MAMMALS OF THE NATUNA ISLANDS I33 



(86); maxillary toothrow (exclusive of incisors) 34^ (41)) mandib- 

 ular toothrow (exclusive of incisors) 39 (44) ; crown of first upper 

 molar 5.4 x 5 (5.4 X5.6) ; crown of second upper molar 4x5 

 (5.4 X 6.4) ; crown of second lower molar 7 x 4.2 (8.4 x 5.4). 



Specimens examined. — Seven (two young in alcohol and one skull 

 without skin) , all from the type locality. 



Remarks. — Arctogalidia inornata is so distinct from the previously 

 described species as to require no special comparisons. It is common 

 on Bunguran where it frequents the cocoanut trees, living for the most 

 part in the tops among the leaf stalks. 



VIVERRA TANGALUNGA Gray. 



1895. Viverra tangalunga Thomas and Hartert, Novitates Zoologicse, 11, 

 p. 490. December, 1895 (Bunguran). 



Nine specimens from Bunguran. These agree in all respects with 



the Bornean animal. 



TUPAIA SPLENDIDULA Gray. 



1894. Tupaia splendidida Thomas and Hartert, Novitates Zoologicae, I, 

 p. 656. September, 1894 (Bunguran). 



1893. Tupaia sple^ididula typica Thomas and Hartert, Novitates Zoologi- 

 cee, II, p. 489. December, 1895 (Bunguran). 



Two specimens from Bunguran. 



TUPAIA LUCIDA (Thomas and Hartert). 



1895. Tupaia splendtdula lucida Thomas and Hartert, Novitates Zoo- 

 logics, II, p. 490. December, 1895 (Pulo Laut). 



Seven specimens (two in alcohol) from Pulo Laut. 



TUPAIA SIRHASSENENSIS sp. nov. 



1894. Tupaia tana Thomas and Hartert, Novitates Zoologicse, i, p. 657, 

 September, 1894 (Sirhassen). 



lype. — Adult male (skin and skull) No. 1047 12 U. S. National 

 Museum. Collected on Sirhassen Island, South Natunas, June 5, 

 1900. Original number 442. 



Characters. — In general similar to Bornean specimens of lupaia 

 tana., but smaller (hind foot 47 instead of 52, greatest length of skull 

 55 instead of 60), gray markings on head and shoulders less distinct, 

 and red of tail brighter. Rostral portion of skull less attenuate than 

 in lupaia tana. 



Color. — The color so exactly resembles that of the common Bornean 



Tupaia tana as to need no detailed description. Gray of head darker 



^ Tooth measurements are from a younger specimen (male) with perfect denti- 

 tion. 



