26 ON MAMMALS FROM EAST-SUMATRA. 



Rodentia. 



26. P te r o my s nitidu s Geofi'roj. 



Tandjong-Morawa. n. i. Gurupung. 



There are in our Museum specimens from Sumatra, Ma- 

 lacca, Borneo and Java. 



Besides skulls , unmistakebly belonging to this species , 

 there is in Dr. Hagen's collection a skin , without skull , 

 which I refer with some doubt to this species. It is appa- 

 rently a young individual , as the feet are too large in pro- 

 portion to the rest of the animal. Head , upperparts , tail 

 and feet are black with a reddish tinge , underparts brown- 

 ish red. As there is only a single species of Pteromys 

 known as inhabiting Sumatra , viz. : Pteromys nitidus , and 

 as Dr. Hagen collected this species too in Tandjong-Morawa, 

 so I regard his young specimen as representing a black 

 variety of Pteromys nitidus Geoffroy. Length of head and 

 body 280 mm., length of tail with tuft 440 mm., length 

 of hind foot with claws 57 mm. 



27. Sciuropterus h a g e ni n. sp. 



Deli. 



This new species is a good deal larger than Sciuropte- 

 rus setosus Temminck {Sciuropterus pearsonii Gray) from 

 Sumatra, nay than any other Sciuropterus-sipecies from the 

 Malayan Archipelago and thus at first sight is distinguish- 

 ed by its size. Length of head and body. . . 313 mm. 

 » » tail with tuft. . . . 245 



•» » hindfoot 45 



» » skull 54 



» » nasals 16 



» » palate 25 



» » upper molar series. 11 

 Width at zygomatic arches . . 34 

 In the upper molar series the small first premolar is 

 present. Incisors orange colored. 



Notes from the Leyden Museum , "Vol. XI. 



