THE OTTAWA t(ATURALIST. 



Vol. XVI. OTTAWA, JULY, 1902. No. 4. 



NOTES ON SOME FRESH-WATER AND LAND SHELLS 



FROM KEEWATIN, NORTHERN ONTARIO AND 



BRITISH COLUMBIA. 



Bv J. F. Whiteaves. 



The Museum of the Geological Surveyof Canada has recently 

 received several fresh-water shells, collected in the summer season 

 of 190 1, from the Ekwan (Equan) River, and Sutton (Trout) Lake, 

 Keewatin, by Mr. D B. Dowling ; from the Ontario side of Lake 

 Abitibi by Mr. W. J. Wilson ; and from Chilliwack and Sumas 

 lakes, in the New Westminster district of British Columbia, by Mr. 

 J. M. Macoun ; also a few land shells from the valley of the Chil- 

 liwack River, B.C., collected by Mr. Macoun in 1901. 



The following lists of the species represented in these collec- 

 tions are submitted as a contribution to our knowledge of the 

 geographical distribution of the inland mollusoa of Canada. 



A.- -Fresh-water shells. 



From the Ekwan River, Keewatin. 



Anodonta Kennicotti, Lea. Varieties. Eight specimens. 

 Anodonta rnarginata, Say ( = A.fragilis, Lam.). One specimen. 

 Lanipsilis lu/eola, var. ochracea, Dekay. Three specimens. 



From Sutton Lake, Keewatin. 

 Valvata tricarinata, Say. One dead and bleached specimen. 

 Valvata sincera, Say. w m ir 



Planorbis parvus, Say. n n n 



Limncea stagnalts, L. Two badly broken but fresh-looking 

 specimens. 



Limneea palustriSf Muller. Two specimens. 



