274 Mr. R. C. Wroughton on 



G.4.3.44. G.4.3.47. 6.4.3.48. 

 Old c?. Ad. $. Yg. d. 



(Type.) 



Head and bodv 172 loo 127 



TaU... .' 97 97 76 



Hind foot 28 26 24 



Ear 20 19 16 



Skull: 



Greatest length 40 38 ? 



Basilar length 33 31 ? 



Zygomatic breadth 20 20 ? 



Upper molar series .... 9 9 8'8 



Eullte 7 7 ? 



(10) Otomys irroratus angoniensis, subsp. nov. 



2.1.6.20-24. M'Komblmie, B.C.A. {Sir H. Johnston). 

 Alt. 8000'. (Type B.M. no. 2. 1. 6. 22, a fully adult ? .) 



A large Otomys with the characteristic dark brown 

 colouring of the northern forms. Unfortunately the 

 dimensions were not recorded by the collector and the 

 skulls are much broken, but the following may be accepted 

 as the dimensions of the species : — 



Head and body 175 mm. ; tail 90; hind foot 30; ear 21. 



Skull : greatest length 42 ; basilar length 34 ; zygomatic 

 breadth 20 ; length of upper molar series 9 ; bullae 7o. 



The size is much as in typical irroratus, but the warm 

 northern colouring distinguishes it markedlyfrom thisspecies; 

 the southern form cupreus which resembles it in colouring 

 is much smaller. From its more immediate neighbours it 

 may be distinguished, from nyikce by the shorter hind foot, 

 much broader, flatter, nasals, and the much smaller bullae of 

 that species, and from tropiccdis, which it resembles in size 

 and length of hind foot, by its narrower, stouter skull, rather 

 wider, compressed nasals, and rather larger bullae. 



(11) Otomys irroratus tropicalis. 



Otomys irroratus tropicalis, Thos. Ann. & Mag. Nat. Hist. vol. i. p. 314 

 (1902). 



0.2.1.18-20,22,23. Mt. Kenya, B.E.A. {Mackinder). 

 Alt. 10,000'. 



93. 2. 3. 29. Mianzini, B.E.A. (Jackson). Alt. 8500'. 



Thomas in his description quotes from the collector's 

 label 195 and 93, for the head and body and tail measure- 

 ments respectively, btit 1 am confident there is some error iu 

 these. It is, in fact, a rather short-tailed Otomys of about 

 the size of typical irroratus, and I therefore give as normal 

 dimensions of this species : — 



