INDEX OF GENERA. 



859 



Aphana, f, II 457 

 Apheleceras, n, II 87 

 Aphetoceras, n, II 65 

 Aphididae, II 457 

 Aphodius, m, II 447 

 Aphrophora, f, II 457 

 Apidse, II 449 

 Aporrhaidse, I 750 

 Aporrhais, f, I 753 

 Aptera, II 443 

 Arabellites, m, II 240 

 Arachnida, II 414 

 Araneae, II 416 

 Area, f, I 417 

 Arcestes, m, II 162 

 Arcestida, II 162 

 Archaeocidaris, f, II 578 

 Archseocrinus, m, II 550 

 Archaeoplax, f, II 397 

 Archaeopus, n, II 396 

 Archaeozonites, m, I 822 

 Archanodon, m, I 477 

 Archimedes, m, I 147 

 Archimylacridae, II 434 

 Arehinacella, f, I 605 

 Archinsecta, II 442 

 Archiorhynchus, n, II 441, 



445 

 Archipolypoda, II 417, 418 

 Architarbus, m, II 415 

 Archiulus, m, II 419 

 Arcopagia, f, I 562 

 Arctica, f, I 537 

 Arctinurus, m, II 307 

 Arenicolites, m, II 246 

 Arietida, II 183 

 Aristerella, f, I 518 

 Aristozoe, f, II 378 

 Arnioceras, n, II 183 

 Arthracantha, f, II 520 

 Arthroclema, n, I 152 

 Arthrolycosa, f, II 415 

 Arthrophycus, m, II 247 

 Arthropoda, II 250 

 Arthropora, I 156 

 Arthrostylus, m, I 152 

 Articulata, II s07 

 Artinska, f, II 431 

 Asaphellus, m, II 290 

 Asaphiscus, m, II 289 

 Asaphus, m. II 290, 292 

 Ascodictyon, n, I 117 

 Asemoblatta, f, II 434 

 Aspenites, m, II 151 

 Aspidoceras, n, II 188 

 Aspidocrinus, m, II 569 

 Aspidopora, f, I 130 

 Astacus, m, II 392 

 Astarte, f, I 539 

 Astartella, f, 536 

 Asterias, m, II 572 

 Asteroidea, II 571 



Asterozoa, II 570 

 Astrseospongia, f, I 17 

 Astrohelia, f, I 104 

 Astylospongia, f, I 14 

 Astyris, f, I 761 

 Asymptoceras, n, II 102 

 Atactoporella, f, I 127 

 Athyris, f, I 352 

 Atokus, m, II 449 

 Atops, £, II 261 

 Atractites, m, II 229 

 Atremata, I 188 

 Atrypa, £, I 309 

 Aturia, f, II 112 

 Aucella, f, I 456 

 Aulacophyllum, n, I 59 

 Aulacostephanus, m, II 191 

 Aulopora, f, I 78 

 Auriculidae, I 814 

 Aurinea, f, I 794 

 Avicula, f, I 445, 447 

 Aviculopecten, m, I 486 

 Aviculopinna, f, I 435 

 Axinea, f, I 418 

 Axonolipa, I 27 

 Axonophora, I 31 



Bactrites, m, II 134 

 Bactritida, II 134 

 Bactritidae, II 134 

 Bactropora, f, I 155 

 Baculites, m, II 179 

 Bairdia, f, II 364 

 Bakewellia, f, I 438 

 Balanophyllia, f, I 104 

 Balanus, m, II 372 

 Barbarofusus, m, I 775 

 Barbarothea, f, II 454 

 Barbatia, f, I 417 

 Barnacles, II 370 

 Barrandella, f, I 276 

 Barrandeoceras, n, II 65 

 Barroisiceras, n, II 223 

 Barychilina, f, II 361 

 Barycrinus, m, II 507 

 Bathynotus, m, II 262 

 Bathyomphalus, m, I 818 

 Bathyuriscus, m, II 287 

 Bathyurus, m, II 288 

 Batocrinus, m, II 540 

 Batostoma, n, I 136 

 Batostomella, f, I 133 

 Beatricea, f, I 46 

 Bees, II 449 

 Beetles, II 445 

 Belemnitella, f, II 231 

 Belemnites, m, II 229 

 Belemnitida, II 229 

 Belemnoidea, II 229 

 Belemnopsis, f, II 230 

 Belinurus, m, II 400 

 Bellerophon, m, I 618 



Bellerophontidae, I 609 

 Belosepia, f, II 233 

 Bembexia, f, I 647 

 Bembidium, n, II 448 

 Berenicea, f, I 119 

 Bergeronia, f, II 266 

 Berosus, m, II 447 

 Beyrichia, f, II 354 

 Beyrichiella, f, II 359 

 Beyrichites, m, II 154 

 Beyrichona, f, II 338 

 Biflustra, n, I 168 

 Bifurculapes, m, II 441 

 Billingsella, f, I 210 

 Bilobites, m, I 259 

 Bittium, n, I 747 

 Blastoidea, II 474 

 Blastoidocrinus, m, II 477 

 Blattinopsis, f, II 432 

 Blattoidea, II 433, 444 

 Blothrophyllum, n, I 60 

 Boletina, f, II 455 

 Bollia, f, II 351 

 Bostrychoceras, n, II 205 

 Bothromicromus, m, II 451 

 Botryllopora, f, I 127 

 Botryocrinus, m, II 506 

 Brachiopoda, I 170 

 Brachiospongia, f, I 17 

 Brachiura, II 393 

 Brachymetopus, m, II 303 

 Brachypeza, £, II 455 

 Brachytarsus, m, II 446 

 Bradyblatta, f, II 435 

 Branchiopoda, II 330 

 Brancoceras, n, II 138 

 Breviarca, f, I 407 

 Brittle stars, II 570 

 Bronteus, m, II 306 

 Bruchidae, II 447 

 Bruchus, m, II 447 

 Bryozoa, I 107 

 Bucania, f, I 613 

 Bucaniella, f, I 612 

 Bucanopsis, f, I 622 

 Buccinidae, I 761 

 Buccinofusus, m, I 762 

 Buccinum, n, I 761 

 Buchiola, f, I 392 

 Bugs, II 455 

 Bulbifusus, m, I 783 

 Bulimorpha, f, I 699 

 Bulla, f, I 809 

 Bullidae, I 809 

 Bumastus, m, II 297 

 Buprestis, f, II 447 

 Buprestites, m, II 447 

 Buskopora, f, I 126 

 Butterflies, II 452 

 Byssonychia, f, I 431 

 Bythocypris, f, II 365 

 Bythopora, f, I 133 



