XX 



DIVISIONS OF THE LINNEAN GENERA. 



Linnean Genera. 



Lamarckian Genera. 



Plate. 



80. Nerita 



31. Haliotis, 



33. Dentalium 



34. Serpula 



35. Teredo 



fNerita 36 



J Navicella 37 



] Neritina 35 



LNatica 31 



< Haliotis 36 



* Stomatia 36 



Patella 37 



Lingula 12 



Umbrella 38 



Parmophora 38 



Emarginula 38 



. Patella < 



Fissurella 38 



Pileopsis 37 



Calyptrsea 37 



Crepidula 37 



Ancylus 37 



Stomatella 37 



Dentalium 38 



f Serpula 38 



j Siliquaria 38 



I Spirorbis 38 



Vermilia 38 



Aspergillum 38 



Septaria 38 1-Teredo 



w Vermetus 38 25 



c Teredo 38 2 



I Fistulana . .38 4 



