482 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxvi. 



SCIURUS PENINSULARIS Miller. 



1903. Sciurus peninsularis Miller, Smiths. Misc. Coll., XLY, p. 10, Nov. 

 6, 1903. (Type-locality Pahang.) 



Six squirrels of the cittatus group from Pulo Bulan are referable to 

 Sciurus peninsulcms Miller. This is the same species that I have else- 

 where called Seiiaiis vittatus vittatus."' 



For measurements see table, page 483. 



RATUFA BULANA, new species. , 



Type.—Skm and skull of adult female, Cat. No. 144412, U.S.N.M., 

 collected on Pulo Bulan, Ehio-Linga Archipelago, March 23, 1907, 

 by Dr. W. L. Abbott. Original number, 5130. 



Diagnostic characters. — Very similar to Ratufa insigiiis Miller,'^ 

 from Pulo Sugi, but differing in having the naso-frontal suture 

 shorter and the foramen leading from the orbital fossa into the pos- 

 terior nares distinctly smaller. 



Color. — Type: General effect of uj^per parts of body Isabella 

 color ; posterior portion of upper part of head same, but finely griz- 

 zled by lighter annulations of similar color of the hairs; anterior por- 

 tion of upper surface of head dark hair brown, .slightly and finely 

 grizzled with whitish; outer surfaces of thighs, forelegs, and a narrow 

 line along sides of body russet ; tail generally similar in color to the 

 back ; the hairs both above and below with lighter bases and the under 

 side of the tail in the middle line with short appressed cream-colored 

 hairs; under parts of body, throat, chin, inner side of fore and hind 

 legs and sides of head beneath ears whitish ; upper surface of hands 

 and feet Avhitish, but irregularly suffused with a bright russet color, 

 especially about the toes; sides of head and nose whitish, but dark- 

 ened b}' brownish tips to the hairs; ears in general blackish brown, 

 but with many lighter hairs on the inside. 



Series: The series of Ratufa huJana is quite uniform in color and 

 none of the specimens depart much from the color of the type. One 

 specimen, an adult female, Cat. No. 144408, U.S.N.M., is rather 

 lighter in color, being generall)' clay-color above. 



Skull and teeth. — The skulls of Ratufa hulana differ from those of 

 R. insigiiis, its nearest ally, in two very con.stant features, the rela- 

 tively short naso-frontal suture and the small size of the foramen 

 leading from the orbital fossa into the posterior nares. In R. insighis 

 the nasals taken both together have an hourglass constriction just 

 posterior to the middle, whicli is lacking in R. hulana owing to the 



"Smiths. Misc. Coll., XLVIII, p. 278, Feb. 4, 1907; Proc. U. S. Nat. Mus.. 

 XXXI, p. 653, Jan. 16, 1907; Proc. U. S. Nat. Mus., XXXIV, p. 626, Sept. 14. 

 1908. 



* Smiths. Misc. Coll., XLV, p. 4, Nov. 6, 1903. 



