DIVISIONS OF THE LINNEAN GENERA. 



Linnean Genera. 



Lamarckian Genera. 



Plate. 



31. Haliotis 



33. Dentalium. 



34. 



52. Patella <j 



f Nerita 36 



J Navicella 37 



30. Nerita *\ xt •.• oc 



j Neritina 35 



LNatica 31 



< Haliotis 36 



^ Stomatia 36 



Patella 37 



Lingula 12 



Umbrella 38 



Parmopliora 38 



Emarginula 38 



Fissurella 38 



Pileopsis 37 



Calyptrsea 37 



Crepidula 37 



Ancylus 37 



.Stomatella 37 



Dentalium 38 



f Serpula 38 



j Siliquaria 38 



j Spirorbis 38 



Serpula ■{ Vermilia 38 



] Aspergillum 38 



I Septaria 38 



|0 JL Vermetus 38 



35. Teredo j ^^""""^^ ^^ 



< Fistulana 38 



Figure. 



64 

 9 



31 

 1 



1—17 



18—21 



27 



45&46 



85 



84 



86 



98 



41 



1 



10 



54 

 1—15 



3Q 



26 

 8 

 9 



34 

 -Teredo 



25 

 2 

 4 



