^fummal<^ from Mount Rinnenzori. 143 



9. Dasymys montaniis, sp. n. 



A very long-haired species, with short taih 

 Size meclium. Fur very long and fine; the ordinary liair-j 

 of the back about 15 nun. in length. General colour abov(! 

 uniformly finely speckled mummy-brown, tlio light rings on 

 the hairs near clay-colour. A number of the longer liairs 

 with a greenish iii lescence. Sides but little paler than back. 

 Under surface bluish grey, the slaty bases of the hairs little 

 hidden by the dull pale drab tips. Ears large, black, con- 

 trasting with the general brown colour. Upper surface of 

 hands and feet pale brown, the digits lighter. Tail practically 

 naked, the scales quite unhidden, blackish throughout. 



Skull shorter and broader and the zygomata more squarely 

 expanded anteriorly than in other species. 



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

 Head and body 137 mm.; tail 105; hind foot 27; ear 19. 

 Skull : length of upper molar series 7*3. 

 Another skull measures: — Greatest length 35; basilar 

 length 30-6; greatest breadth 21-2; nasals 12-3 X 43; 

 palatilar length 17'8 ; length of upper molar series 7-1. 

 Ilab. Ruwenzori East, 12,500'. 



Type. Female. B.M. no. 6. 7. 1. 79. Original number 255. 

 Collected 30th January, 1*J06, by Douglas (Jarruthers. 



I refer four specimens to this species, two of them of a 

 normal colour and two apparently melanoid, rather darker 

 than de W intones D. incomtus fuscus. Unfortunately the 

 skulls of the normal-coloured specimens are much damaged, 

 but I do not think there is any reason to suppose the 

 blackish specimens are different from the brown ones. 



D. montanus is readily distinguishable from all otiier 

 species by its long fur and short tail. 



10. I^asymys medlus, sp. n. 



A grey species allied to D. BentleycB. 



Size medium, rather larger than in D. Bentleyce. Fur 

 comparatively coarse and shaggy; hairs ofback about 12-13 mm. 

 in length. General colour above greyish " hair-brown," 

 greyer on the head and fore-back, warmer and browner on 

 the rump ; darkened throughout by the black ends to the 

 longer hairs. Sides greyer, passing gradually into the grev 

 of the under surface, where the tips of the hairs are dull 

 greyish white, their slaty bases showing through. Ears 

 well-haired, greyish brown, not markedly darker than the 

 general tone. Upper surface of hands and feet pale brown. 



11* 



