— 579 — 



Géneros y autores. J^P-t'^í®^ Especies paginas. 



admitidas, citadas. 



Nseera Oray 4 257 



Nerita Linné 38 +4 35 



Neritina Lamarck 57 -^ Ib 42 



Neritopsis Grateloup 1 52 



Norrisia Bayle ^ 1 90 



Caoba H. y A. Adams 4 28 



Oscanius Leach 1 243 



Pandora Bruguiere 1 258 



Patella Linyié 4 +1 228 



Papyridea Swainson 2 305 



Petricola Lamarck 2 +2 303 



Pharella Oray 2 251 



Phasianella Lamarck 3 -}- 1 76 



Philine Ascanias 2 241 



Pholas Linné 1 246 



Phylloda Schumacher 1 280 



Pirenella Gray 1 18 



Planaxis Lamarck 6 -\- 1 26 



Pleurobranchus Cuvier 1 243 



Potámides Brongniart 1 18 



Psammobia Lamarck 26 -1-2 267 



Psammotsea Lamarck 13 271 



Psammotellina Fischer 3 272 



Pyramidelloides Nevill 1 35 



Pyrazus Montfort 2 +2 17 



Quadrasia Crosse 1 27 



Quoyia Deshayes 1 27 



Rseta G^raz/ 1 260 



Retusa Brown 2 236 



Rimula Defrance 3 223 



Ringicula Deshayes 4 241 



Rissoina Orhigny 50 4-9 29 



Sangninolaria Lamarck 1 -j- 1 270 



Scaphander Montfort 1 236 



Schizochiton Oray 1 -|- ^ 231 



