APPENDIX III. 



LIST OF FRESHWATER MOLLUSCA FROM MANITOBA 

 AND THE VALLEY OF THE NELSON RIVER. 



The following list includes some species collected in Manitoba, which 

 Mr. Whiteaves, of the Geological Survey, has kindly determined. 



Lamellibranchiata. 



L Unio rectus, Lamarck. Red River, Manitoba. 



2. Hyridella {?) radiata, Lamarck. Numerous in Lake Winnipeg and 



the Nelson River. 



3. Hyridella liiteola, Lamarck. (=zUnio siliqiioideus, Barnes.) Red 



River, Manitoba. 



4. Lampsilis flavus, Ratinesque. (^Unio rubiginosus, Lea.) Red 



River, Manitoba. 



5. Theliderma qiiadndus, Rafinesquc. (z^Unio lachrymosus, JjCh.) Red 



River, Manitoba. 



6. Dysnomia plicata, Lesueur. Red River, Manitoba. 



7. Metaptera alatus, Say. Red River. Manitoba. 



8. Complanaria complanata, Barnes. Common in the Nelson River, 



but larger and tiner in the Red and Assiniboine Rivers. 



9. Strophitus Pennsylvanicus, Lamarck. {^Anodonta undulata, Say.) 



Lake Winnipeg and Great Playgreen Lake. 



10. Anod/mta (Sp. uncertain.) Red River at Winnipeg. 



Nos. 4, 5 and «> are characteristic Western species. 



11. Sphcerium tra?isoersuni, Say. ^ Both found in numbers in the 



[- stomachs of sturgeon caught in 



12. Sphcprium striatinum, Lamarck. ) Great Playgreen Lake. 



Gasteropoda. 



13. VaLcata {Trojndina) tricarinata, Say. i-'ound in the stomachs of 



sturgeon caught in Great Playgreen Lake. 

 5 



