INDEX 



[Names of genera and subgenera regarded as synonyms are priuted in italics, all otliers in Roman. ] 



Abacocrinus, 194 

 Ähatus, 296 

 Ablacomya, 449 

 Abra, 495 

 Abracrinus, 194 

 Ahrotocrinns, 222 

 Acacocrinus, 194 

 Acambona, 414 

 Acanthactinella, 62 

 Acantherpestes, 793 

 Acanthina, 558 

 Acanthinites, 648 

 Acanthocaris, 751 

 Acanthoceras, 669 

 Acanthocites, 513 

 Acanthoclaclia, 342 

 Acanthoclema, 344 

 Acanthoclymenia, 628 

 Acanthocrinus, 188 

 Acanthocyathus, 95 

 Acanthocystites, 150 

 Acanthodictya, 61 

 Acantholithus, 112 

 Acanthonaiitilus, 606 

 Acanthopleura, 513 

 Acanthospongia, 62 

 Acanthotelson, 756 

 Acanthoteiithis, 683 

 Acanthothyris, 400 

 Acasta, 746 

 Acaste, 726 

 Acavvis, 576 

 Acentrotremites, 172 

 Acervularia, 86 

 Aceste, 297 

 Acestra, 62 

 Acharax, 438 

 Achradocrinns, 219 

 Achradocystites, 151 

 Achrochordociinus, 232 

 Acila, 440 

 Acdeistoceras, 611 

 Aclisina, 538 

 Acloeodictya, 61 

 Acmaea, 520 

 Acritis, 371 f 

 Acrochordiceras, 640 

 Acrocrinus, 201 

 Acroculia, 541 

 Acrogenia, 346 

 Acroidaris, 275 

 Aoropora, 107 

 Acrosalenia, 279 

 Acrothele, 376 

 Acrothyra, 376 

 Acrotreta, 376 

 Acrura, 256 

 Actaeonella, 566 

 Actaeoriina, 566 

 Acteocine, 568 

 Acteon, 565 

 Actinacis, 107 

 Actinocamax, 682 



Actinoceramus, 447 

 Actinoceras, 609 

 Actinoconchus, 418 

 Actinocrinus, 197 

 Actinodesina, 444 

 Actinodiclya, 61 

 Actinodonta, 455 

 Äctinomya, 468 

 Actinopora, 322 

 Actinopteria, 448 

 Actinosepia, 688 

 Actinostonia, 341 

 Actinostreon, 450 

 Actinostroma, 122 

 Actinotaxia, 326 

 Adacna, 490 

 Adelactaeon, 566 

 Adehtstrea, 101 

 Adeloblatta, 803 

 Adelopthalmus, 783 

 Adeonella, 339 

 Adolfia, 410 

 Adranaria, 440 

 Aechmina, 738 

 Aeger, 761 

 Aegiope 405 

 Aeglina, 721 

 Aegoceras, 656 

 Aeolopneustes, 282 

 Aeropsis, 297 

 Aeschnidium, 810 

 Aesiocrinus, 225 

 Aesiocystis, 159 

 Aetea, 348 

 Aethocystis, 157 

 Aetostreon, 450 

 Aganides, 631 

 Agaricia, 103 

 Agaricocrinus, 196 

 Agassiceras, 657 

 Agassizia, 296 

 Agassizocriniis, 224 

 Agathelia, 95 

 Agathemera, 800 

 Agabhiceras, 641 

 Agelacrinus, 159, 156 

 Agina, 499 

 Aglaspis, 776 

 Aglithodictya, 61 

 Agnesia, 524 

 Agnostus, 710 

 Agoniabites, 630 

 Agrawlos, 717 

 Agria, 482 

 Agriocrinus, 199 

 Agrion, 811 

 Aguthasia, 404 

 Aipoceras, 606 

 Akera, 567 

 Alarla, 550 

 Albertella, 717 

 Alecto, 319 

 Alectrion, 556 



Alectryonia, 450 

 Alexia, 574 

 Alipes, 551 

 AUagecrinus, 209 

 Allionia, 237 

 Allocrinus, 191 

 Allocystites, 155 

 AUodesma, 470 

 AUomorphina, 29 

 AUonema, 318 

 AUonychia, 445 

 Allopagus, 469, 489 

 AUoprosallocrinus, 195 

 Allorhynchus, 398 

 AUorisma, 465 

 Alocolytoceras, 652 

 Aluta, 735 

 Alveolina, 39 

 Alveolites, 114 

 Alveopora, 107 

 Amaltheus, 659 

 Amauropsis, 543 

 Ainbites, 633 

 Amblypneustes, 282 

 Amblypygus, 289 

 Amblysiphonella, 71 

 Ambocoelia, 412 

 Ambonycliia, 445 

 Amiella, 786 

 Amicula, 513 

 Amiskwia, 135 

 Amita, 444 

 Ammobaculites, 26 

 Ammodiscus, 25 

 Ammolagena, 25 

 Amnicola, 545 

 Amnigenia, 451 

 Aviorphocystis, 152 

 Amperleya, 530 

 Ampheristocrinus, 218 

 Amphiastraea, 98 

 Amphibola, 573 

 Amphiceras, 657 

 Amphichaena, 495 

 Amphiclina, 419 

 Amphiciinodonta, 419 

 Amphicoelia, 445 

 Aniphicrinus, 205 

 Amphidesma, 495 

 Amphidonta, 450 

 Amphidromus, 576 

 Aiiiphigenia, 400 

 Amphilichas, 721 

 Amphion, 725 

 Amphipeltis, 758 

 Amphipora, 124 

 Amphispongia, 62 

 Amphistegina, 34 

 Amphistrophia, 385 

 Amphithelion, 59 

 Amphitomella, 418 

 Amphiura, 256 

 Amphora, 197 



Amphoracrinus, 197 

 Amplexopora, 336 

 Amplexus, 83 

 Ampulla, 561 

 Ampullina, 543 

 Ampyx, 712 

 Amusium, 458 

 Amygdalocystites, 151 

 Amynilispes, 793 

 Anabacia, 103 

 Anabaia, 417 

 Anadara, 443 

 Anagyrnnites, 645 

 Ananchytes, 292 

 Anapella, 498 

 Anaphragma, 339 

 Anarcestes, 629 

 Anasirenites, 648 

 Anaspides, 755 

 Anastomopora, 342 

 Anasbrophia, 394 

 Anathyris, 417 

 Anatimya, 466 

 Anatina, 466 

 Anabinella, 498 

 Anatomites, 639 

 Anazyga, 408 

 Anchura, 551 

 Ancilla, 562 

 Ancillaria, 562 

 Ancistroceras, 601 

 Ancistrocrania, 379 

 Ancryopyge, 723 

 Anculosa, 548 

 Ancyloceras, 670 

 Ancylus, 575 

 Androgynoceras, 656 

 Angaria, 529 

 Angelinoceras, 601 

 Anisactinella, 418 

 Anisocardia, 471 

 Anisocrinus, 203 

 Anisophyllum, 84 

 Anisothyris, 499 

 Anisotrypa, 335 

 Anodonta, 455 

 Anodontites, 455 

 Anodontopsiif, 470 

 Anolcites, 648 

 Anolotichia, 328 

 Anomactinella, 418 

 Anomalanthus, 286 

 Anomalina, 33 

 Anomalocaris, 733 

 Anomaloceras, 605 

 Anomalocrinus, 213 

 Anomalocystites, 150 

 Anomalodonta, 445 

 AnomahmUs, 72 

 Anonialospongia, 72 

 Anomia, 461 

 Anonioclonella, 56 

 Anomplialus, 532 



