66 On new Mammals from British East Africa. 



Type locality. Thorn-bush north of Guaso Njiri, below 

 Chanler Falls. 



Potamocltfprvs choeropoiamus kenice, subsp. n. 



Head white, with black ears ; a black patch round eacli 

 eye and a black streak above the white whiskers. Dorsal 

 crest from behind the ears to the middle of the back of black 

 bristles with \on^ white tips. In the sacral region in front 

 of the tail similar bristles form a slio^ht crest. Sides of 

 back rich rufous much mixed with black ; sides of body and 

 neck, lower parts, legs, and feet black. Width of parietal 

 flat area about 8"3 per cent, of upper mesial length of skull. 



mm. 



Upper mesial length of skull ( J ) 349 



Width of parietal flat area 29 



Greatest zygomatic width 177 



Canine apophyses strongly developed and ankylosed with 

 lateral exostoses of snout. Nasal surface flat and very 

 broad. 



Type locality. Forests near Nairobi. 



Procavia brucei horana, subsp. n. 



A member of the Ileterohyrax group, which is closely 

 related to Procavia brucei hindei^ Wroughton, but much 

 smaller. 



General colour of back burnt umber-brown, grizzled with 

 whitish, and dark brown tips to the hair. Face darker than 

 back, almost pure blackish brown. Superciliary mark dull 

 whitish, dorsal spot cinnamon (no. 4, Rep. de ('oul.) ; flanks 

 brownish grey. Underparts from chin to vent dull creamy 

 white, a little bufhsh between fore legs and round vent. 



Length of hind foot (skin-measurement) about 53 mm. 



Skull of type specimen ( ? , stage YIII.) : greatest length 

 74 mm.; basilar length GG ; zygomatic breadth 39'5; length 

 of nasals 16 ; length of upper molar series 2S*3. 



Protiiberances on the posterior margin of the palate just 

 as described by Wroughton for P. h.hindei. As the type of 

 the latter was also a female stage VIII., the measurements of 

 the skulls are directly comparable. 



Type locality. North of Guaso Nyiri, not far east of the 

 j^larsabit road. 



