NORTHWEST COAST MARINE SHELLB EARING MOLLUSKS. 207 



Page. 



Onchidiopsis 167 



Opalia 113 



Ostrea l? 



Ondardia 46 



Oxygyrus 139 



Paeftydesma 41 



Pochymcnia 190 



Pachypoma 172 



PaUochiton- _ 193 



25 



54 



'____. 54 



.- 42 



55 



35 



19 



18 



17 



140 



66 



24 



46 



151 



9 



44 



44 



35 



1_. 120 



171 



86 



79 



64 



17 



55 



66 



Pandora 



Panomya . — 



Panope 



Paphia 



Parapholas 



Parvihicina 



Patinopecten 



Pecten , 



Pcdalion 



Pedicularia , 



Pedipes , 



Pcriploma 



Peronidia , 



Petaloconchus 



Petrasma , 



Petricola 



Petricolaria 



Phacoides 



Pharcidella , 



Phasianella 



Phenacoptygma 



Philbertia , 



Pliiline 



Philobrya 



Pholadidea , 



Phytia , 



Piliscus 161 



Pinna , 17 



Pirenella 148 



Pitaria , 41 



PIacipho?-ella 196 



Plagioctenium , 19 



Plapjodon 53 



Plectodon 29 



Pleurobranchus 65 



Pleurodon , 14 



Pleurotomella 7S 



Plicifusus , 92 



Pneumodenna 60 



Pododesmus 21 



Polimices 164, 165 



Pomaulax , ]72 



Poromya 



Portlandia .- 



Potamides 



Progabbia 



Promartynia 



Propeamns'nim 



Protocardia 



Protothaca 



Provanna , 



Psammobia 



Psephidia 



Pseiidamusium 



Pseudochama 



Pseudomelatoma 



Pseudomurex 



Pseudopythina 



Pseudorotella 



Pteria . 



Ptcropurpura 



Ptychatractus 



Puncturella , 



Pupillaria 



Purpura , 



Pyramidella 



Pyrgiscus 



Pyrgolampros 



Pyrulofusus 



Retifusus 



Retusa 



Rexithaerus__. 

 Rh odopetala _ . 

 Rliombochiton. 



Rictaxis 



Rictocyma 



Ringicardium- 



Rissoina 



Rochefortia 



Roperia 



Page. 



27 



12 



148 



83 



175 



20 



40 



42-43 



149 



49 



44 



19 



33 



70 



113 



37 



183 



17 



106 



87 



185 



178 



106 



120 



125 



123 



89 



93 



61 



48 



171 



193 



60 



30 



39 



160 



37 



88 



Sabinella 119 



Salassiella 128 



Sanguinolaria 50 



Saxicava 55 



Saxicavella 54 



Saxidomus 42 



Scaphander 62 



Scapharca 16 



Schismope 183 



Schizoplax 189 



Schizopyga 102 



Schizothaerus 52 



Scissilabra iS2 



