1891.] MR. O. THOMAS ON UNGULATES. 389 



(Adanson); Gambia {Whitfield, Rendall) ; Fantee {Mus. Brit.); 

 Uganda {Speke) ; Chobe River, Upper Zambesi (Selous). 



c. T. SCRIPTUS ROUALEYNi, Gord.-Cumm. 



Antilopus roualeynei, Gord.-Cumm., Hunter's Life S. Afr. 

 ii. p. 168 (1850). 



Dark brown in the males, the transverse stripes reduced to two or 

 three very obscure ones on the posterior part of the body, and even 

 these sometimes absent in the oldest males, at least on the Limpopo. 

 Spotting variable, generally less than in T. scriptus and more than 

 in T. sylvaticus. 



Hab. East Africa from British East Africa to the Limpopo. 

 Manda Island off Witu {Kirk) ; Mombasa {Kirk) ; Lower Zambesi, 

 east of the Victoria Falls {Sclavs) ; Limpopo {Gordon-Gumming). 



Mr. Selous ^ considers the typical roualeyni, that found on the 

 Limpopo, to be a slightly different form from that found on the 

 Zambesi and the East Coast farther northwards, and it is by no means 

 impossible that the latter will hereafter be found to require varietal 

 separation from roualeyni. 



d. T. SCRIPTUS SYLVATICUS, Sparrm. 



Antilope sylvaticus, Sparrm. Act. Holm. iii. p. 197, pi. vii. 

 (1780). 

 Dark brown, with no transverse stripes in adult or young, and the 

 spots reduced to quite a few indistinct ones on the haunches. 

 Hab. Cape Colony, 



4. The Dwarf Antelopes {Nanotragus and Oreotragus). 

 The conclusions come to by Sir Victor Brooke in his paper on the 

 Royal Antelope ^, are confirmed in most respects by the additional 

 materials now available, and especially I can heartily endorse his 

 fusion of the so-called genera Galotragus, Scopophorus, and Neso- 

 tragus with the earlier described Nanotragus. Apparently, however, 

 the genus Nanotragus need not be spht up into subgenera at all, 

 if we remove from it the Klipspringer, the type of " Oreotragus,^' 

 which Sir Victor has also included in Nanotragus, but which seems 

 certainly to be worthy of separate generic rank. Thus it may be 

 readily distinguished by its very differently shaped skull, its peculiar 

 thick brittle hairs, and more especially by the shape of its hoofs, all 

 the other species agreeing precisely among themselves and differing 

 from it in these three characters. Its specific name should of course 

 be Oreotragus saltator, and not saltatrix, the latter form being 

 merely the feminine term applied to it when it was placed in 

 ''"Antilope" by Boddaert. The other Dwarf Antelopes appear to 

 form a group so natural as to be all probably placed in the restricted 

 genus Nanotragus. 



1 P. Z. S. 1881, p. 752. ' Hunter's Wanderings in Africa,' p. 208 (1881). I 

 must acknowledge my extreme indebtedness to this most valuable paper, which 

 contains an excellent account of the Chobe, Zambesi, Limpopo, and Cape Bush- 

 bucks, drawn up from observations of many fresh specimens of both sexes and 

 all ages. 



2 P. Z. S. 1872, p. 637 et seqq^. 



