522 Mr. G. Dollman on 



effect of the black hair-tips is most marked. Face and head 

 pale buff-coloured, rather darker and redder on tlie back of 

 head and neck (buff no, 2, ' Repertoire de Couleurs '). Sides 

 of face and flanks pale buff (pale buff no. 1, ' Repertoire de 

 Couleurs'); hairs with slate-grey bases, paling to white 

 towards the tips, apical third buff-coloured. Ears clothed 

 with short brownish and buff-colonred hairs ; tips of ears 

 greyish wliite. Backs of hands and feet and ventral surface 

 of body white. Tail about as hairy as in vlcina, much lighter 

 above, the hairs on upper surface brownish red. Ventral 

 surface of tail, like that of vicina, light anteriorly and 

 darkening towards the tip. 



Size of skull rather less than in T. vicina ; molar teeth a 

 good deal smaller. 



Dimensions of the type (measured in the flesh) : — 



Head and body 145 mm.; tail 182; hind foot 35 ; ear 21-5. 



Skull : greatest length 41 ; basilar length 31-2; condylo- 

 incisive length 362 ; zygomatic breadth 21 ; interorbital 

 breadth 7; breadth of brain-case (across squamosal region) 

 18; length of nasals 18; palatilar length 19; breadth of 

 palate (inside m') 5; length of palatal foramina 7' 5 ; greatest 

 diameter of bullae 11 ; alveolar length of upper cheek- 

 teeth 6-5. 



Hab. Nyama Nyango, Eusso Nyiro. Altitude 3000 feet. 



Type. Old female. Original number 1799. Collected 

 January 27th, 1911. 



The light colour of the upper surface, both of the back and 

 tail, of this Eusso Nyiro Tutera readily distinguishes it from 

 the Kitui species, T. vicina, and, taking into consideration 

 the cranial differences between the two forms, the Eusso 

 Nyiro specimens must be regarded as specifically distinct. 



Tatera nigricauda nyama, subsp. n. 



Closely allied to Tatera nigricauda, Pet., but smaller in 

 size and with a lighter coloured tail. 



Size rather less than in T. nigricauda, a feature more 

 noticeable in the skull- than in the skin-dimensions. General 

 colour of upper surface much as in T. nigricauda, the dark 

 hair-tips not so prominent, the general effect a little lighter 

 (buff no. 1 mixed with snuff-brown no. 2, ' Repertoire de 

 Couleurs'). Flanks rather purer in colour (pale buff no. ], 

 ' Rep. de Coul.'), the grey bases of the hairs much lighter, 

 in some cases being almost white. Backs of hands and feet 

 and entire ventral surface white. Tail very similar to that 

 of nigricauda, but hairs lighter and browner, the general 



