MUS .1K8S00K. 15 



3. Mus ephippium, n. sp. 



All the woolly hairs are slate-colored near the base, 

 those of the upperparts having dusky brown tips, the 

 other ones bright yellow tips, but on the fore-back they 

 are entirely bright yellow. There are but a few brown 

 colored bristles; more frequent are the spinous hairs on 

 the back , brownish near the base , dark brown tipped. 



Numerous whiskers, dusky, rather short. Ears rather 

 short, rounded. Tail much shorter than head and body, 

 very hairy. Hind foot small ; thumb and fourth toe attached 

 rather high up : the two middle toes of the same size : 

 the very little thumb of the fore-foot is armed with a small 

 nail : the two middle fingers are of the same size. Claws 

 rusty. Upper cutting-teeth orange , lower ones yellowish. 

 One specimen. 



m. m. 



Head and body 140 



Tail 110 



Ear ... • 12 



Hind foot 24 



Length upper molar series 4.5 



Distance between incisor and first upper molar. 9 



» » » » » lower » 4 



Hab. Sumatra. 



This hitherto undescribed species was labeled ephippium 

 by Temminck. 



4. Mus jessook^ n. sp. 



n. i. jessook or jêsuk. 



Above chestnut, underparts white. Hairs soft to the 

 touch , slate-colored near the base. Here and there are 

 some longer white flexible spinous hairs, a few of which 

 are tipped Avith chestnut. Lips , chin , cheeks , throat , 

 chest, belly, anus and inside of legs, white. 



Tail nearly as long as head and body , brown , with 



Notes from the Leyden 31useum , Vol. II. 



