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THE OTTAWA NATURALIST. 3r*"% 



Vol. XX. OTTAWA, MAY, 1906. No. 2 



LIST OF SOME FRESH- WATER SHELLS FROM 

 NORTH-WESTERN ONTARIO AND KEEWATIN.* 



By J. F. Whiteaves. 



(A.) From the English River, in North-western Ontario 

 above Lac Seul ; collected by W. Mclnnes, of the Geo- 

 logical Survey of Canada, in /905. 



Pelecypoda. 

 * ' Sphcerium flavum, Prime. 



English River, below Manitou Fall ; one specimen. 



Gasteropoda. 



Planorbis ( Pierosoma ) corpulentus, Say. 



English River, below Manitou Fall ; three specimens, the 

 largest of which is fully an inch in its maximum diameter. 

 The adult shell of this species, which corresponds to the 

 variety macrostomus of P. Irivolvis, has not yet been described 

 nor figured. 



(B.) From various localities on the boundary between On- 

 tario and Keetvatin, or in Keewattn ; collected by W. 

 Mclnnes in igo$. 



Pelecypoda. 



Lamps His luteola (Lamarck). 



Albany River, between lakes St. Joseph and Eabemet ; five 

 specimens. 



* Communicated by permission of the Director of the Geological Survey 

 Department. The species with an asterisk prefixed to their names, have 

 been kindly determined bv Dr. V. Sterki. 



