LYON] NEW SUMATRAN SQUIRRELS 279 
1903. Sciurus peninsularis MILLER, Smithsonian Miscell. Coll., xiv, p. 10, 
November 6, 1903.! 
Co-types.—In British Museum, not seen. 
Distribution —Bencoolen (type locality) and the low swampy 
lands of southeastern Sumatra. See map, page 283. 
Color.—Based on specimens from the low lands of eastern Sumatra, 
collected by Dr. Abbott. Upperparts, a fine grizzle of black and 
tawny-olive; tail similar, but grizzle coarser, sometimes appearing 
annulated and often somewhat rufescent toward the tip. Cheeks 
practically concolor with upperparts. Upper surfaces of feet, a 
fine grizzle of black and ochraceous or tawny-ochraceous. Under- 
parts, orange-rufous or ochraceous-rufous, rarely deepening to 
ferrugineous in some specimens. Light side stripe, about 5 mm. 
wide, dirty buff or cream-buff; black stripe, averaging 10-15 mm. 
wide, almost clear black. 
Measurements.—Skin of No. 113156, United States National Mu- 
seum, adult male, Indragiri river, Sumatra: Head and body, 220 
mm.; tail vertebre, 185; hind foot with and without claws, 48 and 
44. Skull of No. 113156: Basal length, 44 mm.; zygomatic breadth, 
31; interorbital constriction, 18.4; breadth of brain-case above roots 
of zygomata, 23.3. 
Specimens examined.—Eleven skins and skulls; Salat Rupat, 3; 
Kateman river, 3; Indragiri river, 5. 
SCIURUS VITTATUS TARUSSANUS new subspecies 
Type.—Adult female, skin and skull, No. 141038, United States 
National Museum, collected at Tarussan Bay, west coast of Su- 
matra, December 28, 1904, by Dr. W. L. Abbott. Original number, 
3857. 
Distribution—Vicinity of Tarussan Bay, Sumatra. See map, 
page 283. 
Diagnostic characters—Similar to typical Sciurus vittatus, but 
black side stripe rather narrower and less clear and underparts 
ochraceous or orange-ochraceous instead of ferrugineous or orange- 
rufous. 
Color.—Upperparts and tail, a fine grizzle, coarser on the tail 
1This species was described by Mr. Miller under the assumption that the 
Tapanuli Bay squirrels represented typical vittatus. Material at that time was 
insufficient to show that several forms of the vittatus group occurred on Su- 
matra. If, as Mr. Bonhote states, S. peninsularis is identical with the types 
of S. vittatus, S. peninsularis is a synonym of S. vittatus and the Tapanuli 
Bay specimens represent a new form, not named until now. 
