Tafel VII. 



Ab. = Abdominalganglion. 

 Bu. = Buccalganglion. 



Ce. = Cerebralganglion. 



Co. = Commissuralganglion. 



Pe. = Pedalganglion. 



ot. = Otocyste. 

 Spr. Sp. = Mantelganglien. 

 Spr. = Supraintestinalganglion. 



Janthina planispirata Reeve et Ad. 

 Pileopsis hungaricus L. 

 Cyclostoma elegans Müll. 



Patella vulgata L. 



