ScHARFF — On the Origin of the European Fauna. 439 



are now left, the mass of the less hardy species having been destroyed 

 by the climatal changes of the Glacial Period. 



These views cannot possibly be upheld any longer. Ireland may 

 have had a southern extension as far as Spain in early Tertiary times, 

 though, as far as I know, no geological proof can be adduced to 



2. — Map of the Britisli Islands during Pre-Glacial Times. The shaded parts 

 represent the sea and lakes, the light parts the land. (Elvers have 

 only heen inserted on the west coast). 



support such a view. But it is a mistake to suppose that the 

 Lusitanian flora, and, as we know now, it is accompanied by a similar 

 fauna, is peculiar to Ireland. Fragments of it occur, undoubtedly, in 

 the south-west of England, in the Channel Islands, and along the west 



