1897.] KEW APEICAN MAMMALS. 435 



Dimensions of the type, an adult female, in spirit : — 



Head and body 156 mm. ; tail 154 ; hind foot 49-7 ; ear 29-5. 



Skull — basal length 43 ; greatest breadth 23 ; nasals, length 

 17-5; interorbital breadth 7-5 ; breadth of brain-case 17-8 ; palate- 

 length 27-5 ; front of i.^ to back of m.- *, 26-8 ; combined lengths of 

 p.-', p.*, m.\ and m.', 12-1. 



Hah. Eovuma River, 100 miles inland. 



Type. B.M. 63. 10. 12. 2. Collected and presented by Dr. 

 Livingstone. 



Two further specimeus, without exact histories, but probably 

 from the same expedition and locality, had been presented to 

 the British Museum by Sir John Kirk in 1864. One of these had 

 been made into a skeleton on arrival, but its sex unfortunately 

 not recorded ; the other, Hke the type, was a female. 



This species was intermediate between the other two in the 

 character of its tail-bristles and in locality, but in size was rather 

 smaller than either. It was just possible that Peters's Boror 

 specimens might prove to belong to it, as its skull was very like 

 that figured by him. However, as already stated, the typical locality 

 of Peters's species should be taken as Senna. 



3. P. STJXTAJSi, sp. n. 



Size largest. Tail very thinly haired, almost naked, coloured as 

 in P. rovumce ; along the whole of its under surface were a large 

 number of most peculiar bristles, from 2 to 5 mm. in length, as 

 had been described by Dr. Giinther ; stiff but elastic, and with a 

 round or oblong knob at their tip ; the bristles themselves were 

 whitish, with the knobs nearly black. Rump very little naked, 

 even the comparatively small part that was bare in P. tetnidactylus 

 having a certain sprinkling of fine hairs visible with the naked 

 eye. Sole-pads large, and the plantar reticulations particularly 

 distinct. 



Skull large and powerful, with squarely expanded zygomata 

 and broad brain-case. Palate almost without vacuities, the large 

 ones present in the other species opposite p.* and m.^ almost or 

 quite filled up. 



Dimensions of the type, an adult male, in skin t : — 



Head and body {c.) 198 mm. ; tail (c.) 150 ; hind foot 53-5. 



Skull— basal length 50 ; greatest breadth 29-8 : nasals, length 

 20-5 ; interorbital breadth 9 ; breadth of brain-case 20 ; palate- 

 length 31-2 ; front of i.^ to back of m.^ 29-2 ; combined lengths of 

 p.^, p.'*, m.\andm.", 13*5. 



Hah. Mombasa {Kirh and Taylor), Mandera, inland of Bagamoyo, 

 (Langheld) ; Masailand (Jackson). 



Type. B.M. 80. 11. 30. 10. From Mombasa, collected by Sir 

 J, Kirk. 



No detailed comparison of this fine species with its allies was 



* The last molar. 



t Of another adult male, in spirit, from the Eabai Hills :— Head and body 

 178 mm. ; tail 154 ; hind foot 55'5 ; ear 35. 



