394 



INDEX. 



Page. 



Mya 353 



Mycetopus 318 



Mytilus 289 



Naiads 314 



Nautilus 43 



Navicella 158 



Neritacea 157 



Nerites 160 



Neritina 159 



Nucleobranchs 194 



Nucula 326 



Nymphs 338 



Octopus 42 



Oliva 94 



Onychoteutliis 44 



Orbicula 389 



Ostrsa 246 



Ovulum 78 



Oysters 247 



Oyster Beds 249 



Paludina 163 



Pandora 355 



Panopaea 360 



Paper Nautilus 53 



Parasitica 134 



Parmacella 191 



Page. 



Parmophorus 215 



Patella 227 



Pearls 271 



Pectens , 264 



Pectiuibranclis 73 



Pectunculus 324 



Pedum 259 



Peristomata 162 



Periwinkle 140 



Pema 270 



Petricola 346 



Phasianella 139 



Pholadomya 363 



Pholas 365 



Physa 167 



Pileopsis , 213 



Pinna... 299 



Placuna 253 



Placunanomia 253 



Planorbis 167 



Pleurobrancbus 199 



Plicacea 150 



Plicatula 267 



Priamus 107 



Psammobia 339 



Pterocera 110 



