132 EINAR LONNBERG, MAMMALS COLLECTED BY THE SWEDISH ZOOLOGICAL EXPEDITION ETC. 
river, consists of so soft ground that a walking man sinks down over his ankles, but 
I never saw any Kanganis in such places. On the southern side of Guaso Nyiri they 
were mostly seen in places where the soil was firm, sometimes with a layer of dry 
dust on top in which they now and then were seen rolling like horses. In many 
localities of wide extension the plains were thickly strewn with black, sharp-edged 
stones of volcanic origin, .and even in such places the Kanganis were fully at home. 
The soil of the thornbush country on the northern side of the river mentioned con- 
sists of hard-packed gravel with a great amount of quartz pebbles. My experience 
is thus that the Kangani prefers hard ground. 
The appearance of the hoots of old specimens testifies that. The present author 
can fully confirm by own experience A. H. NEUMANN’s statement in »Great and 
Small Game of Africa» (p. 89): »In stony country the soles of an old Grevy’s hoofs 
are sometimes worn almost quite flat, frog and all.» To this may be added that 
considerable pieces may be broken from the sides of the hoofs and, although this 
heals up again, the unevenness of the sides of the hoofs proves the hard usage they 
have been subjected to among the sharp stones. 
Considering the altitude I have only three observations which can be referred 
to the habitat of the Kanganis. Our camp at Lekiundu river was according to the 
barometer 1150 m., Njoro about 750 m. above the sea level, and our camp below 
Chanler Falls at about the same aititude as the latter. 
Artiodactyla. 
Suida. 
Potamocherus cheropotamus kenize LONNBERG. 
LiynperG: Ann. & Mag. Nat. Hist., Ser. 8, Vol. IX, p. 66. 
It is connected with great difficulties to obtain adult Bush-Pigs as they are 
nocturnal in their habits, and in day-time are hidden in the densest thickets that 
can be found, and where it is impossible to penetrate noiselessly as well as to see 
more than a few metres ahead. Fresh spoors were seen not far from Nairobi, in the 
forests on Kenia, and also at Meru boma, and a couple of times I even was near 
enough to hear when the pigs rushed away through the bushes but none was ever 
seen. In steppe and dry thornbush country they are not to be found, there the 
Wart-hogs take their place. 
From Mr. KiLeEtN of Nairobi I obtained a couple of Bush Pigs which had been 
killed not far from the place mentioned. They are both fully adult specimens, and 
resemble each other in colour. 
The whole head of an old sow (PIl.TX) including even the chin and lower jaw, 
is white, partly dirty white, with entirely black ears with rather long tufts, a black 
patch above either eye, and a black streak above the white whiskers. The head of 
