82 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.40. 



SCIURUS ARMALIS, new species. 



Type.— Skin and skull of adult male, Cat. No. 145420, U.S.N.M., 

 collected on Pulo Panebangan, off west coast of Borneo, May 19, 

 1907, by Dr. W. L. Abbott. Original number, 5257. 



Diagnostic characters. — A member of the prevostii group of squirrels 

 related to Sciurus carimatx Miller, 1 differing in having the light 

 shoulder area larger and practically clear gray (grizzle of black and 

 white), without buffy admixture, and lighter colored feet. 



Color. — Upper parts of head and body, and entire tail, black or 

 blackish, under parts, inner sides of fore and hind legs, dull orange- 

 rufous to ferruginous; upper surfaces of hands and feet, ochraceous 

 to orange buff; side stripe extending from behind shoulder to heel, 

 white or whitish, quite pure throughout its extent, but slightly 

 mixed with blackish along the thighs ; sides of head and neck, grayish, 

 a grizzle of blackish and whitish, the darker color predominating 

 except about the base of whiskers which is quite light ; light area of 

 shoulder largely developed, a coarse grizzle of whitish or cream color 

 and blackish, the lighter color much in excess; outer side of upper 

 arm, nearly clear whitish or cream color becoming buffy toward the 

 lower arm. 



SJcull and teeth. — These show no special peculiarities. The audital 

 bullae are of the type found in Sciurus carimatx. 



Measurements. — For external and cranial measurements of the 

 type and series, see table, page 83. S. armalis is one of the smaller 

 members of the prevostii group, about like S. carimatx and S. pelapius 

 in size, and distinctly smaller than the form of prevostii squirrel found 

 on the adjacent mainland of Borneo. 



Specimens examined. — Twelve, all from Pulo Panebangan. 



SCIURUS PELAPIUS, new species. 



Type. — Skin and skull of adult female, Cat. No. 145417, collected 

 on Pulo Pelapis (South Island) off west coast of Borneo, May 30, 1907, 

 by Dr. W. L. Abbott. Original number, 5335. 



Diagnostic characters. — A member of the prevostii group; very 

 similar to Sciurus carimatx Miller, 1 but differing in possessing a 

 darker shoulder and larger audital bullae. 



Color. — Upper parts of head and body and entire tail, black or 

 blackish; underparts, inner sides of fore and hind legs, and upper 

 surfaces of feet and hands, dull orange-rufous to ferruginous; side 

 stripe, extending from behind shoulder nearly to heel, whitish or 

 cream color, quite pure throughout its whole extent, but slightly 

 mixed with blackish along the thighs ; sides of head and neck, grayish, 

 a grizzle of blackish and whitish, the darker color being in excess, 



1 Proc. U. S. Nat. Mus., vol. 31, No. 1481, p. 57, July 26, 1906. 



