90 EINAR LONNPRRG, MAMMALS COLLECTED BY THE SWEDISH ZOOLOGICAL EXPEDITION ETC. 



Miiridae. 



Otomys irroratus elgonis Weoughton. 



Weoughton: 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 0. i. tropicalis Thomas 

 described from Kenia, but a closer examination of the skulls revealed that their 

 dimensions agreed better with Wroxjghton's subspecies. Especially striking appeared 

 to me the interorbital breadth which in my specimens is 4,5 mm., in the type of 

 0. i. elgonis 4,6 mm, but in the type of 0. i. tropicalis only 3,3 mm. Other dimen- 

 sions as well agree with Wroughton's description of 0. i. elgonis. The frontal crests 

 are not strongly developed. 



Otomys angoniensis elassodon Osgood. 



Osgood: 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 Osgood's description (1. c.) were collected at Kagio at Kutu (between 

 Fort Hall and Embu boma) ^^~^^ , and at Guaso Nyiri 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 plateaus. 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 coloiir- 

 ation approach 0. nyikce canescens Osgood (1. c. p. 10), but the cranial 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. XH, 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 '^/i 1911. This specimen agrees 

 very well with regard to size and colour with Thomas' description (1. c.) of the type 

 from Nandi. Specimens obtained at the native village Kazere northeast af Kenia 



