OLDFIELD THOMAS AND E. C. WEOUGHTON— MAMMALIA. 505 



proportions, shape of skull, and number of mammae ; but it differs by its softer, more 

 buffy fur and longer palatine foramina. In Mus carillus, otherwise allied, there are 

 only 1 — 2 = 6 mammae. 



[This was an extremely common Mouse on lluwenzori and was obtained as high as 

 12,500 ft. At this altitude it was found only in the dry caves and rock-shelters. — 

 R. B. W.] 



60. Mus UNIVJTTATUS Peters. 



d . 182. 2 . 183. North Ruwenzori. 



d . 178. Mpanga Forest, Fort Portal. 5000 ft. 



2 . 185. Eturi Forest. 2500 ft. 



2d , 22 in spirits. Between Mawambi and Avakubi, E. Congo Forest. 

 [These Mice were met with only in forest-country and did not appear to be 

 uncommon. — R. B. W.] 



61. Mus UNIVITTATUS LUNARIS Thos. 



? . 217, 240, Mubuku Valley, E. Ruwenzori. 6000-8000 ft. 



General characters of the typical western M. unimttatus, but size smaller and colour 

 more olivaceous, not turning rufous on the rump, which is blackish-olivaceous. Belly- 

 hairs greyish tipped with buffy ; a line down outer edge of thighs also butfy. Dorsal 

 streak not sharply defined and not extending on to neck and head. Upper surface of 

 hands blackish-brown, of feet rufous-brown. Tail practically naked, black above, 

 rather lighter below. 



Skull similar to that of true M. uniuittatus, but smaller and lighter throughout. 

 Molars decidedly narrower. 



Dimensions of the type (measured in flesh) : — 



Head and body 108 mm. ; tail 115 ; hind foot 25 ; ear 17. 



Skull: greatest length 32; basilar length 24; greatest breadth 15"3 ; nasals 13; 

 interorbital breadth 5'2 ; breadth of brain-case 14; palatilar length 13'2; palatal 

 foramina 6 ; length of upper molar series 5T. 



T7/pe. Old female. B.M. no. 6.7.1.137. Original number 217. Collected 2nd 

 January, 1906, by Mr. Douglas Carruthers. 



[This was a rare species on Ruwenzori and only two examples were obtained 

 during many months' continuous trapping; these were caught in the forest-zone. — 

 R. B. W.] 



62. Mus ALLENi Waterh. 



$ in spirits (skinned out). Between Mawambi and Avakubi, E. Congo Forest. 

 ? in spirits. Between Mawambi and Avakubi, E. Congo Forest. 

 VOL. XIX. — PAET V. No. 66. — March, 1910. 3 x 



