ON MAMMALS FROM BILLITON. 149 



NOTE XXII. 

 ON A COLLECTION OF MAMMALS FROM BILLITON. 



Dr. F. A. JENTINK. 



March 1890. 



(Plate 7, figs. 11—14). 



Up to this day I knew only a single Mammal , Sciurus 

 prevostii, from Billiton , a small island, situated between 

 Borneo and Banka. As the islands between Sumatra and 

 Borneo bear a peculiar scientific interest with regard to 

 the distribution of the animals and to the hypothesis 

 concerning the relation in prehistorical times between these 

 two large islands, I was in sanguine expectations in 

 receiving a letter from Dr. A. Vorderman (Batavia), con- 

 taining the kind information that he had made a journey 

 to Billiton in June 1888 and now presented the then 

 collected animals to our Museum. And how great was my 

 astonishment in finding in that collection no less than 

 10 species of Mammals from Billiton. So that we know 

 at present eleven well-defined species from that interesting 

 point in the Malay Archipelago. 



Two species , Pteropus edulis and Sciurus prevostii , in 

 the collection are from Mendanao, a small island close 

 to the west coast of Billiton. 



The following 10 species are contained in Vorderman's 

 collection from Billiton. 



Tarsius spectrum Geoffroy. 

 An adult female and a young male (in spirits). 



Notes from tbe Leyden ]Miiseum, "Vol. XII. 



