170 PROCEEDINGS OF THE ACADEMY OF [May-Oct., 



only a small portion of the fauna of the Department, which is cer- 

 tainly one of the richest and most interesting in France, giving asylum 

 on the plains and lowlands near the coast to mollusks requiring a 

 warm habitat; while on the mountains and the high ranges species 

 peculiar to cold and very cold regions find a congenial home. 



