316 MR. GUY DOLLMAN ON 
53. ARVICANTHIS ABYSSINICUS RUBESCENS Wrought. 
6. 221, 222. Patong, Uganda. 
sg. 190,191; @. 189. Bakoro, Uganda. 
The type locality of Arvicanthis a. rubescens is Kibero, Unyoro ; 
it appears to be distributed over a very large area, the British 
Museum possessing specimens from localities as far apart as 
Nimule and Ruwenzori. 
54, ARVICANTHIS ABYSSINICUS PRECEPS Wrought. 
3g. 130. Baringo. 
This Arvicanthis, described from Naivasha, has already been 
recorded from Baringo, Mr. Kemp having obtained a large series 
of specimens both at Baringo and on the Laikipia Plateau. 
55. ARVICANTHIS TESTICULARIS JEBELZ Heller. 
g. 200, 213. Kamchuru, Lobor. 
Central Province, Uganda. 
56. ARVICANTHIS RUMRUTI PALLESCENS Dollm. 
Abstract P. Z.S. 1914, p. 25. (April 14.) 
6. 20, 23, 24; 2, 21,-22. - Loita Plains. 
6.115; @. 117. Southern Guaso Nyiro. 
Allied to Arvicanthis rumruti Dollm. ; larger in size and much 
paler in colour. 
General proportions rather greater than in rwmruti; hind foot 
25-28 mm. in length. 
Colour of dorsal surface pale olive-grey, lined with brownish 
black and washed over with a light yellowish tint. Flanks 
dirty white washed with pale yellow, gradually passing ito the 
white ventral surface, without any marked junction of the two 
areas. Ears clothed with short yellow hairs, almost as brightly 
coloured and conspicuous as in the Somali species. 
Backs of hands and feet yellowish. Ventral surface of body 
white ; hairs longer than in rwmruti, and the general effect very 
much whiter, owing to the dark basal portions of the hairs being 
hidden by the long white tips. Tail much as in rwmruti, but 
rather paler throughout. : 
Skull larger than that of the Laikipia form, with larger molars 
and more inflated auditory bullee. 
Dimensions of the type (measured in the flesh) :— 
Head and body 133 mm.; tail 109; hind foot 26; ear 17. 
Skull: greatest length 33 mm. ; basilar length 27-7; condylo- 
incisive length 31:5; zygomatic breadth 17:8; interorbital 
constriction 5; length of nasals 12:7; palatilar length 15 ; 
length of palatal foramina 7-4; alveolar length of upper molar 
series 675. 
Hab. Uoita Plains, B.H.A. Altitude 6300 feet. 
Type. Old male. B.M. No. 13.10.18.142. Original number 
®§. Collected on October 4th, 1912. 
