Illustrations of the Anatomy and of Shells 



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 5 



503 



12 



13 



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% 6. 



16 



^ 



17 



J^ 



34 



m 



18 



19 



20 



21 



22 



23 





25 



26 



35 27 



PLATE 133 



28 



29 



30 



31 



32 



33 



36 



• 



37 



38 



fti ^ 



39 



• 



40 



