APPENDIX III. 



LIST OF FRESH-WATER 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. 



1. Unio rectus, Lamarck. Red River, Manitoba. 



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



the Nelson River. 



3. Hyridella luteola, Lamarck. (=Unio siliquoideus, Barnes.) Red 



River, Manitoba. 



4. Lampsilis flavus, Rafinesque. (=Unio rubiginosus, Lea.) Red 



River, Manitoba. 



5. Theliderma quadrulus, Rafinesque. (z=zJJnio lachrymosus, Lea.) Red 



River, Manitoba. 



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

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



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



but larger and finer in the Red and Assiniboine Rivers. 



9. Strophitus Pennsylvanicus, Lamarck. (=Anodonta undulata, Say.) 



Lake Winnipeg and Great Playgreen Lake. 



10. Anodonta (Sp. uncertain.) Red River at Winnipeg. 



Nos. 4, 5 and 6 are characteristic Western species. 



11. Sphoerium transversum, Say. ") Both found in numbers in the 



>• stomachs of sturgeon caught in 



12. Sphoerium striatinum, Lamarck, j Great Playgreen Lake. 



Gasteropoda. 



13. Valvata (Tropidina) tricarinata, Say. Found in the stomachs of 



sturgeon caught in Great Playgreen Lake. 

 5 



