THE BANK VOLE 
Sheppard in June 191 2. In colour the upper parts of this variety are a 
deep reddish brown, the under parts yellowish. 
Another large form [Evotomys erica, Barrett-Hamilton and Hinton), 
closely related to the one inhabiting Mull, has been found among heather 
on the Island of Raasay, which lies between Skye and the mainland. 
Describing this vole, Major Barrett-Hamilton says {A History of 'British 
Mammals, p. 425): "Unlike E. a/stoni, but in this respect resembling 
skomerensis and casarius, it has undergone considerable specialisation, 
apparently to fit it for subsistence upon a coarser and probably more 
exclusively vegetarian diet." The colour of the upper parts is dark brown, 
the under parts are strongly tinted with buff. 
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