414 



CALIFORNIA ACADEMY OF SCIENCES. 



Niicula obliqaa 96 



suprastriata 18, 21, 27, 31, 30, 62, 72, !)6 



(Nucula) suprastriata 96 



tenuis 96 

 Nuculacea 72, 95 

 Nuculidas 72, 95 

 Nuttallia 76, 168 



nuttalli 76, 168 



Obeliscos variegata 280 

 Ocinebra 80, 254 



barbareusis 19, 22, 43, 52, 80, 254, 259 



erinaceus 254 



foveolata 28, 43, 80, 255 



interfossa 15, 19, 22, 24, 25, 28, 43, 62, 80, 255, 

 259 



keepi 24, 43, 80, 256 



lurida 25, 43, 62, 80, 256, 257 



var. aspera 19, 22, 24, 25, 28, 31, 43, 52, 



55, 80, 257 



var. cancelliua 28, 43, 80, 257 



var. cerritensis 19, 22, 25, 31, 43, 80, 258 



var. nrnnda 19, 43, 80, 258 



micheli 25, 43, 80, 259 



perita 19, 24, 25, 28, 43, 52, 62, 80, 254, 255, 259 



poulsoni 19, 22, 24, 25, 28, 31, 43, 62, 80, 260 

 Oilostomia 82, 281 



{Evalea) aequisculpta 284 



(Oscilla) sequiscrilpta 284 



(Chrysallida) diegensis 284 



(Evalea) elegaus 281 



gouldii 19, 22, 43, 52, 55 



(Evalea) gouldii 282 



(Oscilla) grammatospira 285 



jnsculpta 281 



interstincta 281 



(Evalea) lirata 284 



nuciformis 283 



var. avellana 19, 43, 52, 55, 62, 283 



(Amaura) nuciformis var. avellana 283 



plicata 281 



(Amaura) pupiformis 283 



sandvicensis 281 



satura var. pupiformis 283 



(Evalea) stearnsii 282 



tenuis 22, 23, 28, 43, 55, 62, 82, 281 

 var. gouldii 282 



(Ivara) terricula 285 



unideutata 281 

 CEdalia subdiaphana 153 

 (Edalina subdiaphana 153 

 Olivella 79, 219 



biplioata 15, 17, 19, 22, 24, 25, 28, 31, 32, 33, 43, 

 52, 55, 56, 62, 79, 219, 220, 221 



bcelica 57, 221 



iutorta 15, 19, 22, 24, 25, 28, 31, 32, 33, 44, 55, 



56, 62, 79, 220, 221 



pedroaua 15, 19, 22, 24, 25, 28, 31, 32, 44, 55, 



57, 63, 79, 220, 221 

 uudatella 219 



OlividiB 79, 219 

 Omphalius 84, 327 



/uvescens 327 



lirjulatus 327 



pfeifferi 326 



viridulnm var. ligulatum 84, 327, 339 

 Ondina 281 



sulcata 281 

 Opalia 81, 266 



anomala 58, 63, 81, 266 



borealis 28, 44, 81, 266 



corouata 266 



creuatoides var. iusculpta 44, 81, 267 



varicostata 58, 63, 81, 267 

 Opisthobrauchiata 77, 188 

 Opsichitouia 85, 343 

 Oscilla 82, 284 



ivquisculpta 82, 284 



grammatospira 82, 285 

 Ostracea 72, 102 

 Ostrea 57, 72, 102 



conchaphila 49 



edulis 102 



lurida 18, 21, 25, 27, 31, 32, 37, 49, 56, 63, 72, 

 102 

 var. expansa 102 

 var. rufoides 102 



maxima 103 



veatchi 63 

 Ostreidai 72, 102 

 Oudardia butloni 157 



Pachydesma crassatelloides 143 

 Pachypoma 84, 321 



caelata 321 



gibberosum 321 



inaiquale 22, 23, 25, 28, 44, 84, 321 

 Paludestriua 83, 305 



curta 22, 23, 28, 44, 83, 305 



piscium 305 



stokesi 22, 23, 28, 44, 83, 305 

 Pandora 73, 123 



(Kennerlia) bicarinata 123 



bilirala 123 



(Kennerlia) filosa 124 



punctata 124 

 Pandoridaj 73, 123 

 Panomya 77, 183 



ampla 15, 37, 65, 77, 183 

 Panopea 76, 182 



estrellann 182 



geuerosa 15, 18, 23, 27, 31, 37, 52, 68, 76, 178, 182, 

 183 

 var. globosa 182 

 var. solida 182 



norvegica 183 



(Mya) norvegica 183 

 Paracyatlius 71, 88 



caltha 88 



humiliii 88 



