526 MR. W. L. SCLATER ON SOME INDIAN MURID.E. [June \7, 



collection, and so far as it goes confirms Mr. Thomas's identifica- 

 tion. The measurements (see table, p. 536) correspond very closely 

 with those of the Munipur examples mentioned by Mr. Thomas in 

 his description ; the type also agrees very well in regard to the 

 great distance between the upper incisors and the molars and the 

 paleness and forward direction of the incisors, which are the points 

 described by Mr. Thomas as specially characteristic of the Munipur 

 skulls. 



15. Mus coNcoLOR, Blyth, J. A. S. B. xxviii, p, 295 (1859). 



This species is somewhat intermediate in size between the Eats 

 and Mice ; it should, however, be considered rather as a small Rat 

 than as a large Mouse, since the hind pad of the hind foot is elongate 

 as in the Rats, not rounded as in the Mice. 



This species does not seem to have been described since the 

 original description by Blyth inl859 ; it may therefore be as well to 

 give some additional particulars and measurements which may be 

 useful to students of Indian Mammalogy. 



The fur is largely composed of flattened spines with long black 

 hairs and fine fur intermixed ; the tips of the spines are reddish in 

 colour, and the hairs, which are longer, are black, so that the colour 

 above is brownish : beneath, the spines are not so numerous nor are 

 their tips red, the long black hairs are absent, and the general colour 

 is dark grey, considerably lighter than the back. 



The ears are clothed without rather thickly (for a Rat) with brown 

 hairs and within with the usual white glistening hairs ; they are 

 rounded and of moderate size, beut forward they hardly reach the 

 eyes. 



The feet are not remarkable in any way ; the usual 5 pads are 

 present on the fore feet and the usual 6 on hind feet ; the pads on the 

 hind feet are rather small, and the proximal one, as mentioned above, 

 is elongate ; the soles are dark-coloured. 



The tail, which is slightly longer than the head and body, is quite 

 uniform, and provided with the usual rings, about four to the tenth 

 of an inch. 



The mammse, in the only specimen in which they could be made 

 out, were 8 in number — two pairs of inguinal, two pairs of pectoral. 

 The CEecum is rather large and measures about 0'67 inch. 



There are examples of this species in the Museum from the 

 Schwegyeen District of Pegu, from Tenasserim, and from Malacca ; 

 and a very closely allied species, Miis ephippium, Jentink, has been 

 recorded from Sumatra and from Mt. Kina Balu in Borneo. 



The skull of Mus concolor resembles that of 2Ii(s rattvs rufescens 

 in almost every particular : the interparietal of the latter is perhaps 

 somewhat narrower. 



If, however, the skull of Mus concolor be compared with that of 

 Mus urbanus, the former will be found to be considerably longer 

 and narrower in i>roportion, and also to possess a much shorter 

 anterior palatine foramen, barely reaching the level of the front ends 



