58 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. X.XXI. 



SCIURUS SERUTUS, new species. 



7^yy;^,._Adult male (skin and .skull) No. 125025, United States 

 National Museum. Collected on Pulo Serutu, Karimata Islands, 

 Auo-ust 17, 1904, by Dr. W. L. Abbott. Original number, 3584. 



Characters. — A member of the ^Sch/rus luttatas o-roup, closely 

 resembling the small Sciurus aoris in color, but size about as usual in 

 the larger species. 



Color. — The color so closely resembles that of Sciurus aorls^^ as to 

 require no very detailed description. The upper parts are the same 

 coarse grizzle of black and pale buff. The under parts are, however, 

 somewhat brighter than in the related species, deepening to orange- 

 buff posteriorly; cheeks rather strongly suffused with buff'; lateral 

 stripes rather short and wide, the dark stripe slightly washed with 

 color of bell}". 



Skull and teeth. — The skull resembles that of Sciurus mttatus., but is 

 rather longer and narrower. Teeth not as large as in the Sumatran 

 animal. 



Measurements. — For external measurements see table, page 58. Skull 

 of tvpe: Upper length, 48.8; condylobasilar length, 42. G; basilar length, 

 30; palatilar length, 21; diastema, 11; zygomatic breadth, 28; inter- 

 orbital constriction, 16.8; breadth of brain case above roots of zygo- 

 mata, 21; mandi})le, 31; maxillary tooth row (alveoli), 9; mandil)ular 

 tooth row (alveoli), 8. 



Specitnens examined. — One, the type. 



3feasureme7its of Sciurus cdrhiiatir (ind Sriiinis serutus. 



"Type. 



a Miller, Smithsonian Miscell. Coll., XLV, p. 10, November 6, 1903. 



