330 



RODENTIA. 



This is a not uncommon species in the Kakhyen hills to the east of Bham6, 

 where it is associated with R. pruinosus, which is more prevalent. It constructs 

 its burrows among a rank and tall jungle grass, on the roots of which it is said to 

 live. It is known to the Chingpaws or Kakhyens as the Yewcron. 



Measurements of B. badius, Hodgson. 



Muzzle to vent 



Lengtli of tail .... 



„ of fore foot . 



„ of first finger 



„ of middle finger . 



„ of liind foot 



„ of first toe . 



„ of middle toe 

 Eye to eye, inner angle (calipers) 



„ to ear (calipers) 

 Ear to ear (calipers) 



Inches. 



7-10 

 2-40 

 1-10 

 0-12 

 0-51 

 1-32 

 0-30 

 )-54 

 0-75 

 0-77 

 1'05 



Rhizomts sinensis, Gray. 



BJiizomys sinensis, Gray, Proc. Zool. Soc. Lond. 1831, p. 95, et 111. Ind. Zool. ii. pi. xvi. ; Sclireber, 

 Siiugeth. 1843, vol. iii. p. 867; Swinhoe, Proc. Zool. Soc. 1870, p. 637. 



JRJiizomys deJcan, Schinz (in part), Syn. Mamm. 1845, vol. ii. p. 124. 



RUzomys vestitus, A. M. -Edwards, Nouv. Arch, du Mus. 1871, p. 93, et Rech. des Mammif. 1874, 

 p. 292, pi. xlvi. 



The fur is very thick and dense, easily reversible, fine and silky. The basal 

 portion is pure grey, and the tips are pale brownish with a rich shining lustre. The 

 brownish hue is most marked on the sides of the face below the ear, and on the 

 front of the head, but in the younger example the area of the sides of the head 

 and of the chin and throat to the side of the muzzle is grey, approaching to white. 

 The under parts are much the same as the upper. The claws of both feet are 

 strong and olive-brown. The foot-pads appear to be smooth. 



Inches. 



The body measures from muzzle to root of tail . . . . . 9'30 

 Length of tail 2*90 



Dr. Giinther obligingly had the skull of R. sinensis removed from the skin of 

 the larger of Dr. Gray's types of this species, and I have carefully compared it 

 with the figure of the skull of R. vestitus. The only perceptible difference that 

 it presents on the skull as figured by A. M. -Edwards is that the post-orbital 

 contraction is more marked, and that thus the temporal ridges are earlier confluent 

 than in R. vestitus, but this contraction is not carried to a greater degree than 

 occurs among skulls of R. pruinosus and the other species of Rhizomys. It 

 agrees with R. vestitus in the long continuous transverse suture formed by the 

 confluence of the nasal premaxillary and maxillary bones with the frontal, and 



