Tupaia gracilis Thomas, 1893 . Ann. Mag. Nat. Hist., ser. 6, 12:53.

TYPE LOCALITY: Malaysia, Sarawak, Baram Dist., Apoh River at base of Mt. Batu Song .

DISTRIBUTION: Borneo (except S.E.), west to Karimata Isl., Belitung Isl., and Banka Isl.; north to Banggi Isl.

ISIS NUMBER: 5301403009004003001.