miller] seventy new MALAYAN MAMMALS 1 9 



SCIURUS BENTINCANUS sp. nov. 



Type. — Adult female (skin and skull), No. 104,383, United States 

 National Museum. Collected on Bentinck Island, Mergui Archi- 

 pelago, March 11, 1900, by Dr. W. L. Abbott. Original number, 



349- 



Characters. — External appearance essentially as in Sciurus davi- 

 soni but size somewhat greater, and skull with larger, more inflated 

 audital bullae. 



Color. — Type : The color so closely resembles that of Seiurus 

 damsoni from southern Tenasserim that no detailed description is 

 necessary. The reddish area on sides and neck is, however, slightly 

 more intense, approaching the ferruginous of Ridgway. In the 

 type specimen the posterior half of the back is in a dull worn pelage 

 slightly contrasting with the fresh coat on other parts of the body. 

 Chest and belly with a distinct reddish wash, but this is not suffi- 

 ciently heavy to obscure the usual grizzled gray. 



Sk^lll and teeth. — In size and general outline the skull does not 

 differ appreciably from that of Sciurus davisoni, but the audital 

 bullae are distinctly larger and more inflated, a character that is 

 particularly noticeable when the skull is viewed from below. The 

 width of the anterior half of the bullae in this aspect is fully i mm. 

 greater in the island species. The teeth show no peculiarities. 



Measurements. — Measurements of type : total length, 465 ; head 

 and body, 235 ; tail vertebrae, 230; hind foot, 57 (53) ; skull, greatest 

 length, 58 ; zygomatic breadth, 33. 



Specimens examined. — Three, all from Bentinck Island. 



SCIURUS MATTHiEUS sp. nov. 



Type. — Adult female (skin and skull), No. 111,920, United States 

 National Museum. Collected on St. Matthew Island, Mergui 

 Archipelago, December 11, 1900, by Dr. W. L. Abbott. Original 

 number, 774. 



Characters. — Similar to Sciurus bentincanus but not as large and 

 with reddish areas on neck and sides less strongly marked. 



Color. — Type : The color throughout is exactly similar to that of 

 Sciurus bentincanus except that the reddish areas on neck and sides 

 are slightly duller and less strongly contrasted with surrounding 

 parts. 



Sknll. — The skull is similar to that of Sciurus bentincanus in 

 form, though the size is much less. Notwithstanding the size of 

 the skull the bullae are fully as large as those of Sciurus davisoni. 

 The teeth show no peculiarities. 



