70 SOME VISITS TO BATAM ISLAND. 



21. Sus rliionis, Miller. Observed. This is the "babi 



bakau " of the natives and is common everywhere. It 

 is the island form of S. viUatus. 



22. Sus oi, Miller. Observed. The " nang-oi " is plentiful 



but to a solitary collector pigs are difficult to obtain. 

 Generally one is only aware of their presence by a rush 

 through the undergrowth and distant snorts and unless 

 one is lucky in meeting them in the open they rarely 

 figure in collections. The " nang-oi " does great 

 damage to the pineapple plantations and is said to be 

 far less timid than other pigs: in fact the natives 

 reported that boars often merely grunted when they 

 tried to scare them away. They are afraid to shoot 

 it with their ineffective ammunition as it charges when 

 wounded. It ranges from Batam to Banka and 

 throughout the swamp of E. Sumatra. 



23. Tragulus kanchil, sp. A " pelandoc " is said to occur. 



24. Tragulus javanicus perflavus, Miller. This new species 



is a strongly marked form having very bright pelage 

 and a pure orange neck entirely free from black shad- 

 ing. I have it also from Pulo Galang and it has been 

 taken since on Bulang. It affords a particularly good 

 illustration of local variation as T. formosus, Miller of 

 Bintang Island, only five miles away, is exceedingly 

 dark with a collar strongly washed with black. 

 Thus the mammal fauna of Batam is Sumatran and 

 not Peninsular for the above definitely identified species 

 Mus concolor and Cynopterus montanoi alone are from the 

 Peninsula only. On the other hand, Mus lingensis, M. fi?mus 

 and Sus oi are known from the Sumatra and the Bio-Lingga 

 Archipelago only. Arctogalidia simplex, Sus rliionis and 

 Tragulus perflavus are found elsewhere only in the Archi- 

 pelago while Tupaia ferruginea balamana and Mus batamanus 

 are so far known from Batam alone. 



I am inclined to think that Batam, Bulang, Bempang 

 and Galang form a small group which faunistically is more 

 nearly related to the islands to the westward than to Bintang 



Jour. Straits Branch. 



