CONTENTS OF PART XV. 



Gerald Edwin Hamilton Barrett-Hamilton : An 

 Appreciation . . 



RODENTIA (Rodents)— 

 Group Microti — 

 Genus Evotoniys — 



The Bank Mouse . . 



The Skomer Bank Mouse 

 Alston's Bank Mouse 

 The Raasay Bank Mouse 

 Genus IHcrotus 

 Sub-genus Microtus 



Group Agrestis ... 

 The Northern Grass Mouse 

 MacGillivray's Grass Mouse 

 The Hebridean Grass Mouse 

 The Eigg Grass Mouse 

 The Highland Grass Mouse 



The Muck Grass Mouse . . . . 



The Common Grass Mouse .... 



Group Orcadensis . . ... 



T/ie English local names have been revised in part by Mr W. W . Skeat, 

 M.A. {assisted by the late Professor IV. W. Skeat), and in part by 

 Mr C. M. Drennan, M.A. Land., late Scholar Einm. Coll. Camb. ; 

 the Celtic and Gaelic names by Dr E. S. Quiggin. M.A., Ph.D., 

 Fellow and Lecturer in Modern Languages and Celtic of Gonville 

 and Caius College, Cambridge ; while a list of Scottish Gaelic 

 names has been supplied by Mr C. H. Alston. Valuable 

 assistance has been rendered by Mr M. A. C. Hinlon regarding 

 extinct Mammals. Much information has been taken from Mr 

 G. S. Miller's recently published " Catalogue of the Mammals of 

 Western Europe" the use of the MS. and proofs of which 

 before publication was kindly permitted by the Trustees of the 

 British Museum of Natural History. 





409 

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 424 



425 

 426 



428 

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434 

 438 

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 441 

 442 



453 



ILLUSTRATIONS 



Full-page {Colotired and BlacJi and White). 



British Microtince (Skins); (i, 2) Arvicola amphibia amphibia; (3) A. a. 



reta ; (4, 5) Evotomys glareolus ; (6, 7) E. skomerensis. {Coloured). 

 Gerald Edwin Hamilton Barrett-Hamilton. 

 The Water Rat— (i) Left Ear; (2) Left Hand and (3) Left Foot; 



(4) Tail. 



Figures in Text. 



Cheek-Teeth of Evotoniys skomerensis. 



Diagrams of (i) Burrows of Bank Mouse; (2) A General Murine 



Highway in a Hedgerow. 

 Right Cheek-Teeth of Microtus agrestis. 

 Dorsal Views of Adult Skulls of Microtus agrestis Group. 

 Right m'^ of Microtus agrestis exsul. 

 Sleeping-places of Microtus agrestis exsul. 



Plan of Runs of Grass Mice under a fallen notice-board (diagrammatic). 

 Horizontal Section of Run of Grass Mouse passing under a Log. 

 Plan of Runs of Grass Mice in Coarse Grass. 

 Dorsal Views of Skulls oi Microtus orcadensis. 



