33 



PRELIMINARY CHECK-LIST 01' THE LAND AND FRESH 



WATER MOLLUSCA OF CANADA. 



By Rev. Geort;e W. Taylor, Victoria, B.C. 



Ill the March number cf the Ottawa Naturalist I published a 

 request for information to enable me to compile a complete Check-list 

 of the Canadian Land and Freshwater Mollusca, showing the distribu- 

 tion of each species. 



It has since occurred to me that the gathering of records may be 

 made easier by the jjublication of a preliminary list. This is printed 

 herewith. It contains the names of all those species of the occurrence 

 of which in Canada I have fairly reliable information. 



It does not, however, lay claim to completeness or even to absolute 

 correctness as flir as it goes, for I have in more than one instance 

 allowed names to remam which are most probably synonyms, and I 

 Iiave retained other names because they have appeared on published 

 lists though I sus|.ect the specimens on which such records were found- 

 ed may have been wrongly identified. 



Imperfect though it be the list will serve as a basis for future work, 

 and corrections and additions can be made from time to tiine. 



Of the 244 species here enumerated, 12S (47 Land and 40 Fresh- 

 water Univalves, and 41 Freshwater Bivalves) are on record from the Otta- 

 wa district : 57 (32 Land and 16 Freshwater Univalves, and 9 Freshwater 

 Bivalves) are of my own collecting in Vancotiver Island (19 of these 

 being also on the Ottawa list). The remaining 79 (29 Land and 14 Fresh- 

 water Univalves, and 36 Freshwater Bivalves) are from other parts of 

 the Dominion. Probably 20 or 30 others may be added to the list. 



check-list. • 



A. — Freshivater Bivalves. 



1 Sphgerium sulcatum. Lam. 8 Sphaerium patella, Gould. 



2 " aureum, Prime. 9 " Vermontanum, Prime. 



3 " solidulum. Prime. 10 " emarginatum, Prime. 



4 " striatinum, Lam. 1 1 " flavum, Prime. 



5 '' stamineum, Conrad. 12 " tumiduin, Baird. 



6 " rhomboideum. Say. 13 " spokani, Baird. 



7 '' occidentale. Prime. 14 " partumeium. Say. 



