362 On a new Rat from the Upper Nile. 
Of the known British species Hanseniella caldaria (Hansen) 
is a “hot-house” species; Scutigerella immaculata, 8. bi- 
scutata, S. spinipes, and Symphelella vulgaris are more or less 
common and of wide distribution, whilst Symphelella delica- 
tula and Scolopendrellopsis subnuda are also widely distributed 
but much more local. S. swbnuda, on account of its minute 
size, may easily be overlooked (and S. minutissima also). 
All of these seven species should be met with in one season 
by anyone wishing to collect and study the group. 
XLIV.—A new Rat of the Genus Mylomys from the 
Upper Nile. By Oxprintp THomas. 
(Published by permission of the Trustees of the British Museum.) 
Amone some Mammalia collected by Major Cuthbert Christy 
during his recent expedition to the Bahr-el-Ghazal, and 
presented by him to tle 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. alberii. 
Size rather smaller than in M. cuninghamei, the smallest 
of the described species, Colour above strongly lined pale 
buffy and black with ochraceous rump, the general effect 
paler than in dutescens and less ochraceous than in alderit. 
Sides more creamy buff. Under surface white, the hairs 
white to their roots in the type, but with a little pale slaty 
at the bases of the hairs in the paratype, which is, however, 
ratherimmature. 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 foramina comparatively 
narrow, not widely open as in dutescens. Bulle rather small. 
Molars larger than those of cuninghamet, but not equalling 
those of dutescens. 
Dimensions of the type (measured by the collector in the 
flesh) :— 
Head and body 135 mm..; tail 140; hind foot 34; 
par. 19: 
