most thoroughly explored for marine species ; and Aroos- 

 took, Cumberland, Oxford, Knox, Penobscot, York and Han- 

 cock counties for land and fresh-water species. Little or no 

 collecting has been done in Androscoggin, Franklin, Sagadahoc, 

 Washington, Waldo or Somerset counties. 183 species have 

 been reported from Casco Bay, 146 from near Eastport, 137 

 from Frenchman's Bay and 81 marine species from Penobscot 

 Bay. The following table will show at a glance the distribution 

 of species by counties, including all known records of land and 

 fresh-water species in Maine. 



It is with the hope of stimulating further research, especially 

 in those counties where little or no work has been done, and 

 thus extending our knowledge of the distribution of the shells of 

 Maine, that this list is published. Hoping to publish a revised 

 list later on, we shall be glad to receive specimens or records of 

 shells from all sections of the State. 



N. W. LERMOND. 



Thomaston, R. F. D., December 21, 1908. 



