1906.] C. B. Kloss: Rodents of the Malay Peninsula. 25! 



r>'/)^ :— Sub-adult male (skin and skull), F.M.S. Mus. No. 

 479/15. Collected on Bukit Kutu, Selangor, 3,400 ft., on 22nd 

 August, 1 915, by C. Boden Kloss. 



PETINOMYS VORDERMANNI. 



Sciuropterus vordermanni, Jentinck, Notes Leyden Museum, 

 xii, p. 150, pi. vii, tigs 13 and 14 (1890); Willink, Natuurkundig, 

 Tijdschrift Nederlandsch-Indie, LXV, p. 233 ; Lyon, Pioc. 

 U. S. National Museum xxxi, p. 593 (1906). 



P. vordermanni, which was described from a single speci- 

 men obtained from Billiton Island by Dr. A. Vordermann 

 belongs to a genus characterised by a fairly short rostrum and 

 very large, but low and flattened, bullae. 



The following is the description of the type specimen, an 

 adult male in (spirit): — 



" Hairs of back black, each hair with a terminal chestnut 

 band; sides of parachute bordered with pure white; under 

 surface of body and of parachute pure white, cheeks and sides 

 of neck with a brownish orange tinge. Hairs of tail of a fine 

 chestnut, lighter towards the base of the tail. Generally the 

 hairs are very soft and rather long. 



The tail is partially distichous, namely, only its under side 

 is distichous. All the hairs of the tail from its root to its tip 

 are exactly of the same length. 



No cheekbristles, nor bristles at the base of ears. 

 Whiskers black." 



Young animals of the Sciuropterus group are generally 

 blacker and duller above than adults and the Selangor example 

 differs from the type in having the hairs of the upper surface 

 tipped with ochraceous-tawny rather than chestnut, while the 

 pelage adjacent to the edges of the membranes is clear black 

 for 3 or 4 millimetres and in the same areas on the underside 

 the base of the hairs are blackish with the terminal portions 

 buffy white. The hairs of the tail are, again, vinaceous buff 

 at the base, where they are a little shorter than on the distal 

 portion, rapidly darkening to clove-brown: the tip is rounded; 

 as in the type the tail is almost bushy above. In other 

 respects the colour of the two animals appears to be similar. 



The immaturity of the specimen is shown by the teeth, of 

 which pm^ and the last molar, though up, are not extruded 

 but the unduly long ear and short nasals possibly indicate that 

 when better material is available we may be able to distinguish 

 a Malay Peninsula form. The nasals somewhat resemble 

 those of P. setosHs, as figured by Jentinck {loc. ciL, figs 5-6), but 

 in all other respects the skull eminently resembles his illustra- 

 tion of P. vordermanni. 



That the dimensions of the three examples may be 

 compared with each other they are all given here. 



