[Pl. 70.]][H 108.
Orkney Vole.
Microtus orcadensis.

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[Pl. 71.]][H 109.
Bank Vole.
Evotomys glareolus.

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The form that Barrett-Hamilton recognises as M. agrestis and calls the Northern Grass Mouse, is, so far as Britain is concerned, represented only in Scotland and its western islands by five sub-species which he names as under:—

Macgillivray's Grass Mouse (M. agrestis macgillivraii), a rich buff-coloured form with thin fur, restricted to Islay, where it is rare.