Mammals from the Upper Nil '\ 451 



even in that all the liairs are grey at the base. Sunclevall'a 

 macro/ f pis, also from Kosoires, must resemble the present 

 species very closely in general colouring, lie describes it as 

 " i>upra fulvescenti-murinus, lateribus magie flavescens, sub- 

 tus albus, liuiite definito." The dimensions he gives, how- 

 ever — viz. : hind foot 27 and length of skull " ad suturam 

 posticam ossia transversi 32 mm.," — indicate a markedly 

 larger animal, while the character on which the name is based, 

 viz. the size of the caudal scales, is certainly not found in 

 the present animal, in which these scales are less than half the 

 size of those in viacrolepis^ 



[iOt) Arvi'canthis testicularis, Sund, 

 103, IGO, 161, 162, 163. Khartoum, Sudan. 



(27) Arvicanthis ruhescenSj Wrought, 

 c? . 102, 158, 159. Mongalla, Bahr-al-Ghazal. 



(28) Thamnomys macmillani gazelloBf Thos. 

 ^ . 167. Tembura, Bahr-al-Ghazal. 



(29) Dasijmys orthos, Hell. 

 S . 134. Mongalla, Bahr-al-Ghazal. 



(30) Jaculus gordonij Thos. 

 105, 175-202. Khartoum, Sudan. 



(31) Thryonomys swinderianuSy Temm. 

 ? . 119. Akanda, Bahr-al-Ghazal. 



(32) Procavia butlert, sp. n. 



A fair-sized dassie, with a dark face, indistinct black dorsal 

 mark, and buffy-grey abdomen. 



Hair short (25 mm.) and rather harsh. General colour 

 above " wood-brown," more fulvous on the flanks; face dark, 

 black-brown, minutely grizzled with white ; below pale bufFy 

 grey. Individual hairs of back basally very dark brown 

 (10 mm.), remainder (15 mm.) buffy white with a black tip. 

 l)orsal spot small, not well marked, black. Hands and feet 



Length of hind foot 63 mm. 



Dimensions of skull : coiidylo-inclsive length 93 ; basilar 



