31 (j Mr. G. Dollman on 



This species is distinguislied from the allied form lor- 

 raineus by its larger size, paler colour, and smaller teeth. 

 Ihere are in the Museum collection five further specimens 

 referable to Gropliinrus spiirrelli, four collected by Dr. Spur- 

 I'ell at the ty])e locality and one from Sierra Leone. 



It is with pleasure that I associate this new species with 

 the name of Dr. 8purrell, to whom Zoology is already in- 

 debted for the discovery of many new and interesting West- 

 Atrican Mammalia. 



Graphiurus hoidulus, sp. n. 



A rather small yellowish-olive-coloured species, probably 

 allied to Uraphiurns spurrelN, described above. 



^kin-dimensions not markedly different from those of the 

 Gold Coast species. General colour of back bright yellowish 

 olive (olive-brown washed with cinnamon no. 1, 'Eepertoire'), 

 like that of ??i?c?'o?zs but purer and yellower in colour. Hairs 

 of back with slaty grey bases, bufly subterniinal rings, and 

 brownish tips. Flanks washed with yellowish buff, the buff 

 colour sharply defined against the white ol the ventral surface. 

 Muzzle and head similar in colour to back. Dark ocular 

 rintrs and markinjis on sides of muzzle rather better defined 

 than in sjjurrelii. Cheeks pure white; hairs with grey 

 bases and white tips. Backs of hands and feet white. 

 Entire underparts daik slate-grey washed over with pure 

 w hite. Tail like that of spurrtlli in colour ; in general form 

 the tail of this specimen, although apparently of the bushy 

 kind, exhibits a distinct tendency to become distichous. 



Skull smaller than that of spurrelli, but with larger cheek- 

 teeth. 



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



Head and body 88 mm.; tail 70; hind foot 18; ear 12. 



Skull: greatest length 2-4"9; basilar length 19 ; condylo- 

 basilar length 21"2j zygomatic breadth ll'Ll; interorbital 

 constriction 4'3 ; squamosal breadth of brain-case 12; 

 occipital breadth 10 ; length of nasals 9'5 ; greatest anterior 

 breadth across nasals 3'1 ; palatal length 10*1; width of 

 palate (inride vi^) 3*4 ; width across palate (outside m^) 5'7 ; 

 length of palatal foramina 2*7; postpalatal length 10*4; 

 bngth of ui)per toolh-row 3"3. 



Uah. Assobam, Bumba lliver, Camcroons. Altitude 

 2000 feet. 



Ti/pe. Adult male. B.M. no. 9. 10. 2. 21. Original 

 number D. 28. Collected by Mr. G. L. Bates on December 

 loth, 1908. 



