20 



Fani. 2. Cyclostomacea. 

 Cyclostoma — Lara. 



Ordo 7. Ctenobranchia. 



Subordo 1. Pomatustoina. 

 Farn. 1 . Turbinea. 

 Paludina — Lam. 

 Melania — Lam. 

 Pleurop.s — Raf. 

 Pleurocera — Raf. 

 Oxytrema — Raf. 

 Campeloma — Raf. 



Farn. 2. Trochoidea. 

 Pileolus — Sow. 

 Septaria — Fer. 

 Neritiua — Lam. 

 Nerita — Lam. 

 Ampullaria — Lam. 

 Jantliina — Lam. 

 Phasianella — Lam. 



Fain. 3. Plicata. 

 PedipiLS — Adans. 



Subordo 2. Hemipomatostoma. 

 Farn. 4. Cerithiacea. 



Cerithium — Adans. 



Fani. 5. Buccinea. 

 Buecinum — Adaus. 



Fam. 6. Purpuracea. 



Series 1. Cauda naiia v 

 Purpura — Er. 

 Monoceros — Lam. 

 Concholepas — Lam. 

 Cancellaria — Lam. 



Series 2. Cauda exserta 

 Murex — Lam. 



Series 3. Cauda exserta 

 Turbinella — Lara. 

 Fasciolaria — Lam. 



Ellistoma — Raf. 

 Omphemis — Raf. 

 TruDcatella — Riss. 

 Rissoa — Freraino. 

 Litorina — Fer. 

 Turritella — Lam. 



Planaxis — Lam. 

 Turbo — L. 

 JVlunodoiita — Lam. 

 Delphiimla — Lam. 

 Solarium . — Lam. 

 Maclurites — Les. 

 Euvomphalus — Sow. 



Tornatella — Lam. 



Potamides — Bri 



ongn. 



Eburna. 



Lam. 



Vermetus — Adans. 

 Voivata — Müll. 

 Natica — Lam. 

 Rotella — Lam. 



Cirrus — Sow. 

 Trochus — Lam. 

 Telescopium — Montf. 

 Pleurotomaria — Defr. 

 Scalaria — Lam. 

 Melanopsis — Fer. 

 Pyrena — Lam. 



Pyramidella — Lam. 



