196 On a new Dormouse from Northern Nigeria. 



XA^IT. — A new Dormouse from Northern Nigeria, presented 

 to the British Museum hy J. C. Fox, Esq. By GuY 

 DOLLMAN. 



(Published by permission of the Trustees of the British Museum.) 



Uraphi'urtis fo.ci, sp. n. 



A merliiim-sized species allied to Graphiurus lorrainp.us^ 

 Di)llm., from which it is distinguislied by its less richly 

 coloured coat and smaller teeth. 



Dimensions of body and hind feet greater than in lor- 

 raineus. General texture and length of hair as in the Welle 

 liiver form. Colour of dorsal surface dull greyish brown ; 

 general effect as in G. spurrelU, Dollm. Dark rings around 

 eyes not markedly developed. Cheeks greyish white, hairs 

 \vitli slate-grey bases and white tips. Backs of hands and 

 feet dirty white. Ventral surface of body slate-grey, washed 

 with white. Tail pale liver-brown, 



fSkuU ratiter smaller than that of lorroi?iens, witii narrower 

 nasals and interorbital region ; auilitory bullte less inflated 

 and cheek-teeth considerably smaller. 



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



Head and body 83 mm. ; tail 58 ; hind foot 13 ; 

 ear 15. 



Skull: greatest length 25*1 ; basilar length 18"7 ; condylo- 

 incisive length 22 ; zygomatic breadth 14"2 ; interorbital 

 constriction 3'7 ; squamosal breadth of J)raiii-case 11*5; 

 length of nasals 9"3; greatest width across nasals 2*8 ; 

 palatilar length 7'7 ; length of palatal foramina 2"5; length 

 of ujiper cheek-teeth 2'8. 



J/ah. Kabwir, Bauchi Province, Northern Nigeria. Alti- 

 tude 2500 feet. 



y]i/pe. Adult female. V>.^]. no. 3 3, 5.15. 1. Original 

 )iumt)er 58. Collected and presented by J. C. Fox, Esq. 



This Nigerian dormouse is distinguished from its nearest 

 ally, G. lurraineus, by its less richly coloured ])elage and 

 smaller cheek-teeth. The genus Ijas not hiiherto been 

 recorded from Northern Nigeria; G. hiie/i, Uocli., and 

 (i. crassicdvddtiis dorolhca', Dollm., both members of very 

 difterent groups, are the only other Nigerian s|)eeies, and 

 these do not appear to occur iKntli of the Southern Nigerian 

 boundary. 



