SCIENTIIIC RESULTS FROM THE MAMMAL SURVEY. 409 



sented to the British Museum by the Bombay Government in 1907 

 and 1908, are veiy different from those from other parts of India ; 

 and they may for the present be referred to R. r. alexandrinus. 



On the backs the fur is short and harsh, although not spiny ; the 

 bellies are smooth, being clothed with short and adpressed fur. 

 The dorsal colour is markedly paler than in any of the other Indian 

 specimens; it is a pale yellow brown or tawny, more or less heavily 

 lined with black, especially along the spine. The flanks lighten 

 gradually and pass, in the majority of the specimens, insensibly 

 into the belly ; the latter shows a conspicuous yellowish suffusion 

 and the ventral hairs have deep slaty bases. In a few of the 

 specimens, the ventral hairs (and consequently the bellies) are pure 

 white throughout; in these, the line of demarcation along the 

 flanks is distinct. In the normal dark bellied type, the feet are rusty 

 coloured above ; in the rarer white bellied individuals, the feet 

 are whitish. The tails are unicolored and more or less dusk}'. 

 The mammary formula is indifferently 2-3^10 or 3-2=12. The 

 following are the dimensions of the more important ; — 



Dark bellied — 



The skulls are a little smaller than in European alexandrinus, 

 the nasals appear to be slightly shorter and broader, while the 

 incisive foramina are a little longer relatively. 



Remarks. — The exact status of these rats cannot be settled with- 

 out further material. 



II. Rattiis mac'inillani, sp. nov. 



1916. Einmys rufescens var. with white underparts, Wroughton, 



Keport No. 20 (Chindwin Eiver), /. Bombay Nat. Hist. 



Soc, vol. xxiv, p. 307 (in part). 



Type.—K male (B. M. No. 15.5.5.226; Original No. 5972) 



collected by Mr. G. C. Shortridge and the late Captain S. A. Mac- 



millan, on 8th August, 1914, on the west bank of the Upper 



Chindwin Eiver opposite Hkamti, Upper Burma. 



Material examined. — Seven (4 j , 3 $ ), all from the type 

 locality (1 $ being, however, from the east bank of the river) 



