neiv A/iicun Dortnu:e. 317 



The colour of this species is so unlike that of all the other 

 AVest-Afiicau forms tliat it is readily distinguished from it3 

 near allies. In aildition to these colour-differences the cranial 

 and dental characters serve to distinguish this Cameroon 

 species from the Gold Coast dormouse, (Jrap/tiurus spurrelli. 



Graphiurus ansorgei^ sp. n. 



Allied to G. murinns, Desm,, lighter in colour and with 

 no dark markings on sides of muzzle. 



Size and general proportions rather less than in niurinus. 

 Fur quite similar to that of the other medium-sized Graphi- 

 iirus. General colour of upper surface light ashy grey 

 (between ashy grey no. 1 and smoke-grey no. 1, ' Repertoire 

 de Couleurs '). Individual hairs of back dark slaty grey 

 with long light greyish tips ; a number of longer hairs, with 

 lather darker tips, evenl}' scattered over the whole of the 

 dorsal surface. Flanks similar in colour to back, the grey 

 tint gradually fading into the whitish colour of the ventral 

 surface. Face and top of head rather lighter than back. 

 Eyes surrounded with narrow blackish-brown rings. }^o 

 tlark marks on sides of muzzle, in front of eyes, such as 

 occur in viurinus and the allied forms. Cheeks white ; hairs 

 dark slate-coloured with long white lips. Backs of hands 

 and feet white. Under parts of body slate-grey, overlaid 

 with white. Tail similar to that of murinus, rather lighter 

 in colour and with the extreme tip whitish, but not to such a 

 marked extent as in the Tanganyika species, G. microtis, 

 !Noack. 



Skull smaller than that of murinus, in general dimensions 

 more resembling that of yriselda, but not having the pre- 

 maxillae prolonged back beyond the nasals. Nasals fairly 

 long, intermediate in length between those of murinus and 

 yriselda. Cheek-teeth rather small. 



Dimensions of the type (measured in the flesh) : — 



Head and body 90 mm. ; tail 90 ; hind foot 16 ; ear 15. 



Skull : greatest length 2Q ; basal length 22"6 ; condylo- 

 basal length 2-i'7; basilar length 20; condylo-basilar length 

 22; zygomatic breadth 14*4; interorbital constriction 4; squa- 

 mosal breadth of cranium 11"6 ; greatest length of nasals 

 10 ; greatest breadth across nasals 3*2 ; palatal length 10"7 ; 

 palatilar length 8*1 ; width of palate (inside m^) 3 ; width 

 across palate (outside m^) 5 ; length of palatal foramina 3'3 ; 

 postpalatal length 11*8 ; length of upper molar series 3. 



Hub. Tala Kilau, Dongwenna, Mossamedes, South Angola. 

 Altitude 3000 feet. 



