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GENUS TROCHISCUS. Sowerby. 



is Turbo rugosus, Linn. 



is Littorina Basterotii, Payr. 

 is Rissoa lactea, Mich. 

 Turbo hippocastanum, Lam. 

 argyrostomus maris-rubri. 

 Turbo echinatus, Gmel. 

 Helix viridis, Herbst. 

 Trochus sulcatus, Martyn. 

 Trochus Cookii, Gmel. 



is Rissoa costata, Demarest. 



is Trochus punctulatus, Martyn. 

 is Trochus unguis, Wood, 

 is Turbo chrysostomus, Linn, 

 is Turbo Fokkesii, Jonas. 

 Marmorostoma planospira,Jay. 

 Turbo fluctuatus, Reeve. 

 is Turbo smaragdus, Gmel. 

 is Turbo castaneus, Gmel. 



is Turbo torquatus, Gmel. 



