90 EINAR LÖNNBRRG, MAMMALS COLLECTED BY THE SWEDISH ZOOLOGICAL EXPEDITION ETC. 
Murid2e. 
Otomys irroratus elgonis WROUGHTON. 
WROoUGHTON: Ann. & Mag. Nat. Hist, Ser. 8, Vol. V, 207. 
One male and three females of this Rat were trapped on the eastern side of 
Kenia partly at an altitude of 2,500 m. around a glade in the primeval forest, partly 
at an altitude of 2,700 m. among a vegetation of tall plants of different kinds on a 
hill which rose a little above the mixed forest and bamboo region. The temperature 
at this latter place was rather low, about + 2” C in the early morning, but the 
very rich fur of this species appears to give it full protection. About half of the 
visible portion of the upper incisors and the molars in both jaws (but not the lower 
incisors) are blackened probably by the food. 
I believed at first that these specimens belonged to O. i. tropicalis THOMAS 
described from Kenia, but a closer examination of the skulls revealed that their 
dimensions agreed better with WROoUGHTON's subspecies. Especially striking appeared 
to me the interorbital breadth which in my specimens is 4,5 mm., in the type of 
O. i. elgonis 4,6 mm, but in the type of O. ti. tropicalis only 3,3 mm. Other dimen- 
sions as well agree with WROoUGHTON”s description of O.:t. elgonis. The frontal crests 
are not strongly developed. 
Otomys angoniensis elassodon Oscoop. 
Oscoop: Field Mus. Nat. Hist. Zool. Ser. Vol. X no 2, p. 10. 
Five Specimens which fully agree with regard to their measurements and skull 
characters with Oscoop's description (1. c.) were collected at Kagio at Kutu (between 
Fort Hall and Embu boma) 22, and at Guaso Nviri on its southern side near 
Lekiundu river and also near the ford on the Marsabit road. The type locality is 
Naivasha but it has also been recorded from »Rumruti, Laikipia plateau». My loca- 
lities prove that it is to be found to the north and east of Kenia as well. 
One or two of my specimens are a little paler and might with. regard to colour- 
ation approach O. nyike canescens OsGoop (1. c. p. 10), but the eranial measurements 
of these specimens as well, agree better with those of the other race as quoted above. 
Dendromys insignis. 
THoMAS: Ann. & Mag. Nat. Hist. Ser. 7, Vol. KIL -p. 341 
An old male with nearly worn out teeth of this pretty Tree-mouse was trapped 
near Escarpment station among bush in the forest "hi 1911. This specimen agrees 
very well with regard to size and colour with THOMAS” description (1. ec.) of the type 
from Nandi: Specimens obtained at the native village Kazere northeast af Kenia 
