“It was sent to me in March last from Damaraland by Mr. Eriksson, who has lately presented to us a male specimen. The Museum previously possessed a young male, also a Damaraland specimen, presented by the late Mr. James Chapman.... The colouring of the male and female is the same; but the adult male has straight horns 2¾ inches long, with prominent irregular ridges (seven in one example) circling their basal half. In the young male that we have the horns are 1 inch shorter, and there are only three undeveloped ridges. “Mr. Eriksson informs me that this Antelope frequents rocky hills in the vicinity of Omaruru (about a degree north of Walvisch Bay), but is not easily procured, owing to its great agility among its stony haunts.” Judging from the localities it would appear highly probable that the Dik-diks obtained on the River Cunene by the well-known Portugese collector d’Anchieta, and referred by M. Barboza du Bocage to _M. saltiana_, as also the skull in the Leyden Museum procured in Mossamedes by Mr. P. J. Van der Kellen, and assigned by Dr. Jentink in 1887 to “_Cephalophus hemprichianus_” will be found to belong to _Madoqua damarensis_, and that this species extends into the southern provinces of Angola, where the country is of the same character as in Damaraland. _December, 1895._ 56. KIRK’S DIK-DIK. MADOQUA KIRKI (GÜNTH.). _Neotragus kirkii_, =Günth.= P. Z. S. 1880, p. 17 (fig. head & skull) (Brava, S. Somaliland); =Thos.= P. Z. S. 1885, p. 222 (Kilima-njaro); =Johnston=, Kilima-njaro, p. 355 (1886); =Hunter=, in Willoughby’s E. Africa, p. 290 (1889); =W. Scl.= Cat. Mamm. Calc. Mus. ii. p. 166 (1891); =Flow. & Lyd.= Mamm. p. 338 (1891); =Ward=, Horn Meas. p. 79 (1892); =Lyd.= Horns and Hoofs, p. 215 (1893); =Jackson=, Badm. Big Game Shooting, i. pp. 285, 310 (1894); =Matschie=, Ost-Afr. Säugeth. p. 118 (1895). _Neotragus damarensis_, =True=, P. U. S. Nat. Mus. xv. p. 477, pl. lxxx. (skull) (1892). _Madoqua kirkii_, =Thos.= P. Z. S. 1894, p. 328. VERNACULAR NAME:--_Paa_ of Swahilis (_Jackson and others_).--In common with _Raphicerus campestris_ and _Neotragus moschatus_. Size medium. Proboscis more developed than in group A. General colour coarsely grizzled greyish fawn, more or less suffused with fulvous on the back, and with rufous on the sides and neck. Limbs rufous, but of very variable intensity.