224 Journal of tke F.M.S. Museums. [Vol. VII, 



Cranial measurements: greatest length. 70.9 172.0): 

 condylo-basilar length. 64.0 162.01 : palatilar length. 32.9 (32.5) ; 

 diastema, 15.0 14.7); upper molar row, including pm a 16. g 

 {16.5): interorbital breadth, 15.7 (15.3); postorbital breadth. 

 [8.] (18.4); zygomatic breadth, 48.7 (48.2) ; length of nasals, 

 22.4 122.71 ; breadth of combined nasals. 13.3 (13. 0) mm. 



For detailed measurements of the series see p. 226. 



Specimens examined:- Six. three from the type locality ami 

 three from Sodong Jerok, 3,900 feet, also on the Idjen Massif. 



The series obtained are all very uniform and differ very 

 markedly from that from Tjibodas. West Java, which we have 

 assumed to be the typical race in brighter general colouration. 

 the general hue being more brownish in the Tjibodas skin, 

 with the feet dark brown, not pure black, and the orbital ring 

 narrow. The greatest difference however, is in the tail, which 

 is ferruginous bay with a terminal black tip in the western 

 animal as in all others of the group which we have been 

 able to examine, though it should be noted that Hose 1 des- 

 cribes a specimen, presumably from Borneo, which appears 

 to agree closely with the above form, though other authorities 

 specifically state that the tail of the Boolean race is rufous 01 

 ferruginous with a black tip. 



The Penang race, on examination of a considerable series, 

 differs sufficiently from that inhabiting the mainland to receive 

 a name: — 



Petaurista petaurista penangensis, subsp. now 



Type : — Adult female (skin and skull), collected at Telok 

 Bahang, Penang Island, on 27th March. 1911 by E. Seimund. 

 Federated Malay States Museum Xo. 1413,11. Original 

 number 421 1. 



Diagnosis. External characters precisely as in P.p. mela- 

 notus from the south' of the Malay Peninsula but size smaller 

 and rostrum shorter and relatively broader. 



Dimensions. See table on page 226. 



Specimens examined. Three, all from the type locality. 



Petaurista petaurista terutaus, Lyon. 



Petaurista terutaus. Lyon, Proc. Biol. Soc. Washington. 

 xx, p. 17 (1907). 



This race was described by Mr. Lyon from a single speci- 

 men collected by Dr. W. L. Abbott in 1904. 



Though the island has been visited by us on several 

 occasions we never succeeded in obtaining specimens until 

 December 1916. In that month, however, considerable wood 

 cutting was going on in the island opening up vistas in jungle 

 and we were so fortunate as to' obtain three adults. 



Huse. Mammals of Borneo, p 41 (1S93) 



