26 ARKIV FÖR ZOOLOGI. BAND 10. NIO 12. 



P. {Hetero- 

 hyrax) n.? 9 



Greatest length 75 mm. 



Condylo-incisive length 72 » 



Basal length 67 » 



Tip of nasal to occiput 69 » 



Zygomatic breadth 41 



Mesial length of nasals 14,6 » 



» » » frontals 22,3 » 



Frontoparietal to interparieto-occipital suture . 27,5 » 



Palatal breadth across outside of m^ 21,5 » 



Diastema • . . • 11 » 



Molar series front of p^ to back ol tn- 25,5 » 



Breadth of m'^ 4,9 » 



Breadth of m^ 5,2 » 



From the last two of these measurements it is apparent 

 that P. brucei has very much larger teeth than those of the 

 skull just described. 



As there is no skin to the skull and only one specimen 

 I do not like to give any name as it is not entirely excluded 

 that it might be anomalous in some respect or the other. 



As far as I can see, however, this skull cannot be re- 

 ferred to any of the hitherto known forms. 



Procavia (Dendrohyrax) Yilhelmi n. sp. 



A Dendrohyrax related to P. (D.) stuhlmanni, but smal- 

 ler vvith smaller teeth and skull, and apparently lighter in 

 colour. 



The general colour of the back is grizzled and marbled 

 with black and greyish white. This colour is produced in 

 the following way. The basal part of the hair is black to 

 an extent of about 25 mm., then follows a white, or dirty 

 whitish (but lighter than »putty colour» and more like »stone 

 colour», Dauthenay, Rép. de Coul. 312, i) ring, about 4 — 5 mm. 

 broad and finally a black tip of much varying length in the 

 individual hairs; some of the longest hairs are entirely black. 

 On the middle of the back, especially behind the dorsal spöt, 

 the black is dominating. The sides are lighter, grizzled grey, 

 and the lover flanks are uniform grey, which no doubt, at 

 least partly, is due to the black tips of the hairs having 

 been worn off to some extent. The black of the basal parts 



