258 On new West-African Rodents. 



black hairs, those on the hind feet entirely covering the 

 claws. Under surface of body white, faintly tinted with 

 buff"; hairs of belly white throughout. Hairs on throat pale 

 grey tipped with bufF. Chin ashy grey. Hairs on under- 

 side of interfemoral membrane dark brownish, strikingly 

 different from the white hairs of nigrensis. Tail like that of 

 nigrensis, basal half brownish speckled with buff, apical 

 region brownish black. Caudal scales as in fraseri and 

 allied forms. 



The skull of the type is unfortunately badly injured in the 

 nasal and maxillary regions. Cheek-teeth large and massive. 

 Auditory bullee exceptionally large and inflated. 



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



Head and body 330 mm. ; tail 244 ; hind foot 60 ; 

 ear 35. 



Skull : zygomatic breadth 42 ; occipital breadth 25 ; 

 interorbital breadth (anterior) 19 ; interorbital breadth 

 (posterior) 16 ; postpalatal length 23*5 ; greatest diameter 

 of auditory buUaj 14 ; length of upper cheek-teeth 13. 



Hah. Bibianaha, 60 miles west of Kumasi, Gold Coast. 

 Altitude 700 feet. 



T'ljpe. Old female. B.M. no. 11. 6. 2. 8. Original number 

 80. Collected on March 7th, 1911, by Dr. H. G. F. 

 Spurrell. 



This handsome species is readily distinguished from the 

 allied members of the genus by the entire absence of the 

 black ocular and occipital markings. In addition, the bright 

 buflf-coloured tint on the back and shoulders renders this 

 Anomalurus quite distinct from all the other members of the 

 fraseri group. 



Dr. ISpurrell is to be congratulated on the discovery of 

 this fine new species, the type of which he has presented, 

 together with a number of other rare and interesting West- 

 African mammals, to the British Museum. 



Gricetomys gamhianus olivice, subsp. n. 



A pale-coloured form, closely related to C. g. dicJirurus, 

 Osg. 



In size and general proportions rather larger than 

 diclirurus. General colour of upper surface pale butfy grey, 

 very much paler and lighter in colour than in the southern 

 race. Flanks rather paler than back, gradually fading into 

 the light greyish white of the ventral surface. Hairs of back 

 with pale grey bases, the colour darkening towards the 

 terminal halves ; tips buff-coloured or brownish. Inter- 

 spersed are a number of long, rather harsh, black hairs, 



