202 On neio Bats and Rodents from West Africa^ dtc. 



Uromys Stalkeri, sp. n. 



A member of the U. Bruijnii group. 



Size medium. Fur soft and fine, about 10 mm. in length 

 on the back, straight on the head and body, more woolly on 

 the rump. General colour above uniform cinnamon-brown, 

 scarcely perceptibly ticked or lined ; sides but little paler ; 

 lateral colour passing on to the edges of the belly ; the middle 

 line of the under surface from throat to anus, for a breadth 

 varying from \ to 1^ inch, pure white, the hairs white to their 

 bases. Head rather greyer, without special orbital or other 

 markings ; whiskers very numerous, black. Ears small, 

 brown. Upper surface of hands and feet dull whitish, 

 without darker metapodial patches. Tail of medium length, 

 very finely scaled (scales about 16-17 to the cm.); naked; 

 uniformly brown throughout. 



Skull with large, ovoid, convex brain-case and short muzzle; 

 nasals short ; interorbital region broad, flat, its edges sharp- 

 ened but not raised, continuous with the inconspicuous ridges 

 that pass on to the parietals ; interparietals large ; zygomatic 

 plate scarcely projected forward ; palatal foramina short, 

 evenly crescentic ; posterior nares widely opened ; buUse 

 small. Teeth of normal proportions. 



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



Head and body 135 mm. ; tail 137; hind foot 27; ear 16. 



Skull : greatest length 33'4, basilar length 27, zygomatic 

 breadth 17, nasals 10 x 3*7 ; interorbital breadth 5 8 ; brain- 

 case, length 16"7, breadth 14"5; interparietal 4'7x9*5; palate 

 length 15; diastema 9'2 ; palatal foramina 4*9x2; length 

 of upper molar series 6. 



Hah. Gira E., British New Guinea. Alt. 200 m. 



Type. Female. B.M. no. 4. 6. 7. 11. Original number 2G. 

 Collected 25th October, 1903, by Mr. W. Stalker. 



This species is distinguishable from its allies by its 

 proportionally large brain-case and small muzzle. The 

 narrow area of pure white along its under surface is also 

 characteristic. 



In the same locality Mr. Stalker obtained a number of 

 specimens referable to U. levipes, Thos. 



