lO SMITHSONIAN MISCELLANEOUS COLLECTIONS [vOL. 45 



Specimens examined. — Twelve, all from Pulo Pemangil. 



Remarks. — Among the squirrels of the Sciiirus vittatus group 

 with which I am familiar this species is readily distinguishable by 

 its uniform gray dorsal surface, in which the grizzle has become 

 obsolete. 



SCIURTJS AORIS sp, nov. 



Type. — Adult female (skin and skull), No. 112,418, United States 

 National Museum. Collected on Pulo Aor, off coast of Johore, June 

 5, 1901, by Dr. W. L. Abbott. Original number, 1002. 



Charaeters. — A pallid member of the Sciiirus vittatus group, much 

 like 5". pemangilensis m general color, but back and sides sharply 

 and distinctly grizzled, and red of underparts slightly less bright. 



Color. — Type : The type so closely resembles that of Sciiirus 

 pemangilensis that no detailed description is necessary. On back 

 and sides the elements of the grizzle are essentially the same in the 

 two species, but in that from Pulo Aor the colors are so sharply 

 contrasted as to produce the finely speckled appearance charac- 

 teristic of most of the members of the group. Underparts essentially 

 as in 6^. pemangilensis but the red not as bright. 



Skull and teeth. — I can detect nothing to distinguish the skull and 

 teeth from those of Sciurus pemangilensis. 



Measurements. — Measurements of type : total length, 335 ; head 

 and body, 185 ; tail vertebrge, 150; hind foot, 44 (41) ; skull, greatest 

 length, 45 ; zygomatic breadth, 25. 



Specimens examined. — Fifteen, all from Pulo Aor. 



Remarks. — Sciurus aoris is readily distinguishable from 6". 

 pemangilensis, by its sharply speckled back. In general color it 

 closely resembles Sciurus lautensis, but the flanks and thighs are 

 uniform with the back and not tinged with fulvous as in the Natuna 

 animal. The series shows no marked variations in color. 



SCIURUS PENINSULARIS sp. nov. 



Type. — Adult male (skin and skull). No. 112,511, United States 

 National Museum. Collected on north bank of Endau River, 

 Pahang, June 21, 1901, by Dr. W. L. Abbott. Original number, 

 1078. 



Characters. — Like Sciurus vittatus, but red of underparts strongly 

 tinged with ochraceous, and cheeks scarcely more yellow than sides 

 of neck. 



Color. — Type : upperparts and tail a fine grizzle of black and 

 ochraceous-buff, the latter a little in excess on body, the former on 

 tail. Underparts and inner surface of legs tawny, washed, particu- 



