MAMMALS COLLECTED BV DR. W. L. ABBOTT 223 



41.6 (43.6); basilar length 39 (40); palatal length 21.6 (23); dia- 

 stema 1 1.6 (n.6) ; length of nasals 15.6 (15) ; breadth of nasals ante- 

 riorly 6 (7-8) ; breadth of nasals posteriorly 3 (4) ; interorbital 

 breadth 17.4 (18) ; breadth between tips of postorbital processes 26 

 (28); zygomatic breadth 28 (31); mastoid breadth 20.4 (22); 

 breadth of palate between premolars 5.6 (6.4) ; depth of rostrum at 

 posterior extremity of nasals 1 1. S (13); mandible 30 (29.6); depth 

 of mandible at posterior root of large premolar 7 (8) ; maxillarj^ tooth- 

 row (alveoli) — (9'6) ; breadth across both upper incisors together 

 at rim of alveoli 4 (5) ; mandibular toothrow (alveoli) — (9). 



Speci7iiens examined. — Two, both from the type locality. 



Re??iarks. — The peculiarities of the skull characterize Sciuriis 

 temiirostris as a strongly marked local form of the S. notatus group. 



SCIURUS ANAMBENSIS sp. nov. 



Type. — Adult female (skin and skull). No. 101686 United States 

 National Museum. From Pulo Siantan, Anambas Islands. Collected 

 September 12, 1899. 



Characters. — Like Sciurus notatus from Singapore but slightly 

 smaller; color, particularly on underparts, paler. Skull similar to 

 to that of 6". notatus (though in some respects resembling that of 6". 

 temiirostris') but somewhat smaller and with distinctly narrower 

 palate. 



Color. — Upperparts and tail as in Sciurus notatus and S. tenulros- 

 trls^ but slightly paler, the difference easily perceptible on comparison 

 but impossible to define in words. Underparts orange-rufous, but 

 everywhere much paler than in Ridgway's figure and on the throat 

 and inner side of front legs fading to ochraceous-buff. Outer surface 

 of legs scarcely if at all tinged with cinnamon. Cheeks, chin, and 

 sides of neck wood-brown. Otherwise as in S. notatus. 



Skull. — The skull of Sciurus anainbe7isis^ except for its slightly 

 smaller size, closely resembles that of S. notatus from Singapore. 

 The nasals are exactly as in this species, and do not in the least sug- 

 gest those of 6". temiirostris. On the other hand the palate is nearly 

 as narrow as in the Tioman species, while the rostrum when viewed 

 from below has nearly the same form as in the latter. Audital bullee 

 slightly larger than in S. notatus and S. te?iziirostris. When viewed 

 from behind (the skull held upside down) they appear to rise 

 higher and more abruptly above level of basioccipital than in the re- 

 lated species. Teeth in no way peculiar. 



Measurejncnts. — External measurements of type : total length 369 ; 



