3 



The Ottawa Naturalist. [May 



Anodonta Kcnnicotli (?) Lea. Var. 



Lake St. Joseph, one specimen ; Albany River, two speci- 

 mens; and West Branch of the Winisk River, two specimens. 



* Sphoerium flavum, Prime. 



Root River, Lac Seul ; one specimen. 



Sphcprium rhomboideum (Say). 



Lake St. Joseph, two specimens ; and Albany River, three 

 specimens. 



* Pisidium variabiles Prime. 



Like St. Joseph, at two localities, three specimens from each; 

 and Albany River, two specimens. 



* Pisidium Mainense, Sterki. 



Root River, nine specimens. 



* Pisidium "abditum, Haldeman." 



Albany River, thirteen specimens. 



*Pisidiu?n Roperi, Sterki. 



Albany River, five specimens. 



* Pisidium polilum, Sterki. 



Root River, one specimen. 



*Pisidium rotuudatum, Prime. 



Lake St. Joseph, one specimen. 



* Pisidium paupcrculum, var. crystalletisc, Sterki. 



Root River, one specimen. 



* Pisidium splendidulum, Sterki. Var. 



Lake St, Joseph, at two localities ; seven specimens. 



*Pisidium vesiculare, Sterki. 



Head of Lake St. Joseph, fourteen specimens. 



* Pisidium mediannm, Sterki. 



Lake St. Joseph, one specimen. 



"Pisidium milium, Held. Small var. 



Head of Lake St. Joseph, one specimen. 



