398 JOURNAL, BOMBAY NATURAL HIST. SOCIETY, Vol. XXVI. 



black, while those of the skulls of hhoiia were unstained, suggests 

 that possibly sikMmensis is addicted to a special diet at Hazimara. 



Jalpaiguri, Bengal (200') ? 



A skull (B.M. 15.9.1.155), labelled as belonging to the female 

 of a pair collected at this place, is clearly referable to siklimensis. 

 The two skins and the male skull (15,9.1.154) show the Jalpaiguri 

 animal to be a 10 mammeed form much like R. r. bhotia in char- 

 acter; and I do not think the skull .155 can belong to either skin. 

 Possibly some confusion in labelling has taken place. 



11. Rattus rattus Jvhyensis, subsp. n. 



1914. Mpimijs rufescens, var. with white underparts, Wroughton, 

 Eeport No. 14, /. Bombay Nat. Hist. Soc. vol. xxii., 

 p. 722; Report No. 16, Journ. cit., vol. xxiii., p. 474 ; 

 Report No. 20, Journ cit., vol. xxiv., p. 307 ; [Rattus) 

 Report No. 25, ibid, p. 771 (in part). 



Type:— A female (B.M. No. 16.3.26.57 ; Original No. 251) 

 collected on 29th March 1915 on the Chin Hills at a point 25 

 miles west of Kindat faltitude 600') bj^ Mr. J. M. D. Mackenzie ; 

 presented to the British Museum by the Bombay Natural History 

 Society. 



Material examined: — Chin Hills 10 (6 c? » 4 5 ) ; Kin, Lower 

 Chindwin, 3 (1 c? , 2 $ ) ; North Shan States :— Gokteik 15 (S s , 

 125) and Pyaungguang 13 (6 j , 7 $ ); Dry Zone : — Mount Popa 

 20 (11 cJ , 9 $ ) and Pagan 3 (1 ^ , 2 $ ) ; Pegu 5 (3 ^ , 2 $ ). Total 

 69 (31 cj, 38$). The whole of the material is due to the Mammal 

 Survey : — 



Description : — This is a bright coloured, red-backed and short 

 tailed race, with the auditory bullas considerably smaller than in 

 E. r. tatho7iensis described below. 



In the typical series from the Chin Hills, the fur is short, thin 

 and soft, being rarely mixed with soft spines or bristles. The dorsal 

 colour is rufous, more or less conspicuously lined with long black 

 hairs. The lines of demarcation along the flanks are sharply defined. 

 The belly is pure white or cream, the ventral hairs being light to 

 their bases ; in two or three specimens, a weak mid-ventral longitu- 

 dinal stripe formed b}^ slaty hairs is present. The feet are dirty 

 white. "The tail is unicoloured, dark brown, and its length averages 

 about 111 % of the head and body measurement. Even the youngest 

 specimens before me may be distinguished from R. macmillani, the 

 dusky species from the Upper Chindwin described below, by their 

 red backs and far lighter feet. The females have 12 mammjB. 



Specimens from the North Shan States — Gokteik and Pyaung- 

 gauug — closely resemble the typical series in all essential respects and 

 they have similarly short tails. In many of them the dorsal fur is mixed 



