484 
APPENDIX C 
ing and dancing about a bright camp fire. Although we tried many times 
to shine their eyes with a powerful light, we never succeeded, nor were we able 
to hear any rustling of the branches or scraping on the tree trunks as one might 
expect an animal of such size to make. The porters were offered a rupee apiece 
for dassies, but none was brought in. 
Rock Hyrax {Procavia hrucei maculata). These animals inhabited the rocks and 
cliffs on Ulukenia Hills in fair numbers. None lived in burrows of their own 
make, but took advantage of the natural crevices for cover. I heard their 
shrill calls at night, usually when the moon was out. Several were shot and 
two trapi^d in traps set in narrow passages through which the animals travelled. 
Klippspringer {Oreotragus oreotragus). Several pairs of these little antelopes were 
seen on Ulukenia Hills, but never were more than two found at a time. They 
lived on the rocky hill-sides and were quite tame, allowing one to approach 
within twenty-five yards before taking fright and dashing into the rocks, inva¬ 
riably their shelter when alarmed. When thoroughly frightened they made 
a loud sneezing sound. Two were collected; one of which was a female with 
horns. A young Boer who had lived in that neighborhood three years told me 
that all the females of proper age had horns. 
Pygmy Gerbilie {Dipodillus harwoodi). These little sand mice resemble very closely 
some of our American pocket mice (Perognathus). Pleller took several on the 
Njoro O Solali and found them common, and I caught one specimen on the 
South Guaso Nyero River. On the sandy desert fiats on the south-west side of 
Lake Naivasha they were abundant. The holes running obliquely into the 
ground were sometimes blocked with sand from the inside. On the opposite 
side of the lake there was less sand, and here the gerbiiles were found only in 
spots. In sand alone their burrows resembled those described, but where the 
ground was hard they entered almost perpendicular, and were never blocked with 
sand. Often seed pods and tiny cockle burrs were strewn about the entrances. 
Pygmy Mouse (Mus[Leggada]gratus). Various forms of this tiny little mouse were 
taken all along the route we travelled. They were caught in traps set at ran¬ 
dom in the brushy thickets in the lowland, as well as in the open grassy spots 
on the rocky hill-sides where they frequented the runways made by various 
species of Mus, A few were collected on Mount Kenia. 
Athi Rock Mouse (Epimys nievenlris ulae). This mouse proved to be a new species. 
It was common in and about the rocks on Ulukenia Hills, which is the only 
place where we found them. Those taken were caught in traps baited with 
peanut butter, dried apple, and rolled oats and set among the rocks. 
Forest Mouse {Epimys peromyscus). At our camp at 8,500 feet altitude we first met 
with this mouse, and although a good line of traps well baited and set about 
stumps, tree trunks, and logs for three nights, but one mouse was captured, 
that being taken under a large log. Several others were trapped in the thick 
brush bordering the bamboo. At 10,000 feet several were caught in the bam¬ 
boo, and at 10,700 feet a good series was collected on a well-thicketed and tim¬ 
bered rocky ridge. 
Masked Tree Rat {Thammmus loringi). None were taken until we reached the 
south-west end of Lake Naivasha. Here and also at Naivasha Station a number 
were collected in traps baited with rolled oats and dried apple and set at the 
base of large trees and in brushy thickets in groves. In some of these trees and 
in the bushes, nests of sticks, grass and leaves were found. While setting 
