1890.] MR. W. L. SCLATER ON SOME INDIAN IdVRlDJE. 533 



quarter being chestnut. The body beneath, including the chin, 

 throat, and sides of the muzzle, is white without any slate-coloured 

 base ; the two colours are abruptly separated from one another. 



The sides of the snout from which the whiskers spring are con- 

 siderably swollen ; the ears are large, rounded, and covered with 

 very scanty short single hairs, so that unless looked at carefully 

 they appear to be naked : when bent forward they easily reach the 

 eye. 



The tail is very long, much longer than the head and body ; the 

 basal portion is comparatively bare : the distal portion is covered 

 with gradually increasing quantities of hair, those at the tip of the 

 tail reaching a length sometimes of "20 of an inch ; the tail is quite 

 uniformly coloured, it is not lighter above than below. 



On the fore feet there are four well-developed toes, all clawed ; 

 the first digit is represented by a mere stump springing from the 

 inner proximal sole-pad and is provided with a liat nail ; the toes 

 are all much swollen distally by the great development of the toe- 

 pads, which is very well shown in Peters's plate (I. c.) ; in the hind 

 foot the first digit is very stumpy, and only reaches to the level of 

 the base of the division between the second and third toes, it is pro- 

 vided with a flat nail ; the toe-pads are swollen in the same way as 

 are those of the fore feet ; the sole-pads are large and well-deve- 

 loped, and the proximal inner one is oblong and rat-like. 



In the only specimen in which the mammae could be made out, 

 they were four in number, and all situated abdominally on either 

 side on a level with the femur ; no traces of pectoral or inguinal 

 mammae were to be found ; whether this is a constant character or 

 not must be decided bj' the examination of more specimens. 



The skull of Chiropodomys (Plate XLV. fig. 6) resembles that of 

 Vandeleuria more than that of any other Indian Mouse ; in general 

 appearance it is very wide and short, its breadth being greater than 

 that of any other Indian Mouse or Rat. The nasal bones are so 

 short that the nasal processes of the premaxillae reach back to a 

 considerable distance behind their posterior ends ; this is also the 

 case in Vandeleuria, but it is not nearly so marked a feature. 



The interparietal is crescent-shaped, with an anterior median pro- 

 jection between the two parietals. The antorbital plate is perfectly 

 straight and perpendicular, as in Vandeleuria and 3Ius erythrotis ; 

 below the anterior palatine foramina are very short, shorter than in 

 any other Indian Eat, they are also rather broad, and present a 

 kidney-shapped appearance. The posterior nasal opening is very 

 wide, almost as wide as the hard palate ; it is equal to more than 

 half the length of the anterior palatine foramen, while in Vande- 

 leuria its width is very much less than half the length of the 

 anterior palatine foramen. 



The dentition of this species (Plate XLV. fig. 11) appears to be 

 somewhat intermediate between that of Vandeleuria and typical 

 Mils. The anterior upper molar in Mus consists of three central, 

 three external, and two internal cusps, the posterior internal cusps 

 being absent ; in Vandeleuria there are eight cusps as in ]\Jus, but 



Proc. Zool. Soc— 1890, No. XXXVI. 36 



