There is a good mounted example of the male Nilgai in the British Museum, obtained from the Zoological Society’s Gardens in 1896, besides two other older mounted specimens kept in store. There are also specimens of heads of this animal from the Khalcote jungle south of Mhow, presented by Col. J. Evans, and from Jullunder near Sangor, presented by Mr. G. A. Carmichael, and some skulls and horns from Oude and the North-west Provinces, presented by Mr. A. O. Hume, C.B. From the last of these the drawings of the skull and horns and frontlet of an adult male (figs. 98 and 99) have been prepared. _November,_ 1899. Genus II. TRAGELAPHUS. Type. _Tragelaphus_, =De Blainv.= Bull. Soc. Philom. 1816, p. 75 T. sylvaticus. _Euryceros_, =Gray=, Cat. Rum. B. M. p. 47 (1872) T. eurycerus. Large or medium-sized Antelopes, with the facial, neck, body, and leg markings characteristic of the subfamily usually well expressed. Hind-quarters as high as or higher than the withers; fore limbs not longer than hind limbs. Hoofs of normal form, their length along the anterior border about equal to the basal width from back to front; posterior surface of the pasterns covered with hair. Ears large and expanded. Horns present only in the male; of medium length or long, always longer than the face; flat at the base behind; with a strong external basal ridge arising just behind the orbit and forming an obtuse angle with the plane of the nasals; spirally twisted, the twist affecting the whole horn with the exception of its extreme tip, but shallow and not taking the form of an open corkscrew spiral; the anterior ridge, which starts in front of the middle of the base of the horn, only reappearing once close to the tip. Skull much less flat than in _Boselaphus_, the parietal region more depressed. Molar teeth with short crowns; those of the upper jaw with only a small accessory column. _Range of the Genus._ Africa, south of the Sahara, from Senegambia, Abyssinia, and Somaliland, over the whole continent. The species of this genus here recognized may be tabulated as follows:— _a._ Height at withers of adult male about 30 inches; horns from about 10 to 15 inches, normally with black tips; a white patch present upon the upper end of the throat. _a1._ A large white patch at the base of the fore leg on the inner side; inner side of fore leg from knee to fetlock and of hind leg from hock to fetlock white; body striped or spotted with white. _a2._ Adult male a rich dark red colour above, and very distinctly marked with many white spots and stripes 121. _T. scriptus._ _b2._ Adult male much duller or darker in colour, spots and stripes less numerous, the latter often absent.