INDEX. 



623 



Page. 



Ostrea inomata 14 



Ostrea intermedia 18 



Ostrea Jaeohaea '-'I 



Ostrea larva 15 



Ostrea lateralis 16 



Ostrea longirostris 12 



< M rea matereula 12 



Ostrea maximia 24 



Ostrea nobilissima 12 



Ostrea patercula 12 



Ostrea patina 18 



< Istrea pellucida 15 



Ostrea plumosa 510 



Ostreo subsinuata 18 



Ostrea subtrigonalis 510 



Ostrea, (undetermined species) 12 



Ostrea reticularis 20 



Ostreiixe 10,510 



Ostreum 10 



Ovalaires 214 



Oxytoma 29 



Oxytoma 28,31,34,35 



P. 



Pachycardium 171 



Pachy cardium 172 



Pachydon 241 



Pachydon 240, 243 



Pachydon obliqua 241 



Pachyodon 528 



l'aehytharus 115 



Pachythaerus 116 



Pagana 544 



PaUeoinera 193 



Paludina Conradi 570 



Pallidum Lcai 577 



Paludina Leidyi 582 



Paludina lineata 581 



Paludina multilineata 586 



Paludina peculiaris 580 



Paludina ponderosa 585 



Paludina retusa 578 



Paludina trochiformis 580 



Paludina rt tula 587 



Paludinella 571 



Panopwa 248 



Panopcea oecidentalis 250 



Panopea 248 



Paracyclas 132 



Patella 285,286,294 



Patelloidea 294 



Patoeeras 185 



Pecten 23 



Pecten bifrons 25 



Pecten Hallii 27 



Pecten Islandicus 23,25 



Pecten Jacobwus 24 



Pecten maximus 24,27,68 



Page. 



Pecten Xi brascensis 25 



Pecti n perplanns 26 



Pectenrigida 26,27 



Pecten scintilla! us 27 



Pecten simplicus 27 



Pecten venustus 26 



Pectinibkanchiata 303,558 



!'):< Tixm.i; 23 



Peclinida 28 



Peetunculina 96 



I'n tiincnlina pa> riila 07 



Pectunculus 166 



Pectunculus 94 165 



Pectunculus Siouxensis 92 



Pectunculus subimbricatus 95 



Pelagus 445 



Peloriderma 10 



Pcloris 10 



Perissoptera 32 1 



Perna 28,64,67,69 



Pernopecten 25 



Peronsea 194 



Peronwa 192,197 



Pcrona-oderma 192 



Peromeoderma 193 



Phacoides 130 



Pharella 250 - 



Pharella ? Dakotensis 251 



Pharella t equalis 251 



Pharella Jure nica 250 



Pharetra 7 



Pholadid.e 254 



Pholadomya 37,220,227 



Pholadomya 213,211 



Pholadomya Americana 221 



Pholadomya Candida 213 



Pholadomya cardissoides 215 



Pholadomya caudaia 235 



Pholadomya i Cymi lla) undata 236 



Pholadomya decussata 219 



Pholadomya exaltata 215 



Pholadomya fibrosa 36 



Pholadomya ((louiomiju) borealis 222 



Pholadomya Hodgii 215 



Pholadomya uodiilifcra 215 



Pholadomya papyracea 217 



Pholadomya pectinata ■ 214 



Pholadomya pelagica 21-1 



Pholadomya (Procardia ) Hodgii 219 



Pholadomya semicostata 214 



Pholadomya subelongaia 21s 1 



Pholadomya subventricosa 217 



Pholadomya tenera 217 



Pholadomya lenuicostata 214 



Pholadomya undata 229,236 



Pholadomya a 213 



Piiolai >om vid.e 213 



PJiolas cuneata 259 



