Since Heuglin’s time several other African explorers have met with this Antelope, but we are not aware that, with the exception of Sir Samuel Baker, they have brought home specimens. In the Appendix to ‘Ismailia,’ Sir Samuel placed the name of the present species in the list of animals met with in the Shooli country on the Upper Nile, and Sclater (who examined the specimens brought home by Baker) believes that there were some heads of this Antelope amongst them. Harnier’s description of an Antelope obtained in March 1861, during his voyage up the White Nile (Reise, p. 52, 1866), is apparently referable to _Cobus leucotis_. Dr. Schweinfurth, in ’Im Herzen von Afrika,’ mentions _Antilope leucotis_ in several places, and in his first volume gives fairly accurate woodcuts of the heads of both sexes. On the lower flats of the rivers of the Niam-Niam country, Dr. Schweinfurth found this Antelope by far the commonest species in the dry season, being met with in large herds of from 100 to 300 individuals. During the rainy season, he tells us, it resorts to the higher forest-bushes and separates into small troops for pairing. He also mentions as a peculiarity of this elegant animal that when running away it springs up into the air after the manner of the South-African Spring-buck, and shows its white rump. The flesh of _Antilope leucotis_, he tells us, is one of the best for culinary purposes. The female he describes as being very like that of _Cervicapra arundinacea_, but recognizable at once by the black on the front limbs. Emin, in his ‘Reise-briefen,’ refers in several passages to _Antilope leucotis_ as met with on the Upper Nile. Dr. W. Junker, in his ‘Travels in Africa,’ records the capture of a “Kala Antelope, _Antilope leucotis_,” as far south as the Upper Welle (about 3° 30’ N. lat.), near Mount Madyanu, and gives a figure of it in his text. Looking to this and to what Dr. Schweinfurth has told us, we must assume that the present Antelope extends beyond the water-parting of the Nile and Congo down to the banks of the Welle. _December, 1896._ [Illustration: THE BOOK OF ANTELOPES, PL. XXXIX. _J. Smit del. & lith._ _Hanhart imp._ Thomas’ Kob. COBUS THOMASI _Published by R. H. Porter._] 65. THOMAS’S KOB. COBUS THOMASI, NEUMANN. [PLATE XXXIX.] _Kobus leucotis_, =Scl.= P. Z. S. 1864, p. 103 (nec auctt.) (Uganda, _Speke_). _Kobus kob_, =Ward=, Horn Meas. p. 91 (1892); =Lugard=, E. Africa, i. p. 538 (1893) (Buddu and Kavirondo); =Jackson=, Big Game Shooting, i. p. 296 (1894); =Scott Elliot=, P. Z. S. 1895, p. 341 (Albert-Edward Lake). _Adenota kob_, =Matschie=, Säug. Deutsch Ost-Afr. p. 126 (1895). _Adenota koba_, =Matschie=, op. cit. p. 147 (1895). “_Cobus thomasi_, Neumann,” =Sclater=, P. Z. S. 1895, p. 868 (Kavirondo); =Ward=, Horn Meas. (2) p. 128 (1896).