250 



CALIFORNIA ACADEMY OF SCIENCES [Proc. 3d Ser. 



Lagena (?), 193 

 Lamellibranchiata, 194-8 

 Lamna clavata, 177 

 Leda oregona, 173, 188 

 Lucina acutilineata, 172 



borealis, 170, 176, 17"^ 



richthofeni, 170, 187 88 



species, 172 

 Lunatia horni, 166 

 Lytoceras sacya, 161 

 Macoma nasuta, 176, I'l ) 



secta, ISO 



species, 170 

 Mactra (Spisula), species, 172 

 Mactra catilliformis, 177 



falcata, 176, 177, 180, 181, 188 



densata, 172, 180 



species, 166, 183, 188 

 Margaritana subangulata, 182 

 Meretrix horni, 164, 166 



uvasana, 165, 166 

 Metis (Lutricola) alta, 177, 180 

 Modiola ornata, 166 

 Morio tuberculatus, 166 

 Mulinia densata, 184 

 Mya arenaria, 179 

 Mytilus californianus, 176, 177 



mathewsoni, 170, 186, 187 



species, 179 

 Nassa arnoldi, 188, 204 



californica, 180 



perpenguis, 204 



species, 177, 180 

 Natica, species, 172, 180 

 Nerita triangulata, 166 

 Neverita callosa, 170, 171, 172, 187, 188 



globosa, 164, 165, 166 



recluziana, 176, 177, 180 

 Nodosaria, 193 

 Oliva californica, 1S7, 188, 201 



futheyana, 201 

 Ostrea attwoodi, 179 



aviculiformis, 166, 194 



idriaensis, 165, 166 



sellaefonnis, 195 



species, 176 

 Oxyrhina tumula, 177 

 Pachydesma inezana, 188 

 Pesten coalingaensis, 179, 180, 197 



crassicardo, 171, 180, 181 



discus, 169, 171, 172, 176, 177, 

 185, 188 



estrellanus, 172, 176, 177, 187 



etchegoini, 180, 198 



nevadensis, 169, 187 



oweni, 180 



pabloensis, 181 



peckhami, 169, 173 



wattsi, 180, 198 



species, 166, 170, 183, 187 

 Pectunculus scptentrionalis, 179, 180, 



181, 197 



veatchi, 161 



species, 188 

 Perissolax brevirostris, 161 

 Physa costata, 182 

 Placuanomia inornata, 166 

 Planorbis tumens, 182 

 Pleurotoma (Clathurella) dumblei, 188, 



204 

 Pleurotoma (Surcula), species, 180 

 Polymorphina (?), 193 

 Pomatiopsis intermedia, 182 

 Pseudocardium gabbi, 179, 184 



species, 176, 180 

 Pulvulina, 193 

 Purpura, species, 177 

 Sagrina, 193 



Saxidomus aratus, 180, 181 

 Scaphander jugularis, 187, 188, 201 

 Scutella gibbsi, 180, 181 



species, 166, 171, 179, 183, 193 

 Sigaretus planicostum, 204 



scopulosus, 188, 203 

 Sinum scopulosum, 203 

 Solen paralellus, 164 



sicarius, 188 



species, 170, 176, 188 

 Sphaerium dentatum, 182 

 Spondylus carloaensis, 165, 166, 194 

 Tamiosoma, 176 

 Tapes staleyi, 180 



tenerrima, 176, 177 



species, 170, 172 

 Tellina congesta, 173 



ocoyana, 188 



species, 106. 180, 188 

 Terebra cooperi, 188, 203 



wattsiana, 203 

 Terebratella, 165 



species, 166, 180 

 Trochita filosa, 187, 188 



species, 176 

 Trochosmilia striata. 166 

 Trophon gabbiana, 176, 203 



kernensis, 18.8, 202 



ponderosum, 180, 202, 203 



species, 176, 177 

 Turritella hofFmanni, IRS 



ocoyana, 171, 172, 183, 187, 188 



pachecoensis, 164, 166 



uvasana, 164, 165, 166 



species, 176 

 Vaginulina, 193 

 Venus (Chione) conradiana, 195 



pertenuis, 195 



temblorensis, 172, 188, 196 

 Venus (Mercenaria) pertenuis, 188 

 Yoldia cooperi, 170 



impressa, 188 

 Zirphaea dentata, 176, 177 



species, 172 

 Zygobates, species, 177 



