16 EINAR LONNBERG, MAMMALS COLLECTED BY THE SWEDISH ZOOLOGICAL EXPEDITION ETC. 
the old Baboons and the yell of the young when they are chastised are heard from 
the thickets and, if some steep rocks are near, the whole troop is soon seen climbing 
up to a safe distance. The slender necks of the Gerenuks appear as reddish looking 
streaks against the grey bush when the animals stand gazing at the intruder. Long- 
eared Somali Hares and pretty little Dikdiks in pairs or threes start now and then 
out from below the bushes and run away. On more or less open places Grévy’s 
Zebras in small herds, but sometimes single and often in company with splendid 
Oryxes, have their pasture. Grant Gazelles in small flocks are usually found not very 
far from the river, and the Waterbucks as a rule live in still closer proximity to it. 
The usual haunts of the Impalas are among bushes around small ravines not far 
from water. The herds of Buffaloes select such districts where open places with 
grass are surrounded by dense thornbush and they have their well beaten tracks 
from there to the water. The big animals appear to be in need of water every day 
(or night).? In consequence of this they cannot live too far from water, but some 
species like the Rhinoceros have their feeding grounds at a distance of two or three 
hours march and perhaps even more from the water and they must thus travel such 
a distance every night. Buffaloes and Oryxes are also sometimes found more than 
one or two hours from water. The long legs of the Elephants and Giraffes enable 
them to cover great distances without difficulty and they can thus feed far from 
their drinking places. Warthog spoors were seen every day at the waterpools at Njoro 
and the few specimens observed were seen, partly not far from there, partly not far 
from Guaso Nyiri. Some of the smaller animals are probably more independent of 
the pools and the river whether they slake their thirst with the dew, or with the 
juices contained in the vegetative matter they feed on. I am uncertain whether 
the Gerenuks ever drink, but it seems quite impossible to think that all Dikdiks, 
which appear so stationary and which sometimes are found to become more and 
more common, the further one proceeds from the river, should crowd down to the 
water to drink and then disperse to their haunts again every night. It would be 
far too dangerous for their existence to travel so much. The rodents of this country 
probably do not drink, and the same is no doubt the case with the Hyraxes. The 
Baboons and the Tumbili monkeys are seldom seen far from the water and the former 
come down very regularily to drink. The spoors of the carnivores, Lion, Leopard, 
Striped Hyena and the Black-backed Jackal as well as the animals themselves were 
mostly seen near the water. The Genet (Genetta dongolana) and the Mungoose (Mungos 
sanguineus rendilis) were trapped near the river, but Helogale which often lives among 
the colonies of Ground Squirrels was almost always shot at a comparatively consid- 
erable distance from it. 
The small mammals are comparatively less numerous than the big and medium 
sized. There is no tree squirrel in the thornbush, and the only climbing mammal 
except the monkeys mentioned above is the small Galago gallarum. Two species of 
bats were observed, the yellow-winged Lavia, and the small Nycteris hispida. Of in- 
'T am uncertain, however, whether the Elephants as mentioned below need- to drink oftener than every 
second night. 
