170 Lyon — Descriptions of Four New Treeshrews. 



portion and tip generally blackish with a slight admixture of buff or 

 ochraceous buff; upper surfaces of feet ochraceous buff with the dark 

 bases of the hairs showing through ; eye ring, fairly well defined buffy ; 

 shoulder stripe, well marked, whitish. The rest of the series are essen- 

 tially like the type, but three of them are more tawny about the rump 

 and base of tail. 



Skull and teeth. — These show no special characters by which Tupaia 

 sincepis can be distinguished from T. malaccana. 



Specimens examined. — Six, the type and five others, all from the island 

 of Singkep. 



Measurements. — Head and body, 140; tail, 165; hind foot, 37; condylo- 

 basal length of skull. 36.5; zygomatic width, 20.5; width of braincase 

 above roots of zygomata, 16.5, maxillary toothrow (alveoli), 13. 



Remarks. — Tupaia sincepsis is very closely related to T. malaccana 

 from the Malay Peninsula. Specimens from the islands of Linga and 

 Sumatra appear to be rather intermediate between the two forms, those 

 from Sumatra being more like the Peninsular animal. The Linga speci- 

 mens resemble T. sincepsis in having a tawny color on the back, but 

 lack the darker tail. 



