THE 



JOURNAL 



01' THE 



Natural History Society of Siam 



Deceinbei- 1915. 



Vol. 1. 



No. 4. 



ON TWO NEW RATS FROM THE I 

 GULF OF SIAM. 

 ►«-< — - — 



By C. Bodpjx Kloss, F. Z. y. 



During a short vidit to Koli Hi Cliaiig and Koli Phai, 1 obtained 

 a number of specimens of Epinms rattas, which appears to be the only 

 species of terrestrial mammal inhabiting the two islands other than the 

 squirrels that I have alread}^ dealt with in the Journal of this Society. 



These rats differ sufficient!}^ from each other and from any 

 named form of E. rattas from South-East Asia to make it necessary 

 to describe them. From Flower's notes on the common rats of Bang- 

 kok ( P. Z. S. 1900, p. 361 ) it would seem that the animals of that 

 localit}' are in part of somewhat similar type. 



Epimus rattus portus, subsp. nov. 



Ti/pe. Aged male ( skin and skull ) No. 1911/C B. K. Collect- 

 ed on Koh Si Chang, Inner Gulf of Siam, 27th Januar\% 1915. 



Clutraders. A long-tailed race of E. rattas of notably yellow 

 and bright colouration. 



Coloar. Above light ochraceous-tawny becoming paler on 

 the sides and limbs and striped ( coarsely grizzled ) on the dorsal 

 region by the dark tips of flexible pale-based spines and longer 

 dark ])iles, the latter being most conspicuous on the rump. Base of 

 fur grey. 



