INDEX 



343 



vernicosa 38 



Modiolus 35 



capax 36 



flabelliis 36 



fornicatus 36 



modiolus 35 



plicatulus 37 



Monia 53 



macroschisma . . 53 



Monoceros 181 



engonatum .... 181 



lapilloides 181 



lugubre 182 



Mopalia 258 



ciliata 260 



hindsii 259 



lignosa 259 



muscosa 258 



wosnessenskii ..260 



Murex 157 



carpenteri 167 



circumtexta . . . 168 



festivus 169 



foliatus 170 



incisus 169 



nuttallii 170 



Petri 168 



trialatus 168 



Musculium 305 



abditum 305 



compressum ...305 

 partumeium .,305 



raymondi 305 



rhvk61ti 305 



Mya 98 



arenaria 98 



hemphilli 99 



truncata 100 



Mysella 64 



aleutica 64 



Mvtilimeria 110 



nuttallii 110 



Mytilus 32 



bifurcatus 34 



californianus . . 32 



edulis 34 



glomeratus .... 34 

 stearnsi 34 



Myurella 130 



simplex 130 



Nassa 159 



californiana ... 161 



cooperi 161 



fossata 159 



insculpta 160 



mendica 161 



perpinguis 161 



tegula 160 



Natica 213 



clausa 213 



Nerera 98 



pectinata 98 



Norrisia 227 



norrisii 227 



Nucula 24 



carlottensis .... 25 



castrensis 24 



exigua 26 



expansa 25 



lurida 25 



suprastriata .... 25 

 tenuis 25 



Nuttallina 258 



californica 258 



scabra 258 



Ocinebra 173 



interfossa 173 



lurida 173 



michseli 175 



munda 174 



poidsoni 175 



Octopus 296 



Odostomia 186 



nuciformis .... 188 

 pupiformis .... 188 

 satura 188 



Olivella 138 



bjetica 142 



biplicata 138 



intorta 142 



pedroana 142 



Ommastrephes ..297 



gigas 298 



tryoni 298 



Omphalius 238 



fuscescens 238 



Onchidella 295 



borealis 295 



carpenteri 295 



Opalia 182 



Oreohelix 272 



castanea 273 



cooperi 273 



elrodi 273 



haydeni 272 



hemphilli 273 



idahoensis 273 



gouldi 273 



multicostata ...273 

 strigosa 272 



Ostrea 55 



expansa 56 



lurida 55 



rufoides 56 



titan 55 



virginiana 56 



Ovula 193 



barbarensis .... 193 



deflexa 193 



variabilis 194 



Pachydesma 76 



crassatelloides .. 76 



Pachypoma 226 



Paludestrina . . . .314 



imitator 315 



longinqua 314 



protea 315 



stearnsiana . . . .315 



Panopsea 101 



ampla ... 101 



generosa 101 



Paphia 82 



laciniata 82 



orbella 82 



petiti "^2 



ruderata 82 



staminea 82 



tenerrima 82 



Parapholas 115 



californica 115 



Patula 273 



solitaria 273 



Pecten 39 



?equisulcatus ... 39 



caurinus 40 



circularis 39 



davidsoni 42 



diegensis 40 



giganteus 43 



hastatus 41 



