'J 10 Mr. O. Thomas on a 



Other specimens from the M'Kiiulu River, E. Athi plains ; 

 altitude IGOO m. 



Tiipe. Adult female. B.M. no. 1. 1. 26. 2. Killed 

 17th January, 1901, and presented by C. S. Betton, Esq. 



This dark Lycaon might have been considered specilically 

 separable from the other forms had it not been that inter- 

 mediates occur in the ]\I\veru region, w here a specimen, now 

 in the i\Iuseum, was obtained by Mr. Itichard Crawshay. 



Curiously enough, the Abyssinian hunting-do^, as repre- 

 sented by a s|)eeimen collected by Essler at Arinaloclu)o, is 

 again equally black and yellow marbled like the typical 

 M oza m bi que form . 



II. — Pedetes. 



That Pedetes inhabited East Africa has been long known, 

 but owing to the fact that the specimens sent had been young 

 ones, no proper comparison with the South-African P. coffer 

 had hitherto been possible. Now, however, Mr. C. 8. 

 Betton, to whom the Museum is indebted for so many East- 

 African mannnals, has given us a fine skull of a Pedetes 

 obtained by him at Morendat, and a com[)arlson of this with 

 South-African examples shows tiiat the northern form should 

 be distinguished from the southern. 



It may be called 



Pedetes surdaster^ sp. n. 



Size, as judged by skull, rather less than in P. cnffer, but 

 part of this dilference is due more to the smaller nasals and 

 buUai than to a real reduction in general size. Nasals con- 

 spicuously smaller both in length and breadth, not reaching 

 back to the level of the hinder margin of tiic anteorbitul 

 fossa. Premaxilhiry processes on each side of nasals very 

 narrow, barely 1 millim. broad at the broadest part, instead of 

 about 3 millim. Top of brain-case more vaulted than usual. 

 Interparietal broad, short antero-])Osteriorly, its anterior 

 margin projected angularly forward instead of being evenly 

 convex. Bulke conspicuously smaller in every dimension 

 than in P. caffer^ the visible surface above barely two thirds 

 that in the allied species ; the distance from the most anterior 

 upper corner to the level of the most projecting point behind 

 is 13*3 millim., as compared with 18'0, 19, and 195 in three 

 skulls of P. differ^ while below the antero-posterior diameter 

 of the inflated bulla is 11'5 as compared with over 11 in 

 P. caffer, Key-sha|)ed process across bulla from back of 

 sf|uan)o.sal shorter ('J'7 millim.) and narrower. Anterior 



