KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 60. N.O 6. 



19 



Skull measurements : 



9 

 Vo. 4880 



9 Type 

 No. 24 



Length of last upper molar 



Breadth of last upper molar 



Length of p' 



Length of p s 



L«ngth of p 4 and three upper molar together 



Breadth of pa'ate between p 3 



Breadth of palate between m l 



Length of p a 



Length of p 3 



Length of three lower molars 



2,6 



3,9 



5,8 



4,3 



11,9 



18,2 



15,7 



6,4 



6,2 



9,8 



2,3 



3,6 



5,8 



4,4 



12,2 



18,0 



15,5 



5,8 



6,0 



9,8 



The teeth are somevvhat different in the tvvo adult specimens as will be scen 

 by the follovving notes. In specimen No. 4889 the middle incisor is provided with 

 8 'ridges' while on both sides of the jaw the outer incisor has 10. The canine has 

 6 cusps. The anterior of these cusps is really divided into two cusps. Of all the 

 cusps the second is the highest and it projects a considerable distance above the 

 other which decrease in size posteriorly. On the first premolar in the upper jaw 

 there are 4 cusps when viewed from the side, but when viewed from above there 

 are both postero-internal and posterio-external cusps on the posterior part of the 

 tooth. The second premolar is 5-cuspidate of which a single small cusp is placed 

 anteriorly. 



In the type specimen (orig. number 24) the middle incisor has 8 'ridges' on 

 the right side of the jaw and 7 on the left. The outer incisor has 9 'ridges' on 

 each side of the jaw. The canine is of exactly the same shape as in specimen 4889 

 as is also the case with the first premolar. The second premolar reminds of that 

 one in specimen 4889 but the postero-internal cusp shows intendence to be divided 

 into two smaller cusps. 



12. Tupaia longipes salatana Lyon. 



Proc. U. S. Nat. Mus. vol. 45, 1913, p. 77. 



No. 90. £ Long Pangian, Boelongean, Eastern Borneo 3 % 1914. Head and body: 200 mm. Tail: 191 

 mm. Hindfoot: 51 mm. Ear: 12 mm. — No. 103. § Long Pangian, Boelongean, Eastern Borneo 1? /i 1914. 

 Head and body: 215 mm. Tail: 216 mm. Hindfoot: 49 mm. Ear: 16 mm. 



The discolor-group as defined by Lyon in his excellent Monograph of the 

 Tupaiidce is represented in Borneo by two allied forms, viz. T. longipes longipes 

 Thos. from Northwestern Borneo and T. longipes salatana Lyon from the South- 

 eastern and Eastern parts of the island. In the original description Lyon says about 

 the latter form that it »differs from the northern race in having more contrast in 

 colour between anterior and posterior portions of back, more rufescent on the shoul- 

 ders than in T. 1. longipes and less than in T. disrolor (from Bänka) ; general effect of 

 lower back and tail is much like clove brown, while in the northern race it is more 



