362 On a neio Ral from the Upper Nile. 



Of the known British species Hanseniella caldaria (Hansen) 

 is a "hot-house^' species; Scutigerella immaculata, S. bi- 

 scutata, S. spinipes, and Symphelella vulgaris arc more or less 

 common and of wide distribution, whilst Symphelella delica- 

 tula aud Scolupendrellopsis subnuda are also widely distributed 

 but much more local. S. subnuda, on account of its minute 

 size, may easily be overlooked (and S. miymtissima also)r 

 All of these seven species should be met with in one season 

 by anyone wishing to collect and study the group. 



XLIY. — A new Rat of the Genus Mylomys /rom the 

 Upper Nile. By Oldfield Thomas. 



(Piiblislied by permission of the Trustees of the British Museum.) 



Among some Mammalia collected by Major Cuthbert Christy 

 during his recent expedition to the Bahr-el-Gliazal, and 

 presented by him to t!ie National Museum, there occur two 

 specimens of a new Mylomys, which may be called 



Mylomys christyi, sp. n. 



Size comparatively small. Under surface white, as in the 

 large species M. alberti. 



Size rather smaller than in M. cuninghamei, the smallest 

 of the described species. Colour above strongly lined pale 

 huffy and black with ochraceous rump, the geueral effect 

 paler than in lutescens and less ochraceous than in alberti. 

 Sides more creamy buff". Under surface white, the hairs 

 white to their roots in the type, but wath a little pale slaty 

 at the bases of the hairs in the paratype, which is, however, 

 rath, r immature. Sides of nose, a line above eye, and back 

 of ears ochraceous. Hands and feet grizzled yellow. Tail 

 well-haired, dark brown above, buffy yellow on sides and 

 below. 



Skull rather smaller than that of M. cuninghamei, but 

 similar in general form. Palatal foraiflina comparatively 

 narrow, not widely open as in lutescens. Bullae rather small. 

 Molars larger than those of cuninghamei, but not equalling 

 those of lutescens. 



Dimensions of the type (measured by the collector in the 

 flesh) :— 



Head and body 135 mm. ; tail 140 ; hind foot 34 ; 

 ear 19. 



