Plectoceras, 520 
Plectoderma, 55 
Plectodon, 393 
Plectomya, 389 
Plectorthis, 319 
Plesianthus, 237 
Plesiastraea, 87 
Plesiocyprina, 395 
Plesiodiceras, 400 
Plesiolampas, 242 
Plesioteuthis, 603 
Plesiothyris, 332 
Plesiotissotia, 590 
Plethomytilus, 368 
Plethopora, 264 
Plethorhyncha, 324 
Pleuracanthites, 568 
Pleurocera, 467 
Plewroceras, 577 
Plenrocora, 86 
Pleurocystites, 186 
Pleurodiadema, 230 
Pleurodictyum, 100 
Pleurodonta, 362 
Pleurodonte, 495 
Pleurolytoceras, 572 
Pleuromeris, 399 
Pleuromya, 387 
Pleuronautilus, 525 
Plewronotus, 446 
Pleuropachydiscus, 571 
Pleurophorus, 394 
Pleurorhynchus, 369 
Pleurostoma, 58 
Pleurotoma, 482 
Pleurotomaria, 443 
Plicatocrinus, 171 
Plicatula, 382 
Plicigera, 339 
Plicomya, 389 
Plinthosella, 49 
Pliorhytis, 418 
Plococeras, 556 
Plocophyllia, 90 
Plocoscyphia, 61 
Plumaster, 208 
Plumutites, 649 
Pocillopora, 84 
Poculina, 489 
Podocidaris, 232 
Podocrates, 663 
Poecilasma, 651 
Poecilomorphus, 576 
Poliochera, 679 
Polioptenus, 683 
Pollia, 475 
Pollicipes, 650 
Polorthus, 424 
Polyblastidium, 60 
Polycidaris, 225 
Polycheles, 661 
Polyenedium, 665 
Polycoelia, 63, 74 
Polycyclus, 561 
Polycyphus, 230 
Polydonta, 451 
Polygonosphaerites, 67 
Polygyra, 495 
Polyjerea, 49 
Polylepas, 650 
Polymorphina, 28 
Polymorphites, 574 
Polyodonta, 493 
Polypeltes, 147 
Polyphemopsis, 457 
Polyplectus, 577 
Polypora, 282 
Polyptychites, 583 
Polyschides, 432 
Polystomella, 34 
Polytoechia, 320 
Polytrema, 31 
Polytremacis, 107 
Polytremaria, 444 
Polytremata, 266 
Polytropis, 447 . 

Polyxenus, 682 
Pomatias, 460 
Pomatograptus, 117 
Pomatospirella, 340 
Pontocy pris, 646 
Popanoceras, 564 
Poraimbonites, 321 
Porcellia, 443 
Porella, 288 
Porina, 288 
Porites, 96 
Porocrinus, 184 
Poromya, 392 
Porosphaera, 111 
Porospongia, 59 
Portlockia, 459 
Portunites, 666 
Posidoniella, 372 
Posidonomya, 371 
Potamides, 469 
Potamomya, 422 
Poterioceras, 530 
Potoceras, 525 
Pourtalesia, 248 
Praearcturus, 668 
Praeatya, 662 
Praecardium, 362 
Praelima, 362 
Praelucina, 362 
Praesphaeroceras, 579 
Prasopora, 273 
Preconia, 395 
Prenaster, 246 
Prestwichia, 671 
Priamus, 480 
Primitia, 644 
Primnoa, 106 
Prionastraea, 87 
Prionites, 556 
Prionocyclus, 589 
Prionolobus, 556 
Prionotropis, 589 
Priscochiton, 434 
Prismopera, 280 
Pristiograptus, 117 
Proarcestes, 565 
Proavites, 556 
Probeloceras, 550 
Probolaeum, 434 
Proboscidella, 318 
Procardia, 389 
Procerites, 581 
Procladiscites, 566 
Prodryas, 689 
Productella, 317 
Productus, 317 
Proetus, 631 
Progonoblattina, 683 
Prographularia, 106 
Projovellania, 529 
Prolecanites, 562 
Prolibythea, 689 
Prolobella, 385 
Prolobites, 549 
Prolucina, 408 
Promachoerinus, 175 
Promacrus, 361 
Promathilda, 457 
Promedlicottia, 563 
Pronannites, 552 
Pronites, 320 
Pronoé, 415 
Pronoélla, 415 
Pronorites, 563 
Propeamusium, 351 
Prophysaon, 498 
Propinacoceras, 563 
Proplanulites, 581 
Propteticus, 684 
Proptychites, 556 
Propygope, 329 
Proricaris, 658 
Prorokia, 395 
Proscorpius, 679 
Prosocoelus, 395 
Prosodoena, 413 
INDEX 
| Prososthenia, 464 

