recent collecting trip in Uganda, collected a very large series of 
this species. Arvicanthis rubescens appears to occur over a very 
large area, the British Museum Collection containing specimens 
from the following localities : Nimule, Bakoro, Patong, Kozibiri 
River, Unyoro, Ankole, Masaka, Entebbe, Kigezi, Kagambah, 
Mbarara, Nalasanji, Ruwenzori, and Busuenda. 
5. — Mylomys cuninghamei Tnos. 
R. G. 1121. Butiti, Uganda. 
This interesting rat has already been recorded from Uganda, 
Dr. CHrisTy having collected a specimen in the Mabira Foftest, 
Chagwe, some five or six years ago. Mr. Ron KEMP also obtained 
this species in Southern Uganda, near Lake Mutanda, and while 
working out his Uganda collection I was unable to find any 
characters of systematic value wherein the Uganda individuals 
differed from the type, a specimen collected by Mrs. Hozms TARN 
in British East Africa. The skin of the specimen obtained by 
Dr. BAYER at Butiti shows to advantage the characteristic white 
ventral surface which immediately distinguishes this genus from 
the closely allied Pe/ormys, where the ventral surface is dirty 
yellow or greyish and never so sharply marked off from the dark 
coloured flanks as in A/y/omys. The skull of Dr. BAYER’s specimen 
is unfortunately badly broken, but the cheek teeth are in position 
and the large recurved molar cusps, the chief generic character, 
are most COnspicuous. 
IIT. — BRITISH EAST AFRICAN COLLECTION. 
The mammals treated with in the following list were collected 
on or near the Tsavo and Sebaki Rivers, British East Africa, by 
Dr. BAYER. 
I. — Galago braccatus Errior. 
C', KR: G: 2070. Marabou, B. E. A. 
