126 



But the type series of 3his validus consisted of two individuals 

 only, and as is now shown animals from the Siamese States are as 

 large, if not larger, than the southern forms, while examination of a 

 series of some 30 individuals ranging throughout the Peninsula shows 

 that no reliance can be placed on the absence or otherwise of an 

 anterior outer tubercle as a distinguishing character. Epimys firmus 

 of the Rhio Archipelago is also stated to have the molar tubercle 

 lacking but we find it present in four or five individuals out of a 

 series of 15 from the Karimon Islands and Pulau Kundur. 



In October, 1911, we described a peninsular rat under the name 

 of Mus muelleri foederis ( Journ. Fed. Malay States Mus. iv, p. 245, 1911) 

 but a comparison of the type with the much larger series of Epimys 

 validus now m our possession shows that this name must also be 

 regarded as a synonym of that species. 



(For measurements see helow.) 



Measurements 

 Peninsula : 



of rats fi^om Bandon Province, N.E. Malay 



