312 Mr. M. A. C. lllnton o;i 



tino;efl with yellow anteriorly. Outer surfaces of limbs, 

 particularly of the fore limbs, greyer and less ochraceous 

 than in the southern forms. Inner surfaces of limbs and the 

 underparts pure white. Dorsal surfaces of feet dull ochra- 

 ceous buff. Tail normal, many ochraceous hairs appearing 

 on ventral surface ; the terminal hairs rufous. 



Collector's measurements. — Head and body 161 ram.; tail 120; hind 

 foot 36 ; ear 18. 



Skull : condylo-incisive length 36 mm. (ca.) ; dental length 18-5 ; 

 zygomatic breadth 23 ; cranial width 19'1 ; upper cheek-teeth (crowns) 

 7*6 ; PiJ in place, about half-worn. 



Paraxerns jlavivittis ihearms, subsp. n. 



Ilnh. — Mombasa, British East Africa. 



Tijpe. — A skin (B.M. 80. 11. 30. 6) collected and presented 

 to the British Museum by Dr. (afterwards Sir. J.) Kirk. 



Size and general characters as in other subspecies of 

 flavivittis. 



General dorsal colour strong fulvous ochraceous, somewhat 

 lighter, yellower, and less rich over shoulders and rump. 

 Slioulder-mantle quite inconspicuous, represented merely by 

 the lightening in the general hue just mentioned. Lateral 

 dorsal stripe pale yellow, somewhat broader than in exgeamis, 

 but still shorter ; the band between the light stripe and the 

 grey flank on each side concolor with mid-dorsum, narrow. 

 Facial markings inconspicuous. Ui)per surfaces of hands and 

 feet buff ; undeiparts white. Tail normal. 



XLIV. — TJine neio Subspecies o/Spalax monticola. 

 By Maktin a. (J. lllNTON. 



(Published by permission of the Trustees of the British Museum.) 



J..1KC other stiictly fossorial mammals, ujole-rats of the genus 

 Sfialax show a well-marked tendency to develop local races 

 cliaracterized by more or less obvious differences. No doubt, 

 that lorm of segregation which must result from a very 

 limited area of individual distribution and local differences in 

 .soil and food are to be looked upon as constituting together 

 the niainspring of this variability. Tiie differences between 

 race and race in such cases are apt to be very small and 

 trivial ; but, nevertheless, they show frequently a remarkable 

 constancy in their occurrence. 



