320 TABLE OF DISTRIBUTION. 



Zonites alliarius and Pupa ringens) , all the species which 

 occur in our upper tertiaries are northern forms, and 

 that very few are exclusively northern or southern. 



In the body of this work the term " North of Europe ^^ 

 has been used in the ordinary sense, and not with refer- 

 ence to the somewhat arbitrary line of demarcation 

 proposed in the foregoing Table. The authority can be 

 given for every locality ; but to have done this would 

 have taken a great deal of extra space and unnecessarily 

 encumbered the work. 



