Skull as described above. The dimensions of a skull of a male are:--Basal length 8·3 inches, greatest breadth 4·0, muzzle to orbit 4·9. _Hab._ India, from the base of the Himalayas to Cape Comorin, and from the Punjab to Lower Assam; but not found in Ceylon or to the east of the Bay of Bengal. The Indian Antelope or Black-buck, as the male is universally called by sportsmen, is usually associated with the Gazelles, and we retain it in this position, although it deviates from all the other members of the subfamily in having its horns spirally twisted somewhat after the manner of the _Tragelaphinæ_. It likewise differs from the rest of the group as regards the strong contrast of colour between the sexes, although this is of course a comparatively trifling character. This Antelope, although strictly confined to India south of the Himalayas, has been more or less known in Europe for a long period, probably since the invasion of India by Alexander the Great. It has been even conjectured that the twisted horn of the fabled Unicorn of mediæval writers may have been originally based upon single horns of the present animal, though other authorities are inclined to refer the Unicorn’s horn to the Narwhal. This, however, is rather an antiquarian than a zoological question. In the two last and most complete editions of the ‘Systema Naturæ’ Linnæus based his _Capra cervicapra_ upon the descriptions of several of his predecessors (Gesner, Aldrovandus, Ray, and Brisson), which certainly refer to the present species, and we may therefore safely adopt _cervicapra_ for it as its specific term. The name _bezoartica_ of Linnæus, which has been employed in its place by some authorities, refers to quite a different animal, probably to one of the wild goats, but certainly not to the Indian Antelope. As regards the generic appellation of the present animal, we have already explained our reasons for following the general practice of the best modern authors in considering the _Capra cervicapra_ of Linnæus to be the type of the genus _Antilope_, although Pallas, who founded the genus, did not give it precedence in his list of species. But the fact is that Pallas in his day never realized the importance attached in modern times to the exact designation of the types of genera, and had probably no intentions in the matter. The correct scientific name of the Black-buck is therefore, in our opinion, _Antilope cervicapra_.