156 HISTORY OF THE EUROPEAN FAUNA. 



as I indicated, with the hordes of Siberian migrants 

 which invaded Europe during what is known as the 

 Inter-glacial phase of the Glacial period. Scan- 



FiG. 12.- Map of Europe, indicating the parts which were probably 

 submerged (shaded) at the commencement of the Glacial period. 

 The light portions represent, approximately, the extent of the 

 land at that time. 



dinavia, not being then directly connected with con- 

 tinental Europe, was not accessible to it; neither 

 was Ireland, which had by that time become dis- 



