Callosciurus adamsi (Kloss, 1921) . J. Str. Br. Roy. Asiat. Soc., 83:151.

TYPE LOCALITY: Malaysia, Sarawak, Baram River, Long Mujan, 150 mi. (241 km) up Baram River, 700-900 ft. (213-274 m) .

DISTRIBUTION: Lowlands and hills in Sabah and Sarawak, Borneo, below the range of orestes .

COMMENTS: Distinct from albescens; see Medway (1977:93). Member of the notatus species group, closely related to orestes . Chromosomes of "C. albescens " from Sabah by Harada and Kobayashi (1980) refer to either this species or C. orestes .