PREFACE 
Prefaces to books are perhaps becoming more and 
more out of fashion, still we would wish to say a few 
words on the scope and intentions of this volume. 
To begin with, this is the first volume of a series (i.e. 
should this, our first attempt, meet with the approval we 
would wish) which, unlike most local Faunas, lays aside to 
a great extent political boundaries, and is marked out by 
others, much more natural, such as watersheds. This, we 
think, is a " new departure," but one which we imagine 
will commend itself to the favourable notice of most 
naturalists. 
We do not pretend to say that this is by any means a 
perfect Fauna of our district, but we do- claim, so far as our 
experience goes, that our records of distribution and migra- 
tion are facts, and based upon observations made for the 
last twenty years over the greater part of the district 
included. 
There are several reasonsjjsfhy we could not lay claim 
