J 21) 



CAUFOKNIA ACADEMY OK SCIENCES. 



TiirboDilU gilib»i>n 19, 46 



(P}r(;i«l«ui|)ro«) K>l>l>o8a 27(1 



lAiiiiunta I!), 22. 28. 31, 4t>. .Vi 



( Pyr);iiioulti(l laiuiuKtn 277 



latifundia 40 



(l*yrt(isoii8) latifundia 27.'> 



lowei 19. 22, 28, .SI, 46, 27!> 



(ryrgnlniupros) lowei 278 

 vnr. pedroana 279 



mexicaUA 280 



iiiiiricata 10, 22, 46 



(Stridturbonillii) murioatn 270 



pentalopha 19, 46 



(Lanceal pentalopha 274 



plicntula 269 



flirntulut 269 



Bimilis 19, 22, 31, 46 



(StriotnrboDilla) gimilie 270 



stearnsii 22. 23. 28. 31, 46, 270, 271 



(SlriotMrhonilln) stearnsii 271 



Bubcuspidata 19, 22. 28, 31. 46 



(Pyri^iscus) subcuspidata 277 



teuuicula 19. 22, 28, 31. 46, 276 



(Pyrgiscus) tenuicula 275, 276 



torqiiata 19, 46. 272 



var. stylina 19, 22, 46, 271 



(Striotarbonilla) torqnata 271 

 var. styliua 272 



tridentata 19, 22, 31, 46, 52, 273 



(Lancea) tridentata 273 



typica 269 

 Turcica (Plijchatylh) cnfi-n ,327 

 Turckula citlnrix 3.34 

 Tarritella 83, 300 



apicalis .300 



cooperi l.i, 17. 19, 22. 24, 25. 28, 31, .32, 46, M. 

 55. 56, 57, 64, 83, .300, 301 



jewettii 15, 19, 24. 25. 28, 46, 83, .300, .301 



unngiihiea .300, .301 



terebra ,300 

 Tnrritellida> 83, 300 



Drolophcs 85. .346 



balleri 28, 47, 85. 346 

 Urotalpinx cnncfllinus 257 



VeDlIB rnrl'Zi 147 



HiulifraKa 27, 147 



(Chioiie) fluctiriasa .38, 147 



i/ibboAittn 147 



Kiiidia 27, 67, 147 



(Cliioiii') giiidia .38, 147 



kmnrrlryi 146 



lamcllifera 149, I.W. l.'iS 



la]>ioida 154 



mnximn I.*) I 



ueglecta 27, 31, 148 



(Chione) ncglccla .38, 148 



nullaVi 149 



perlamiiKiiia 51, ,')2, 75, 146 



ri.jidn 150, 151 



rysonin 153 



»ecuris 149 



simillima 15, 18, 23, 25, 27, 31, 148 



(Chioue) simillima 38, 148 



ulnminm 150 



Buccincta 23. 2'., 27. 31, 149 



(Chione) succincta .38, 149 



triiilillus 153 



verrucosa 146 

 VermetidiP 83, 299 

 Vtrmdua si/iinini(icriii> 299 

 Vermicularia 19, 46, 83, 299 

 Vertebrata 85, 346 

 Verticordia 73. 126 



cardiiformis 126 



novemcostata 18, 38, 73, 126 



oniain 126 

 Verticordiidif 73, 126 

 Vitrinella 64, 85, 335 



anomala 3,35 



williamsoni 19, 28, 46, 85. 335 

 I'll uf aria anprrn 257 

 Vola 57 



detitala 104 

 i'otvaria nlhn 192 

 Volvarina 79. 222 



varia 19, 22, 24, 25, 28, 31, 46, 64, 79, 222 

 Volvula 77, 191 



acumiuator 191 



cylindrica 19, 46, 64, 77, 191 



Veneracea 74. 142 

 Venericardia 74, 128 



barbareusis 15, 17, 18. 25, 27, 32, 38, 52, 74, 128 



borealis 57 



var. rrntriroia 128 



planicostata 128 



ventricosa 15, 17, 18, 38, 52, 56, 57, 64, 128 

 VeneridiP 74, 142, 147 

 Vencrinip 74, 142 

 V'nfrupii rorditri 155 

 Venna 75, 146 



bisfcla 1 35 



hrevitineala 149 



ralifornica 149 



callota 145 



YoLiiiA 72, 99 



amygdala 100 



arctica 99 



cooperi 27, 38, 55, 64, 72, 99. 100 



impresan 99 



myalis 99 



scissnrata 18, 38, 72, 99, 100 



ZiHPHXA 77, 183 



criipnia 56, 184 



gabbii 23, 2.'5, 27, 31, .32, .38, 56, 77, 184 

 Zizyphinux aiutulatus .329 



canaliculalus 329 



Jilosus 330 

 Zygobranchia 85, 336 



