12 



Fig. 

 16 



Bulla striata 19 



21 



22 



Bulla fragilis 23 



25 



Bulla fasciata 27 



28 



Pyrula Ficus 29 



30 



Pyrula papyracea 31 



Achatina Glans 34 



fusco-lineata 35 



36 



Physa fontinalis 37 



38 



Physa Hypnorum 39 



Terebellum subulatura 41 



42 

 43 



Ancillaria Candida 44 



Achatina virginea 45 



Vexillum 46 



49 

 50 



Achatina Priamus 51 



Bulimus undatus 52 



Achatina Perdix 53 



■ purpurea 54 



-bicarinata 55 



Bulla solida 56 



57 

 58 

 59 

 60 

 61 



VOLUTA. PI. 19. Fig. 



Auricula Midae 1 



Judae 2 



3 

 4 

 5 



Auricula Sileni 6 



7 



8 



9 



10 



Tornatella fasciata 11 



. flammea 12 



solidula 13 



14 



Auricula coniformis 15 



16 



Auricula Monile 17 



18 

 19 



Auricula nitens 20 



21 

 22 

 23 

 25 

 27 

 28 



Oliva porphyria 29 



erythrostoma SO 



31 

 32 



Oliva leucophaea 33 



34 

 35 

 36 



Oliva Utriculus 37 



