THE NAUTILUS. 89 



FRESH WATER SHELLS IN MOOSE RIVER, SOMERSET COUNTY, MAINE. 



BY OLOF O. NVLANDER. 



Moose River is made up of many lakes and is the main trib- 

 utary to Moosehead Lake. I have visited this part of Maine twice 

 to make collections of the lower Devonian fossils, and in explor- 

 ing the lake shores for long distances I have had favorable 

 opportunity to also collect some of the recent shells. 



Anodonta maryinata Say, Common in Brassua Lake, and 

 Long Pond. 



Alasmidonta undulata Say. One living specimen from Brassua 

 Lake and a few dead shells in Long Pond, it seems to be quite 

 rare. 



Unio complanatus Sol. Plentiful in the above lakes. 



Sphsermm. sulcatum Lam. One large specimen and many 

 small ones from the South and of Brassua Lake. 



Musculium secure Prime. A few dead shells in Misery stream, 

 a tributary to Moose River. 



Campeloma decimm Say. Common in Brassua Lake. 



Amnicola. limosa Say. Common on aquatic plants in the 

 Lakes. 



Lymntea emargimta^ var. migheki W. G. Binney. On the east 

 side of Brassua Lake above the outlet, on a rocky shore a colony 

 of this interesting shell was discovered, a dozen living specimens 

 were collected and about the same number of dead ones. They 

 all compare very well with the large form obtained at Square 

 Lake inlet, some years ago. All of the specimens were the var. 

 mighelsi, no young shells were seen, only old and full grown 

 specimens. 



Planorb is bicarinatus Say. Common in Brassua Lake, a few in 

 Long Lake, and at Baker Brook Point, Moosehead Lake. 



Planorbis companulatus Say. Dead shells were quite common 

 at the south and of Brassua Lake. 



By any one having time to work in this part of Maine, I 

 think many interesting things might be found. 



