138 THE ZOOLOGIST. 



Evotomys glareolus. Bank- Vole. 



These are far from common, possibly owing to the flatness of 

 the country and the amount of standing water. Caught with 

 nuts and with cheese. 



Pitymys subterraneus. Subterranean Vole. 



Only one specimen procured. 



This Vole burrows to a depth of four and five feet, and is 

 therefore difficult to trap. 



Apodemus sylvaticus. Wood-Mouse. 



Very common ; so common, in fact, that in some places I 

 had to catch most of the Wood-Mice before I was able to catch 

 anything else. 



Most of them have pure white bellies, but a few have a 

 yellowish median line. 



Micromys minutus. Harvest Mouse. 



One was caught in the same rick as the Weasel, about a 

 mile behind the trenches. 



Epimys rattus. Black Eat. 



The Black Bat seems to be pretty common in the farm- 

 buildings, living in company with the Brown Bat. I have no 

 evidence that it has been found in the trenches. 



Epimys norvegicus. Brown Bat. 



A pest everywhere from the trenches backwards, although 

 possibly it has proved useful as a scavenger. 



Mas masculus. House Mouse. 



I cannot conclude without tendering my great thanks to Mr. 

 Oldfield Thomas, F.B.S., of the British Museum, for all his 

 help and encouragement to a beginner in the study of small 

 mammals. 



