452 ME. r. J. JACKSON ok the [May 4, 



place called Taka, opposite the island of Patta. It appears to be 

 very partial to the viciuity of cultirations, and particularly to 

 ground formerly under cultivation but from time to time lying 

 fallow, where I suppose it finds better feeding and also good 

 covert. The Abyssinian Oribi, on the contrary, appears to avoid 

 the proximity of mankind, and prefers for the most part the open 

 valley ' downs ' far away from habitations, though I have seen 

 them quite close to cultivations in Xandi. 



To my knowledge the latter antelope is not found east of the 

 Mau plateau. It rauges from the borders of Lumbwa (possibly 

 farther south) to Turkwel, and west to Lake Victoria. I have 

 lately sent some skins and skulls of this beast to Dr. Bowdler 

 Sharpe, all procured by myself between the Sio river, in Kavirondo, 

 and on the Mau plateau up to 8000 feet. A very noticable peculi- 

 arity of both the species is that when disturbed and retreating they 

 jump high into the air, and when 'landing' do so on their hind 

 legs, and not, as other antelopes do, on their fore legs. 



8. Eaphiceeus campesteis (Thunb.). 



The Steinbuck is found throughout Masailaud, but does not 

 range to the west of Mau. 



9. CoBUS ELLiPSiPETMNiJS (Ogilby). 



I beHeve that the Common Waterbuck (C. ellipsiprymnus) does 

 not occur north of the Athi plains and west of Moimt Kenia. 

 Lake Xaivasha is about the southern limit of C. defassa. 



10. COBUS DEFASSA (Eiipp.). 



The only "Waterbuck found in this district is C defassa. I see 

 in the list of mammals at the end of Grregor/s book there is a 

 ' C. ellipsiprymnus ' mentioned from Xjemps ! I think this must 

 be a mistake, as I have lately returned from Njemps, where I saw 

 many herds of Waterbucks, all of which were Cohus defassa. 

 Again, all the Waterbucks I have seen at Lakes Naivasha and 

 Elmenteita were also C. defassa. There is no mistaking the con- 

 spicuous white rump of this beast. 



11. CoBXTS THOMASi, Neumann. 



This antelope does not, I think, range east of Kabras in Kavi- 

 rondo. It is plentiful in Kavirondo, along the banks of the Xzoia 

 and Sio rivers, and is also vei-y niunerous in L'ganda and Torn, but 

 how far west and north it extends I am not in a position to state. 



I believe that this beast is never found far from water. Per- 

 sonally I have seen a good many, and they were never more than 

 a few hundred yards from water. It A^as "this fact that led me to 

 believe formerly that the}' were C. vardoni, as I remembered what 

 Selous had said about Yardon's Antelope being always found near 

 water. 



