Vol. XIV, pp. 33-34 April 5. 1901 



PROCEEDINGS 



OF THE 



BIOLOGICAL SOCIETY OF WASHINGTON 



A np:w squirrel fjiom borneo.* 



BY GERRIT S. MILLER, Jk. 



Tlie United States National Museum contains two specimens 

 oF the Bornean squirrel commonly referred to jSciurus tenuis, 

 one taken l)y Mr. A. Everett, the other by Mr. Charles Hose. 

 Externally they closely agree with true Sciuriis tenuis, an . 

 animal which was originally described from material collected 

 at Singapore. The skulls, however, are readily distinguishable 

 from those of the Singapore squirrel, and show that the Bor- 

 nean form, though closely related, is worthy of recognition by 

 name. It may be called: 



Sciurus parvus sp. nov. 



Tyiw. — Achilt male (skin and skull) No. 84,509 United States National 

 Museum. Collected at Nulu, Sarawak, Borneo (altitude 1000 feet) in 

 October, 1894, by Charles Hose. 



Characters. — Externally similar to Scivrns tenuis Horsfield, though 

 underparts perhaps less tinged with buff; skull slightly larger than that 

 of /8. tennis, the braincase disproportionally large and deep. 



Color. — The color so closely resembles that of Sciurus tenuis that no 

 detailed description is required. In the Bornean specimens the belly is 

 less washed with buff than in the topotypes, but the difference may be 

 seasonal, as the former were taken in summer and autumn, the latter in 

 spring. 



Skull and teeth. — Viewed from sbove the skull of Sciurus parvus differs 

 from that of S. tenuis in its more inflated, globose braincase. The dif- 

 6— Biol. Soc. W^ash. Vol. XIV. 1901. (33) 



