150 PROCEEDINGS OF THE ACADEMY OF [March, 



(61);" basal length, 52.4 (52); basilar length, 4«» (49); length 

 of nasals, 19.0 (19.8); lea.st interorbital breadth, 26 (26); 

 zygomatic breadth, 39 (39); mandible, 38.4 (37); maxillary 

 molar series (alveoli), 12 (12.8); mandibular molar .-cries (alve- 

 oli), 13 (14). 

 Ratufa notabilis sp. nov. 



Type.—Xd\At male (skin and skidl), N.x 113,064 United 

 States National INIuseum. Collected on west coast of Linga Island, 

 August 24, 1901, by Dr. W. L. Abbott. Original number 

 1,210. 



Characters. — Size large, fully e([ual to that of R. bicolor and R. 

 melanopepla. Upper parts uniform rich dark-brown ; under parts, 

 feet, cheeks and face yellowish- white in conspicuous contrast. 



Color. — Upper parts and outer surface of legs burnt umber, 

 slightly variegated by the faint tawny annulations which are pres- 

 ent on most of the hairs. These annulations are less distinct than 

 in R. pyrsonota, but nevertheless quite evident, particularly on 

 neck and shoulders. On middle of back and in lumbar region 

 many of the hairs are buffy white, producing a faint lighter cast. 

 Under parts, feet, cheeks and inner surface of legs clear cream-buff, 

 more yellow over middle of belly. Muzzle and face somewhat less 

 yellowish, but distinctly grizzled by a fine admixture of brown, par- 

 ticularly on anterior portion of crown and in region between eyes. 

 Tail with the hairs everywhere whitish cream-buff at base. On 

 doi'sal and lateral surfaces of tail the terminal half is burnt umber, 

 but ventrally the cream- buff is clear, except for the darker line 

 caused by the appressed short hairs, many of which are brown. 



Skull and Teeth. — The skull resembles that of Ratufa melan- 

 opepla in size, but in form appears to be slightly less elongate, a 

 difference which may readily prove to be inconstant. Teeth as in R. 

 melanopepla. 



Measurements. — External measurements of type: Total length, 

 780; head and body, 345; tail vertebrae, 435; hind foot, 82 (73). 



External measurements of an adult female from the type locality: 

 Total length, 770; head and body, 335; tail vertebrae, 435; hind 

 foot, 80 (72). 



Cranial measurements of type : Greatest length, 68 ; basal length, 



" Measurements in parentheses are those of an adult male Ratufa affinis 

 from Singapore, the type locality. 



