35 



Pisidium streatori, Sterki. 



Hebron, Oxford county (John A. Allen). 

 Pisidium abditum, Haldeman,. 1841. 



Cyclas minor, Mighels and Adams, 1842. 



All over the State. 

 Pisidium politum, Sterki. 



Portage and Cross lakes, Aroostook county, rare 



(Nylander). 

 Pisidium subrotundum, Sterki. 



Aroostook county (Nylander). 

 Pisidium splendidulum, Sterki. 



Knox county (Lermond) ; Aroostook county (Ny- 

 lander). 

 Pisidium splendidulum var. 



Muddy duck pond in field, Warren, Knox county 



(Lermond). 

 Pisidium milium, Held. 



Aroostook county, seems to be rare (Nylander). 

 Pisidium imbecille, Sterki. 



Aroostook county (Nylander). 

 Pisidium rotundatum, Prime. 



Lincoln county (Mrs. Wentworth) ; Aroostook county 



(Nylander). 

 Pisidium ventricosum, Prime. 



Aroostook county (Nylander). 

 Pisidium vesiculare, Sterki. 



Aroostook county, rare (Nylander). 

 Pisidium ferrugineum, Prime. 



Reported from York, Oxford, Knox, and Aroostook 



counties. 

 Pisidium medianum, Sterki. 



Barren Brook bog, Aroostook county (in Bryant 



Walker's collection, received from Nylander). 

 Pisidium medianum var. minutum, Sterki. 



Aroostook county (Nylander). 

 Pisidium pauperculum, Sterki. 



Aroostook county (Nylander). 

 Pisidium pauperculum var. nylanderi, Sterki. 



Dredged off Oak Point, Portage lake, Aroostook 

 county (Nylander). 



