_Cervus canadensis asiaticus_), is, in all probability, the parent stock of our American elk, but it happens to be a fact that our species was the first to be discovered by systematic zoologists, and described. To all visitors who are interested in deer, the Altai Wapiti—and also the Tashkent Wapiti—are a constant source of wonder, because of their well-nigh perfect similarity in all points to our own wapiti, or American elk. Our Asiatic wapiti are exhibited in ranges connecting with the western rooms of the Asiatic Deer House, where they have bred twice, and produced two fine fawns. In the rutting season the males are very cross and dangerous. They are hardy, and require no heat in winter. The Indian Sambar, (_Cervus unicolor_), always suggests a tropical understudy of the Altai wapiti, clad with thin, coarse, bristly hair, and with shorter and smaller antlers, and a bristly mane all over the neck. Each antler possesses three points, only. Of all the Old World _Cervidae_, this species most nearly approaches the size of the Altai and Tashkent wapiti. It inhabits the hill forests of India, and in Burma, Siam and farther south it is replaced by the next species. The Malay Sambar, (_Cervus equinus_), also called—most inappropriately—the “Horse-Tailed Deer,” very strongly resembles the preceding species, except that the bristly mane of the former is generally absent. The antlers of this species are shorter, also, but very thick in proportion to their length. The Malay Sambar is confined to the Malay Peninsula and the countries immediately above, and Borneo and Sumatra.