414 



CALIFOKNIA ACADEMY OF SCIENCES. 



Nncula obliqua 96 



suprastriata 18, 21, 27, 31, 30, 62, 72, 96 



(Nucula) suprastriata 96 



tejiuis 96 

 Nuculaeea 72, 95 

 Nuculida! 72, 95 

 Nuttallia 76, 168 



nuttalli 76, 168 



Obeliscus variegata 280 

 Ociuebra 80, 254 



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



eriuaceus 254 



foveolata 28, 43, SO, 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. cancellina 28, 43, 80, 257 



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



var. muuda 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 

 Odostomia 82, 281 



(Evalea) cequisculpta 284 

 (Oscilla) iequisculpta 284 

 (Chrysallida) diegensis 284 

 (Evalea) elegaus 281 

 gouldii 19, 22, 43, 52, 55 

 (Evalea) gouldii 282 

 (Oscilla) grammatospira 285 

 insculpta 281 

 interstincta 281 

 (Evalea) lirata 284 

 nueiformia 283 



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

 (Amaura) nuciformis var. avellana 283 

 plicata 281 



(Amaura) pupiformis 283 

 sandvicensis 281 

 aatura var. pupiformis 283 

 (Evalea) steamsii 282 

 tenuis 22, 23, 28, 43, 55, 62, 82, 28 1 



var. gouldii 282 

 (Ivara) terricula 285 

 unideutata 281 

 (Edalia suhdiaphana 153 

 (Edalina suhdiaphana 153 

 Olivella 79, 219 



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



52, 65, 56, 62, 79, 219, 220, 221 

 boetica 57, 221 

 intorta 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 

 undatella 219 



OlividiB 79, 219 

 Omphalius 84, 327 



fuvescens 327 



ligulatus 327 



p/eiferi 326 



viridulum var. ligiilatum 84, 327, 339 

 Ondina 281 



sulcata 281 

 Opalia 81, 266 



anomala 58, 63, 81, 266 



boreal is 28, 44, 81, 266 



corouata 266 



ereuatoides var. insculpta 44, 81, 267 



varicostata 58, 63, 81, 267 

 Opisthobranchiata 77, 188 

 Opsichitonia 85, 343 

 Oscilla 82, 284 



iequisculpta 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 

 Ostreid* 72, 102 

 Oudardia buttoni 157 



' Pachydesma crassalelloides 143 

 Pachypoma 84, 321 



carlata 321 



gibberomm 321 



infequale 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 

 Pandorida) 73, 123 

 Pauomya 77, 183 



ampla 15, 37, 65, 77, 183 

 Pauopea 76, 182 



estrellana 182 



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

 183 

 var. globosa 182 

 var. solida 182 



norvegica 183 



(Mya) norvegica 183 

 Paracyathus 71, 88 



caltha 88 



humilis 88 



