Servals and an Otomys /raw East Africa. 207 



General colour above "clay-colour," paling through " cream- 

 buff" to white on the belly. Black stripes narrow and spots 

 small, rarely reaching more than 10 mm. in diameter; median 

 dorsal lines much broken up and whole lower back covered 

 wilh small black spots. 



Skull large; teeth very large and stout. 



Dimensions of type (measured by the Collector) : — 



Head and body 837 mm.; tail 315 ; hind foot 192 ; ear 91. 



Skull: greatest length 128; basilar length 108; zygo- 

 matic breadth 91 ; combined length of p 3 and p* 2Q ; length 

 and breadth of upper carnassial 16 x 8 ; length of lower 

 molar 12-3 ; bullae 26'5. 



Flab. Beira, Portuguese East Africa. 



Type. B.M. no. 7. 6. 2. 29. Original number 1749. Col- 

 lected 23rd December, 1906, by C. H. B. Grant, and presented 

 to the Natural History Museum by Mr. C. D. Rudd. 



Otomys irroratus elgonis, subsp. n. 



An Otomys of the group with a deep and a shallow groove 

 on the lower incisor, which, though by its skull-characters 

 closely allied to 0. i. tropicalis, falls by its size into the 

 section containing the smaller members of the group. 



General colour distinctly darker than in tropicalis (" seal- 

 brown " and " mummy-brown " respectively). 



Skull shaped much as in tropicalis, but in all ways smaller, 

 frontal crests less marked, interorbital area wider. 



Dimensions of type : — 



Head and body 165 mm. ; tail 81 ; hind foot 27; ear 21. 



Skull : greatest length 41 ; basilar length 34 ; zygomatic 

 breadth 20*5 ; interorbital breadth 4*6 ; brain-case breadth 15; 

 diastema 10 ; upper molar series 9. 



Huh. Elgonyi, Elgon, B. E. Africa. Alt. 7000 feet. 



Type. Old male. Kudd Collection. Original number 340. 

 Colkcted Dec. 4ih, 1909, by B. Kemp. 



Seven specimens examined. 



From irroratus nyikcr, with which it agrees in size, elgonis 

 is at once distinguishable by its darker colour and the broad 

 nasals of the former, and the same character, as well as 

 smaller size, separates it from angoniensis. It is undoubtedly 

 most closely related to tropicalis from Mount Kenya (8000- 

 10,000 feet), and differs entirely from its nearest neighbour 

 jacksoni (Mount Elgon, 13000 feet), which has two deep 

 grooves on the lower incisor. 



