1918.] H. C. Robinson & C. B. Kloss : Sciuridae. 215 



V-. prevosti nyx (Miller). 



Proc. U. S. Nat. Mus., XXXIV, p. 638 (1907). 



Typical locality. — Pulau Rupat. East Sumatra. 

 Type. — In United States National Museum. 



g^. prevosti navigator (Bonhote). 



A7in. Mag. Nat. Hist., (7), VII, p. 171 (1901). 



Typical locality. — Sirhassen, Natuna Islands. 

 Type. — In British Museum. 



h^. prevosti mimelus (Miller). 



Proc. Acad. Sci. Washington, II, p. 18 (1900). 



Typical locality. — Pulau Wai, Tambelan Islands. 

 Type. — In United States National Museum. 



i^. prevosti mimiculus (Miller). 



Loc. cit. supra, p. 219. 



Typical locality. — Sainte Barbe Island, South China Sea. 

 Type. — In United States National Museum. 



The three preceding races are placed apart from the other forms of 

 prevosti and are perhaps not in their proper sequence. They are verj^ 

 dwarfed forms inhabiting small islands but there is no reason to suppose 

 that they are of any higher value than the other races listed. 



Callosciurus vittatus. 



a. vittatus vittatus* (Raffles). 



Trayis. Linn. Sac, XIII, p. 259 (1822). 



Typical locality. — Bencoolen, West Sumatra. 

 Ty2)e. — In British Museum. 



b. vittatus saturatus (Miller). 



Proc. U. S. Nat. Mus., XXVI, p. 453 (1903). 



Typical locality. — Pulau Mansalar, off Tapanuli Bay, West Sumatra. 

 Type. — In United States National Museum. 



c. vittatus pretiosus (Miller). 



Proc. U. S. Nat. Mus., XXVI, p. 454 (1903). 



Typical locality. — Pulau Bangkaru, Banjak Islands, West Sumatra. 

 Type. — In United States National Museum. 



* Sciurus vittatus tarussanus, Lyon {SmitTis. Misc. Coll. XLVIII, p, 279 ; 1907) from 

 Tarussan Bay, West Sumatra, is a pure synonym of this form. 



