MAMMALS COLLECTED BY DR. W. L. ABBOTT 221 



SCIURUS TENUIS Horsfield. 



1824. Sciunis tenuis Horsfield, Zoological Researches in Java and the neigh- 

 boring Islands. (Pages not numbered.) Type from Singapore. 



Specimens of this sqtiirrel indistinguishable from topotypes were 

 taken on the following islands : 



Linga; one adult female. 



Aiiambas; Pulo Siantan, nine specimens of both sexes ; Pulo Mobur, 

 one adult male ; Pulo Jimaja, oiae adult female. 



Tioinan; one adult male. 



SCIURUS NOTATUS Boddaert. 

 1785. &-z«n« «(7/a/«5 Boddaert, " Elenchus Mammalium, p. 119." 



Four females collected on Linga Island, July 9-21, agree in all re- 

 spects with the form of Sciurus notatiis occurring at Singapore. 

 Whether this is true notatus cannot now be determined. 



SCIURUS TENUIROSTRIS sp. nov. 



Type. — Adult female (skin and skull). No. 1 01 753 United States 

 National Museum. From Tioman Island. Collected September 30, 

 1899. 



Characters. — Externally similar to Sclicrits notatus from Singa- 

 pore. Skull with rostral portion more slender and lightly built than 

 in the continental forms. 



Color. — Entire dorsal surface of head and body a fine grizzle of 

 black and yellowish wood-brown, the individual hairs black with two 

 or often three brown rings. The wood-brown is (at the surface) 

 everywhere in excess of the black. Cheeks, outer surface of legs and 

 upper surface of feet dull cinnamon, faintly grizzled. Underparts 

 and inner side of legs orange-rufous, brightest posteriorly (where it 

 closely agrees with Ridgway's figure) , considerably paler on chest, 

 throat and inner side of front legs. On sides the color of belly is 

 separated from that of back by two longitudinal stripes extending from 

 just behind axilla to flank, the lower black, the upper buff. Though 

 the width of the stripes is somewhat variable, that of the black is usu- 

 ally about lo mm., that of the buff slightly less. Dorsal surface of 

 tail like back but less finely grizzled, each hair with five or six brown 

 rings alternating with similar areas of black. Ventral surface even 

 less finely grizzled and the brown distinctly tinged with cinnamon like 

 that of flanks. Pencil in no way different from rest of tail. Whiskers 

 black. 



