no. 1809. MAMMALS FROM BORNEO AND VICINITY— LYON. 89 



tawny ochraceous in the specimen from Klumpang Bay; inner side 

 of the upper portions of fore and hind legs similar to under parts of 

 body; light side stripe (about 75 by 7 mm.), dull cream color; dark 

 side stripe about the same length, but nearly twice as wide, blackish, 

 fairly clear in color or sprinkled with a few buffy hairs. A sugges- 

 tion of the grayish color of the feet is seen about the extreme anterior 

 portion of head. 



Skull and teeth. — These show no special peculiarities, and I have 

 been unable to find characters in them by which they may be dis- 

 tinguished from related forms. 



Measurements. — See table, page 91. 



Specimens examined. — Three, the type from Pamukang Bay, one 

 from Klumpang Bay, and one from the Saratok River. 



Remarks. — Sciurus poliopus needs no comparison with any of the 

 other known members of the vittatus group. The combination of 

 "red" belly and gray feet occurs in no other members of the group 

 so far as I am aware, with the exception of the species to be described 

 below. 



SCIURUS MARINSULARIS, new species. 



Type.— Skin and skull of adult male, Cat. No. 151777, collected on 

 Pulo Laut, off southeastern Borneo, December 17, 1907, by Dr. W. L. 

 Abbott. Original number, 5619. 



Diagnostic characters. — A member of the vittatus group, with a red 

 belly and gray feet similar to Sciurus poliopus, described above, but 

 with the under parts ochraceous-rufous and with less gray appearing 

 on portion of legs adjacent to feet. 



Color — Type: Upper parts of head and body and outer surfaces 

 of fore and hind legs a fine grizzle of blackish and a color intermediate 

 between a light tawny-olive and buff-yellow, the two colors about in 

 equal proportions; under parts, including inner sides of fore and hind 

 legs, ochraceous-rufous; upper surfaces of fore and hind feet, with the 

 buffy color of the upper parts replaced by light grayish, tail similar 

 to the upper parts, but the buffy portions of the hair lighter and the 

 grizzle coarser, the tail in certain lights and portions appearing annu- 

 lated; light side stripe (about 75 by 10 mm.), buff; dark side stripe 

 (about 75 by 5 mm.), blackish. A suggestion of the grayish color of 

 the feet is seen about the extreme anterior portion of the head. 



Skull and teeth. — These show no special peculiarities, and I have 

 been unable to find characters in them by which they may be dis- 

 tinguished from related forms. 



Measurements. — See table, page 91. 



Specimens examined. — Six from Pulo Laut and two from Pulo 

 Sebuku. 



