various Forms 0/ Arvicantliis pumlllo. 



637 



4. 6. 6. 14, 15. Notinsila, Pondoland. 



4. 9. 1. 62, 65-67. Wakkerstroom, Transvaal. Alt. eOOCy. 



4. 9. 1. 61. Zuurbron, Transvaal. Alt. 4600'. 



This form has slightly larger teeth than the other forms 

 with small bullse. It appears to range between the 

 Drakensberg and the coast at somewhat high elevations, 

 meeting the form of Basutoland and the Eastern Transvaal 

 at Wakkerstroom. The Pondoland and Natal specimens are 

 dull-coloured as compared with the more northern individuals, 

 but there is much variation in colour. 



The normal dimensions may be taken as : — 



Head and body 115 mm. ; tail 105 ; hind foot 22. 



Skull : basilar length 23 ; tooth-row 4*6 ; bullse 5*5. 



The following are some measurements of selected speci- 

 mens : — 



4. 5. 1. 65. 

 4. 5. 1. 68. 

 (Type) 4. 6. 1. 72. 

 4. 6. 6. 14. 

 4. 9. 1. 62. 



Y. adult. 

 V. old . 



Old 



V. old . 

 V. old . 



4.12.5.27. cJ. Adult 



Hind 

 foot. 

 , 22 

 22 

 22 

 22 

 22 

 22 



Basilar 

 length of 

 skull. 

 22 

 24 

 23 

 23-5 

 24 

 22-5 



Length of 



tooth-row. Bullae. 



4-6 6-5 



4-6 5-5 



4-6 5-5 



4-6 55 



4-6 6-5 



4-6 



5-5 



I have named this form after Chaka, the famous Zulu 

 chief. 



Arvicanthis pumilio dilectus. 

 Arvicanthis pumilio dilectus, de Wint. P. Z. S. 1896, p. 803. 



95. 11.3. 25-27. Mazoe, Mashonaland. Alt. 4000'. 



1115, 1117, 1118, 1122, 1123, 1135, 1140, 1150. Zout- 

 pansberg, Transvaal. Alt. 4400'. K.udd Exploration. 



98. 4. 4. 22. Krugersdorp, Transvaal. Alt. 4900'. 



The normal dimensions of tiiis form may be taken as : — 



Head and body 105 mm. ; tail 95 ; hind foot 20. 



Skull: basilar length 22; tooth-row 4'4 ; bullae 5 5. 



Mr. de Winton based his subsp. dilectus on the specimens 

 from Mazoe and spoke of them as dull-coloured ; the specimens 

 from the N.W. Transvaal are brighter and curiously resemble 

 A. p. griquce in coloration, though they are darker than that 

 form. 



The following are some measurements from selected 

 specimens : — 



