\ 



A THIRD COLLECTION OF SIAMESE MAMMALS. 303 



where the hair is short and points towards the tip instead of having 

 the distichous arrangement of tlie adult. 



The adult male, which has been in spirit, generally agrees with 

 the adult female but has the head like the rump and lacks the long 

 black hair behind the ears. 



Both the small anterior premolars are absent in the female and ifr. 

 Oldfield Thomas, to whom I sent it for inspection, writes me that it is 

 his P. phipsoni : I think there is no doubt, however, that when contin- 

 ental specimens have been compared with topotypes of P. rordermanni 

 (Jentink) of Billiton Island we shall have to regard this flying-squirrel 

 as merely a local race of that animal. 



Measurements of male and female respectively: — Head and body, 

 111, 120* ; tail, 104,110* ; hindfoot, s.i. 23,21*; ear, 14,18» ( 13? ). 



Skull :— greatest length, 31.1, 31.0 ; condyle-basilar length 27.0, 

 26.5 ; basilar length, 25.5, 24.2 ; palatilar length. 13.1, 12.7 ; diastema, 

 6.2, 6.3 ; upper tooth- row (alveoli), 6.0, 5.9 ; median nasal length, 7.6, 

 6.7 ; greatest nasal lengtJi, 7.6, 7.2 ; greatest breadth of nasals, 4.5, 4.4 ; 

 interorbital breadth, 6.2, 0.7; cranial breadth. 17.5, 17.0 ; zygomatic 

 breadth 18.3, 18.0. 



23. Ratufa melanopepla peninsulae. 



Miller, Smithsonian Miscellaneous Collectiniis, 61, p 2-5 (1913). 

 1 c^ ad. Bang Nara, Patani, Peninsular Siam. 5 July 191G. 

 Messrs. Williamson and Smith's collectors [No. 2486]. 



Pelage much abraded and "bleached" brownish above. 

 For measurements see p. 312. 



24. Eatufa melanopepla phaeopepla. 



liatiija j/loifoprpla. Miller, Suiitiisnniiui ilisoi'llaneous Collections, 

 61, p. 25 (1913); Klos.s antea, p. 81 

 Two flat skins from Sai Yoke District above Kanburi, W. Siam. 

 January 1917. Collected by Mr. A. J. Irwin. [Nos. 2569-70]. 

 Colour brownish above. 



• By native collector. 

 VOL II, DEC. 1'-'17. 