Prosphingites, 553 
Protalochiton, 434 
Protaraea, 96 
Protaster, 203 
Protasteracanthion, 210 
Protengonoceras, 585 
Proteocystites, 183 
Protetraclis, 47 
Protetragonites, 569 
Prothyris, 361 
Proto, 465 
Protobactrites, 518 
Protobalanus, 652 
Protocardia, 412 
Protocaris, 641 
Protocimex, 686 
Protocrinites, 183 
Protocrisina, 262 
Protocycloceras, 518 
Protodiceras, 377 
Protolmulus, 671 
Protolycosa, 680 
Protoma, 465 
Protomya, 362 
Protonerita, 453 
Protonia, 317 
Protopharetra, 92 
Protophasma, 683 
Protophiceras, 556 
Protophragmoceras, 532 
Protorhyncha, 323 
Protorthis, 312 
Protoschizodus, 395 
Protospongia, 55 
Protosycon, 65 
Protozyga, 333 
Protrachyceras, 560 
Proutella, 283 
Psammechinus, 233 
Psainmobia, 418 
Psammocarcinus, 666 
Psammohelia, $4 
Psammosolen, 419 
Psammospaera, 23 
Pselioceras, 525 
Psephis, 416 
Pseudalaria, 469 
Pseudamusium, 381 
Pseudastacus, 664 
Pseudedmondia, 407 
Pseuderiphyla, 397 
Pseudobelus, 597 
Pseudoceltites, 558 
Pseudocerithium, 469 
Pseudochaetetes, 103 
Pseudocidaris, 228 
Pseudocrangon, 661 
Pseudocrania, 311 
Pseudocrinites, 187 
Pseudodanubites, 557 
Pseudodiadema, 229 
Pseudodiceras, 400 
Pseudodinarites, 559 
Pseudofossarus, 453 
| Pseudogalathea, 659 
Pseudoglyphaea, 664 
| Pseudohaploceras, 570 
| Pseudoharpoceras, 559 
Pseudohydrophilus, 687 
Pseudoliva, 475 
Pseudomelania, 456 
Pseudomonotis, 371 
Pseudonautilus, 522 
Pseudonerinea, 468 
Pseudoniscus, 673 
Pseudopedina, 230 
Pseudophyllites, 569 
Pseudoplacuna, 384 
Pseudosageceras, 555 
Pseudosealites, 458 
Pseudotoma, 482 
Pseudotropites, 577 
Psiloceras, 574 
Psilocladiscites, 566 
Psilodon, 413 
703 
Psilomya, 392 
Psilothorax, 684 
Psilotissotia, 590 
Pteria, 370 
Pterinea, 367 
Pterineopecten, 380 
Pterocaris, 658 
Pterocera, 471 
| Pterocerella, 471 
Pterochiton, 434 
Pterocoma, 174 
Pterodonta, 471 
Pteronautilus, 525 
Pteronites, 370 
Pteronotus, 477 
Pteroperna, 371 
| Pterophloios, 316 
Pteropsis, 420 
| Pterotheca, 491 
Pterotocrinus, 140 
| Pterygometopus, 636 

Pterygotus, 677 
Ptilodictya, 279 
Ptilopora, 283 
Ptiloporella, 283 
Ptiloporina, 283 
Ptilotrypa, 279 
Ptycharcestes, 565 
Ptychites, 557 
Ptychocaris, 656 
Ptychoceras, 571 
tychoerinus, 145 
Ptychodesma, 372 
Ptychomphalus, 443 
Ptychomya, 397, 416 
Ptychonema, 275 
Ptychoparia, 628 
Ptychophylluin, 78 
Ptychospira, 337 
Ptychostoma, 456 
Ptychostylus, 467 
Ptygmatis, 468 
Ptyssoceras, 524 
Puella, 362 
Pugites, 329 
Pugiunculus, 491 
Pugnax, 324 
Pugnellus, 471 
Pugnus, 486 
Pullastra, 416 
Pulsellum, 432 
Pulvinulina, 30 
| Punetuin, 498 
Puncturella, 446 
Pupa, 496 
| Pupillaea, 445 
| Purpura, 477 
Purpurina, 458 
Purpuroidea, 458 
Pustularia, 457 
Pustulopora, 262 
Puzosia, 569 
Pyenaster, 208 
Pyenodonta, 373 
Pycnomphalus, 451 
Pycnophyllum, 76 
_ Pyconosaceus, 164 
Pygaster, 234 
Pygaulus, 239 
| Pygocardia, 395 
Pygocephalus, 659 
Pygolainpis, 684 
Pygope, 329 
Pygurus, 241 
Pyrainidella, 457 
Pyramidula, 498 
Pyrazus, 470 
Pyrenella, 470 
Pyrgia, 101 
Pyrgidium, 464 
Pyrgoma, 652 
Pyrgula, 464 
'| Pyrgulifera, 467 
| Pyrina, 239 
Pyritonema, 55 
Pyrocystites, 182 
