miller] seventy new MALAYAN MAMMALS 21 



with dull ferruginous which increases rapidly in intensity to form 

 an almost clear ferruginous lateral stripe. Neck patch bright 

 ferruginous, strongly contrasted with surrounding parts. Hind legs 

 like back except that inner posterior surface is heavily washed 

 with clear ferruginous. Front legs a clear silvery grizzle of ecru- 

 drab and whitish smoke-gray. Underparts dull buffy gray washed 

 with pale ferruginous on chest. A large, clear, orange-rufous area 

 at groin. Tail distinctly paler than back, the light annulations of 

 the hairs whitish cream-buff on dorsal surface, pale buff below. 

 Black pencil well developed. 



Skull and teeth. — The skull closely resembles that of Sciurus 

 davisoni but is slightly larger, the rostrum is broader and the audital 

 bullae are more inflated anteriorly. Teeth as in the related species. 



Measurements. — Measurements of type : total length, 465 ; head 

 and body, 250; tail vertebrae, 215 ; hind foot, 52 (48) ; skull, greatest 

 length, 57 ; zygomatic breadth, 33. 



Specimens examined. — Five, all from Chance Island. 



Remarks. — Its large size, pale color, the contrast between the 

 upper surface of the tail and the back, and the brightness and dis- 

 tinctness of the ferruginous markings make this species one of the 

 most strongly characterized in the group. The series of skins shows 

 no variations worthy of note. 



SCIURUS ALTINSULARIS sp. nov. 



Type. — Adult female (skin and skull). No. 111,975, United States 

 National Museum. Collected on High Island, Mergui Archipelago, 

 December 31, 1900, by Dr. W. L. Abbott. Original number, 810. 



Characters. — General appearance as in Sciurus casensis, but size 

 smaller, general color paler, upper surface of tail not lighter than 

 back, and ferruginous markings replaced by ochraceous-buff. 



Color. — Type : back, sides, head, and both surfaces of tail a fine 

 grizzle of black and cream-buff, the latter everywhere in excess and 

 palest on head, darkest on tail. Neck patch dull ochraceous-buff, 

 slightly contrasted with color of surrounding parts. Sides strongly 

 tinged with ochraceous-buff in region between axilla and groin. 

 Underparts smoke-gray, grizzled with broccoli-brown along median 

 line of chest. A small, clear ochraceous-buff area at axilla and 

 another at groin. Inner surface of legs like belly, outer surface and 

 feet somewhat darker. Tail with black pencil well developed. 



Skull and teeth. — The skull resembles that of Sciurus casensis but 

 is distinctly smaller. Teeth not peculiar. 



Measurements. — Measurements of type: total length, 437; head 



