137 



U. EPIMYS SURIFER >1 AN KALIS. 



Robinson and Kloss, torn, cit., p. 230. 



Koh Pennan, 21 examples. 



On account of the broad white band oi- cuft' which in extreme 

 example.s extends over the whole of the forearm this is externally 

 one of the most differentiated island races of E. snrifer in the 

 peninsular area. 



(For measurements see p. 138.) 



12. EPIMYS SURIFER SPURCUS. 



Hobiiison and Kloss, torn, cit., p. 230. 



Koh Samui, 23 examples. 



Koh Samui being nearer to the mainland than is Koh Pennan 

 this race has had a shorter time to evolve peciiliar characters than 

 has had E. s. manicalis, but it has made sufficient progi'ess in the 

 same direction to differentiate it from the mainland animal. It is 

 curious to tind that E. s. spurcus bears in other respects a close 

 resemblance E. S. flavidulus, a foi'm occurring in Pulau Langkawi, 

 an island on the other side of the Peninsula, and from this it is 

 mainly distinguished by the different proportion of length of body 

 and tail. 



(For measurements see p. 138.) 



13. EPIMYS JERDOXI PAN. 



Robinson and Kloss, torn, cit., p. 229. 



Koh Samui, 5 examples. 



This is a slightly differentiated form of the mainland E. j. bukit, 

 and is the first representative of that animal that has been found on 

 any of the islands in the neighbourhood of the Malay Peninsula. 



(For measurements see p. 138.) 



14. EPIMYS REMOTUS. 



Robinson and Kloss, torn, cit., p. 231. 



Koh Samui, 6 examples. 



Koh Pennan, 3 examples. 



This species was originally described from a series of six 

 examples taken on Koh Samui but on further examination of material 

 from the islands it appears that three individuals from Koh Pennan 

 must be allocated to it also. 



In addition to the differences already pointed out they may be 

 distinguished from E. rattus, which smaller animals superficially 

 resemble, by the much greater length of tail which broadly exceeds 

 in every case that of head and body by 50 mm. as against about 

 half that amount in the other, and also by difference of habit in that 

 tlie}- are forest dwellers while E. rattus congregates only in the 

 neighbourhood of houses or villages. 



(For measurements see p. 138.) 



