Xll 



SYSTEMATIC INDEX. 



Phasianella 

 Ampullaria 



Lanista 



Helicina 



AmpulUna 



Olygira 

 Melania 



Rissoa 



Melanopsls 



Pirena 

 Actseon 

 Pyramidella 

 Janthina 

 Nerita 



Natica 



Nerida proper 



Velata 



Neritina 



Clithon 

 Capuloiba 

 Capulus 

 Hipponyx 

 Crepidula 

 Pileolus 

 Septaria 

 Calyptraea 

 Siphonaria 

 Sigaretus 

 Coriocella 

 Cryptostoma 



BUCCINOIDA 



Conus 



Cyprsea 



Ovula 



Ovula proper 

 Volva 

 Terebellum 

 Voluta 



Oliva 

 Volvaria 

 Voluta proper 

 Cymbium 

 Voluta 

 Marglnella 

 Colombella 

 Mitra 



Cancellaria 

 Buccinum 



Buccinum proper 



Nassa 



Eburna 



Ancillaria 



Dolium 



Dolium proper 376 



Perdix 376 



Harpa 376 



Purpura 375 



Monoceros 376 



362 

 362 

 362 

 363 

 363 

 363 

 363 

 363 

 363 

 364 

 364 

 364 

 364 

 365 

 365 

 365 

 365 

 365 

 366 

 366 

 366 

 366 

 367 

 367 

 367 

 368 

 368 

 368 

 369 

 369 

 369 

 370 

 370 

 371 

 371 

 371 

 371 

 372 

 372 

 372 

 373 

 373 

 373 

 373 

 373 

 374 

 374 

 374 

 374 

 375 

 375 

 375 

 375 



