48 Observations on the Terrestrial 



Sphaerium striatinum, Lam. 



Sphaerium striatinum, Lam. var., acuminata. Prime. 

 Eagle Lakes, N. Lat. 47°. 



Sphaerium partumeium. Say. 

 Common. 



Sphaerium tenue. Prime. 



Androscoggin, Maine. (Prime.) 



Sphaerium securis, Prime. 

 Little Androscoggin River. 



Sphaerium truncatum, Linsley. 

 Maine. (Prime.) 



Pisidium Virginicum, Bourguignat. 



Pisidium Adamsii, Prime. 



Pisidium aequilaterale, Prime. 

 Augusta, Maine. (Prime.) 



Pisidium compressum, Prime. 



Augusta, Maine. (Prime.) 



Pisidium variabile. Prime. 

 Common in all ditches. 



Pisidium abditum, Haldeman. 

 With all its varieties, common. 



A few species of fresh water Polyzoa have been observed in 

 the State, but not having the means for their proper identification 

 I cannot present them. 



