Teftaceorum agri Fridrichsdalcnfis , &c. 



Nerita fphwrua Ancylus hciiftris 

 pifchtalis 



jacnlator Tellina rivalif 



cmitorta amnica 



Jluviaiilis tacujlris 



Valvata crijlata MyTiLtus anatims. 



Tefiacea finifirorfa. 



Helix hvipes 



cicatricofa 

 pomaria 

 varica 

 Jiiiiftra 

 inverfa 

 conlraria 

 lceva 



qiiadridens 

 bidens 

 perverjh 

 papillaris 



Vertigo pifilla 

 BucciNUM columna 

 Planorbis contrariiis 



bulla 



turritus 

 geiatinus. 



INDEX I. 



