520 Messrs. 0. Thomas and R. C. Wroughton on 



zebras. In the case of two specimens living last year in the 

 Zoological Gardens in London, the interspaces of one were 

 white, of the other ochre-yellow. Lastly, as has already 

 been stated in this and other papers, the ground-colour in 

 " quaggas '' proper is either chestnut or creamy white. 

 Hence the reasons advanced by Dr. Trouessavt for separating 

 Burchell's zebra specifically from quaggas have no foundation 

 in fact. 



LXL — New Mammals from. Lake Chad and the CongOy 

 mostly from the Collections made during the Alexander- 

 Gosling Expedition. By Oldfield Thomas, F.R.S., and 

 R. C. Wroughton. 



The following descriptions of two new forms of dassie were, 

 by oversight, omitted from our paper in last mouth's issue of 

 this Magazine (p. 370). 



Procavia Lopesi, sp. n. 



A large dassie of the hypsodont group with a buff dorsal 

 spot. 



Size about as in Machinderi ; fur short (20 mm.) and 

 harsh as compared with that of Mackinderi (40 mm.) or even 

 of Jacksoni (30 mm.) ; general colour above near " raw 

 umber ^' of Ridgway, resulting from a mixture of black and 

 buff; under surface dark bufFy, the hairs greyish at base. 

 Under-fur of back slate-grey at base, dirty white terminally ; 

 hairs of outer fur either wholly black, or black with pale buff 

 tips. 



Face grizzled black and white or buffy, the dark patch on 

 the vertex really black, otherwise the usual colour-pattern of 

 the genus ; the dorsal spot comparatively broad, its hairs 

 bright buff from base to tip. 



8kull large as in Mackinderi^ much larger than in Jachsoni^ 

 width of frontals much less than in the former, nasals narrow 

 as in Jacksoni, quite different fiom the broad nasals of 

 Mackinderi. 



Dimensions of the type (those of the body taken in the 

 flesh) :— 



Head and body 560 mm.; hind foot 70 ; ear 35. 



Skull (Stage VIII.) : greatest length 100 ; basilar length 

 90; greatest breadth 57; greatest breadth of frontals 39; 

 anterior breadth of frontals 22 ; anterior breadth of nasals 



