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THE MOLLUSCA OF GEORGIAN BAY III 



SESSIONAL PAPER No. 39b 



EXPLANATION OF PLATES. 



/ PLATE X. 



}. Planorbis campanulatus, Say, x2i. 

 J. Planorbis hirsutus, Gould, x3. 



3. Planorbis exacuous, Say, x3. 



4. Lymnsea haldemani, (Deshayes) Binney, x3. 



5. Planorbis bicarinatus. Say, x2. 



6. Planorbis trivolvis, Say, xlj. 



7. Lymnsea decollata, Mighels, x3. 



8. Lymnsea palustris, MuUer, x2. 



9. Amnicola limosa. Say, xl^. 

 10. Amnicola lustrica, Say, xl^. 



IL Sphserium simile, Lamarck, xH. ' 



12. Sphserium rhomboideum, Say, xl h. 



13. Sphserium (Musculium) securis. Prime, x3. 



PLATE XI. 



14. Lymnsea emarginata canadensis, Sowb, x2. 



15. Lymnsea columella. Say, x3. 



16. Goniobasis livescens, Menke, x2. 



17. Ancyliis parallelus, Hald, x3. 



18. Lymnsea stagnalis sanctaemariae, Walker, x2. 



19. Physa ancillaria. Say, x3|. 



20. Campeloma decisum, Say, xl^. 



21. Valvata tricarinata. Say, 3^. 



22. Valvata sincera. Say, 3^. 



PLATE XII. 



23. Lampsilis luteolis, Lamarck, x|. . 



24. Series, lamellar to pyramidal teeth in Lampsilis luteolis, Lamarck, xj. 



25. Anodonta grandis, Say, xf. 



26. Lampsilis luteolis, Lamarck, xf. 



27. Anodontoides ferussacianus, Lea, xf . 



28. Anodonta grandis, Say, x|. 



'29. Unio complanatus, Solander, xf . 

 30. Lampsilis luteolis, Lamarck, xf . 



A 



