MAMMALS COLLECTED BY DR. W. L. AHIiOTT 215 



of braincasc at front of basioccipital 9 (S.4) ; frontopalatal deptli at 

 posterior extremity of nasals 6.6 (6) ; least depth of rostrum im- 

 mediately behind incisors 5 (4.8) maxillary toothrow (alveoli) 4.6 

 (5); width of first upper molar 1.6 (1.6); mandible 15.4 ( 14.6) ; 

 mandibular toothrow (alveoli) 4.6 (5). 



Spcc/'/nc}is examined. — One, the type. 



7^CMar/:s. — J/^/s obscurus will probably be found to occur on the 

 mainland of the Malay Peninsula, where its range is likely to coincide 

 witli that of ^[ks surifer and AIus vocifera7is. 



RATUFA ANAMB^ sp. nov. 



Type. — Adult male (skin and skull). No. 101725 United States 

 National Museum. From Pulo Jimaja, Anambas Islands. Collected 

 September 25, 1S99. 



Characters. — In color and in cranial characters similar to Ratufa 

 melanopepla, but size nearly equal to that of Ratufa gigantea. Ears 

 not tufted. 



Color. — Cheeks, throat, sides of neck, inner surface of legs, and 

 entire ventral surface of body rich tawny yellow (ochraceous) paler 

 on throat, cheeks, and sides of neck, richer on chest, the belly much 

 darkened by appearance at surface of blackish bases of hairs. Re- 

 mainder of pelage and entire tail glossy blue-black, with the usual 

 reddish brown cast beneath the surface. Yellow of front leg spread- 

 ing conspicuously over outer side between elbow and wrist. 



Skull and teeth. — Except for their distinctly larger size the skull 

 and teeth scarcely differ from those of R. ?nelanopepla. Audital 

 bullae narrower and more elevated above surface of basioccipital (when 

 skull is held upside down) than in R. melanopepla, the peculiarity in 

 form the same as that of the Tioman race, but more accentuated. 



Measurements. — External measurements of type : total length 825 ; 

 head and body 374; tail vertebree 451 ; pencil 100; hind foot 83 (76). 

 Average of six specimens from the type locality : total length 806 

 (781-S3S) ; head and body 370 (356-381); tail vertebra 436 (400- 

 470) ; hind foot 82.8 (82-84) ; hind foot without claws 75.8 (75-77). 



Cranial measurements of type: greatest length 72; basal length 60 ; 

 basilar length 56 ; palatal length 28 ; length of nasals 25 ; breadth of 

 nasals anteriorly 13; breadth of nasals posteriorly '$>.6\ interorbital 

 breadth 26 ; breadth between tips of postorbital processes 40 ; zygo- 

 matic breadth 45 ; mastoid breadth 33 ; breadth of palate between 

 premolars 9; depth of rostrum at posterior extremity of nasals 21; 

 mandible 42 ; depth of mandible at posterior root of premolar 1 1 .4 ; 



