XXVI 



XVII. Pinua .-• 



Pinna 



105 



XVIII. Areonauta 



TLimacina • 142 



•J Argonauta 308 



ICarinaria 310 



XIX. Nautilus 



" Orthoceras 302 



Nodosaria 303 



Spirula • . • • 303 



Cristellaria 304 



Nautilus ) 307 



XX. Conus Conus 



294 



XXI. Cyprasa 



XXII. Bulk 



Cyprae< 



284 



Bullaea . 160 



Acera 160 



Bulla 161 



Bulimus • 181 



Acbalina 183 



Physa 191 



Pyrula (some) 236 



Ovula 281 



I Terebelluni 290 



XX1U. Voluta 



' Auricula 186 



Ancilla 201 



Tornatella 208 



Turbinella 230 



Cancellaria • • 231 



i Columbella 268 



Mitra 269 



Voluta 272 



Marginella 278 



Volvaria 279 



Achatina 283 



Oliva 290 



