60 THE NEW SUMATRAN PIG. 



only shows no thickening at all in that region but is remarkable 

 for its exceeding thinness throughout. 



In a note on Sus oi in the "Field" of August 13th, 1904, 

 Mr. R. Lyddeker (apparently basing his opinion merely on two 

 photographs of Mr. Romenij's specimens) is inclined to doubt 

 whether it can be separated from Sus barbatus and also re- 

 peatedly claims it as an addition to the fauna of the Malay 

 Peninsula. 



Without going into the question of the validity of Sus oi 

 as a species — save to remark that it is doubtful whether there 

 is at present in Europe sufficient material with which to refute 

 Mr. Miller's opinion of its distinctness — I cannot refrain from 

 pointing out that it is impossible to claim this pig for the 

 Malay Peninsula on the strength of its occurrence in Pulo Bat- 

 tarn since the affinity of the fauna of the islands of the Rio-Linga 

 Archipelago — although strongly specifically differentiated in 

 many respects — is entirely with that of Sumatra. 



Only one species of wild pig is at present known to occur 

 in the Malay Peninsula and that is the animal regarded as iden- 

 tical with Sus cristatus of India, and I see no more reason for 

 now claiming Sus oiior the Mainland than there would have 

 been for including in the past Sui, vittatus, Presbytes maurus 

 and other animals that occur in the above islands, amongst 

 the fauna of the Malay Peninsula. 



(The plates illustrating this paper are from photographs 

 lent by Mr. Romenij). 



Jour. Straits Branch 



