miller] seventy new MALAYAN MAMMALS 57 



interorbital breadth, 15.6 (13.8) ; zygomatic breadth, 26.4 (24) ; 

 breadth of braincase above roots of zygomata, 19.6 (19) ; maxillary 

 toothrow exclusive of incisors (alveoli), 19 (18) ; mandible, 35.4 

 (33.6) ; mandibular toothrow exclusive of incisors (alveoli), 19.4 

 (18) ; crowns of first and second lower molars together, 7 (6.2). 



Specimens examined. — Two, both from Pulo Aor. 



Remarks. — Its large size and the pale color of the underparts 

 readily distinguish this species from Tupaia ferruginea. The color 

 of the back, however, is essentially as in the animal inhabiting the 

 neighboring portions of the Malay Peninsula, though the upper sur- 

 face of the tail is not as dark nor as strongly suiTused with yellow. 



TUPAIA TEPHRURA sp. nov. 



Type. — Adult female (skin and skull), No. 121,752, United States 

 National Museum. Collected on Tana Bala, Batu Islands, Sumatra, 

 February 12, 1903, by Dr. W. L. Abbott. Original number, 2276. 



Characters. — In size and general appearance not unlike Tupaia 

 phceura of Sinkep Island, but upperparts darker, shoulder stripes 

 better developed, and tail conspicuously lighter than body, its distal 

 half silvery buff-gray. 



Color. — Type : upperparts mixed ferruginous and black, the for- 

 mer in excess on neck, shoulders, and anterior half of back, the latter 

 in excess posteriorly. On crown the ferruginous is replaced by buff. 

 Shoulder stripes buff, well developed, about 4 mm. wide at middle. 

 Feet and ears blackish. Underparts buff somewhat darker than 

 that of Ridgway, particularly on middle of chest ; the anterior half 

 of belly darkened by the brownish under color. Tail light buff, the 

 proximal half heavily overlaid with blackish brown above, the distal 

 half grizzled with blackish and silvery, the under side clear buff 

 throughout, except brownish line along vertebrae and brownish 

 edging. 



Skull and teeth. — The skull and teeth do not differ appreciably 

 from those of Tupaia pJiccura. 



Measurements. — External measurements of type: total length, 

 323; head and body, 193; tail vertebr£e, 130; hind foot, 41 (38.6). 

 External measurements of adult male (No. 121,751) from the type 

 locality: total length, 330; head and body, 180; tail vertebrae, 150; 

 hind foot, 45 (42.6). 



Cranial measurements of type : greatest length, 52 ; basal length, 

 46.4 ; basilar length, 45 ; palatal length, 28 ; diastema, 4 ; breadth of 

 palate between middle molars, 9.2; least interorbital breadth, 15; 

 zygomatic breadth, 25 ; breadth of braincase above roots of zygomata, 



