592 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



Tapanuli Bay, western Sumatra), the outer about 3 nun. wide at the 

 middle, dirt}' butf in color; the inner about 5 nnu. wide, black, with a 

 slight grizzling- of the ochraceous rufous of the underparts. Sides of 

 head and under surface of tail similar in color to outer surfaces of legs. 



Memurements. — See table, page 592. 



Sjpecimens examined. — Eleven; see table, page 592. 



Remarks. — This squirrel is distinguishable in color from Sciuriis 

 mttatus (specimens from Tapanuli Ba}^, western Sumatra) by its less 

 yellow cheeks and distinctly rufous feet. From S. pen/n.st//arfs it is 

 distinguished by the narrow dirty buff instead of whitish cream-buff 

 side stripe and by the narrower less clear black side stripe and the 

 greater suffusion of the ochraceous rufous of the underparts on the 

 feet. Skins of S. tedongus are practically indistinguishable from 

 those of 8. hillitonas^ though the hind foot averages a little smaller 

 (see table p. 592) and the tips of the tails are inclined to tawny. 



The skulls of Semrns tedomjux differ from those of S. hUlitonus in 

 the shorter length of the maxillar}' tooth row (9 mm. as against 10 

 mm.), but are indistinguishable from skulls of S. peninsidaris in this 

 respect. 



External and cranial measurements of plantain squirrels from Banln and Billiton. 



Name. 



Sciurus tedonqus . . 



Do : 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Do 



Sciurus biUitonus. . 

 Do 



Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 

 Do. 



Locality. 



Num- 

 ber. 



Banka,Rengsam Point 



do 



do 



do 



do 



do 



dci 



Banka, Tedong- Point. 

 Banka, Bodaan Point. 

 Banka, Klaljat Bay ... 



do :.... 



Billiton, Batu Point . . 

 do 



.do. 

 .do. 

 .do. 

 .do. 

 .do. 

 -do. 

 .do. 



Billiton, Pingg-i Point. 

 Billiton, Buding Bay . . 



do 



Billiton, Batu Point . . 



124683 

 124684 

 124680 

 124086 

 124687 

 124688 

 124689 



"124717 

 124744 



^-124874 

 124745 

 124933 

 124934 

 124935 

 1 24931 ; 

 124937 

 12493S 

 12^939 



iil24440 

 1249)1 

 124972 

 124976 



0124977 



bl24942 



Female. 

 Male ... 

 ...do... 

 ...do... 

 ...do... 

 ...do... 

 Female. 

 Male . . . 

 ...do... 

 Female. 

 Male ... 

 ...do... 

 ...do... 

 ...do... 

 Female. 

 ...do... 

 ...do... 

 Male . . . 

 ...do... 

 ...do... 

 ...do... 

 Female. 

 ...do... 

 ...do... 



os5 



mm. 

 28.0 

 28.5 

 29.0 

 28.5 

 29.0 

 28.0 

 28.0 

 29.0 

 28.0 



28.5 

 29.0 

 31.0 

 28.5 

 28. 5 

 29. 5 

 29.5 

 30.0 

 26.5 



29.0 

 31.0 

 30.0 



—I o 



o'C 

 eg 



mm. 

 16.0 

 16.5 

 17.0 

 16.0 

 17.0 

 16.0 

 16.5 

 17.5 

 17.0 



17.0 

 17.0 

 18.0 

 17.0 

 17.0 

 17.5 

 17.0 

 18.0 

 15.0 



17.0 

 17.5 

 16.5 



vim. 

 9.0 

 9.0 

 9.0 

 9.0 

 8.7 

 9.0 

 9.0 

 9.0 

 9.0 



9.0 

 10.0 

 10.5 

 9.5 

 9.5 

 9.7 

 10.0 

 9.5 

 9.6 



10.0 



9.7 



10.0 



a Type. 



& Alcoholic. 



cNo skin. 



dNot fully adult. 



SCIURUS BILLITONUS, new species. 



1890. Sciurus nntatun Jentink, Notes Leyden Museum, XII, March 12, 1890, 



p. 152. 

 1905. Sciurus notatus Willink, Natuurkundig Tijdschrift Nederlandsch-Indie, 



LXV, p. 240. 



