XI 



17. Modulus Gray . . 



18. Risella Gray . . 



19. Solarium Lamk. (Tori 

 nia) ..... 



20. Bifrontia Desh. 



21. Valvala Miill. . . 



13. Fam. Scalariacea 

 Scalaria Lamk. . . . 



14. Fam. Janihinacea 

 Jantliina Lamk. . 



15. Fam. Siylinacea 

 Slvlina Flem. 



16. Fam. Nalicarea 



Nalica Adniis. . 

 Cerniiia Gray . 

 Dcshayesia RauL 

 Sigarclus Lamk. 

 Araaura MüIL . 

 Lagunoula Bens. 



17. Fam,. Veluiinacea 



1. Velutina Gray . 



2. Ti iclioiropis Brod. el Sow 



3. Calcarella Sowb. . 



18. Fam. Naricacea 



1. Narica Becl. 



2. fs'criloitsis Gral. 



19. Fam. Xenophoracea 

 Xenophora Fisch, v. Waldh. 



20. Fam,. Calyplraeacea 



1. Dispotaca Say . . 



2. Crucibulum Schum. 



3. Milriilaria Schum. 



4. Trochita Schum. . 



5. Galerus Gray . 



6. Crepidula Lamk. . 



7. Capulus Moulf. (Ama 

 Ihina, Hipponyx, Sabia) 



8. Spiricelia . . 



9. Brocchia Bronn 

 10. Pedicularia Swains. 



21. Farn. Ringiculacea 

 1. Ringicula Desh. 



176 



177 

 178 

 179 



ISO 



181 



182 



183 

 184 



185 

 186 



187 



188 



189 

 190 



pag. 



2. Tylosloma Sharpe . 



3. Globiconcha d'Orb. 



22. Fam. Pyramidellacea 



1. Pyramidella Lamk. 



2. Odontostoma Flem. 



3. Jfonoptygma Gray . 



4. Turboniila Risso 



5. Ncrinca Defr. 



23. Fam. Eullmacea . 



1. Eulima Risso (Niso) 



2. Subulites Conr. 



3. Aclis Loven 



4. Rissoella Gray , . 



24. Fam. Vermelacea 



1. Vermctus Adans. . 



2. Magilus Monlf. . . 



3. Sili(|uaria Brug. 



25. Fam. Caecacea . 

 Caecum Flem. . . 



26. Fam. Siphonariacea 



1. Siphonaria Sow. 



2. Gadinia Gray 



27. Fam. Acmaeacea 



1. Acmaea Eschh. 



2. Lepeta Gray 



3. Jolhia Forbes 



IL Ordn. Sciitibian 

 cliia, Schildkieiner 



1. Fam. Nerüacea 



1. NeritaL. (Ncrilina, Chi 

 Ihon, Neripteron , Cly 

 peolum, Velates) . 



2. Navicella Lamk. 



3. Pileolus Sow. . . 



2. Fam. Trochacea . 



1. Phasianella Lamk. 



2. Turbo L. . . 



3. Liolia Gray . . 



4. Delphinula Lamk. 



5. Vitrinella Adans. 



6. Calcar Montf. . 



