neio Gerhille from X. Xijasa. -ill 



jialafe much less deeply concave, the region of the palatine 

 ibraniina nnich less sunk below the general j)alatal level. 

 Palatine foramina shorter, their septum much narrower. 

 IJasicranial region with only one mesial vacuity, the usual 

 opening in the basisphenoid connecting with the floor of the 

 brain-case absent, that in the basioccipital alone present. 



Incisors comparatively weak, both narrower and less deep 

 than in P. coffer. Molars also rather smaller and narrower; 

 the two laminte of each tooth more parallel with each other, 

 less opened out externally than in P. coffer. 



Dimensions of the tyjjieal skull : — 



Greatest length 82 millim. ; basilar length G3 ; zygomatic 

 breadth 5o*5; nasals 27 x 18*5 ; interorbital bieadth 34; 

 breadth across postorbital processes 42 ; greatest n)astoid 

 breadth 42; interparietal 8'yxl4-5; palate length 31'7; 

 ]ialatal foramina 5*8 X 3*6 ; length of cheek-tooth series 

 (crowns) 15"7. 



llah. Morendat, mile 365 of Uganda Railway, British 

 East Africa. Altitude 2000 m. 



Type. Skull. B.M. no. 2. 4. 5. 5. Collected and pre- 

 sented by C. Steuart Betton, Esq. 



So far as is shown by a young specimen, P. surdaster does 

 not ditler externally very much from P. caff'er, though in 

 correlation with the smaller bullse we may expect to find the 

 cars rather shorter. 



III. — Tatera liodon, sp. n. 



Size of T. vah'da, Boc, but with even less distinct grooves 

 on the upper incisors. 



General colour, as usual, dark sandy, the back greyer and 

 the sides brighter. Under surface sharply defined white, the 

 hairs white to their bases on the chest and groins, slaty 

 basally on the belly. Face like back, top of nose rather 

 darker ; an indistinct lightish mark above tho posterior half 

 of each eye. Ears of medium length, their backs rather 

 darker than the head, a lightish patch at their posterior bases. 

 Upper surface of hands and feet pure white j claws long and 

 powerful. Tail shorter than the head and body, greyish 

 brawn above, whitish below, without terminal pencil. 



Skull not unlike that of T. valida, which it about equals 

 in size. Palatal foramina reaching back to the level of tho 

 front of m\ 



Upper incisors each with a very faint and scarcely percep- 

 tible median groove, as shallow as those of GcrbUliscus 

 Boehmi. 



