Anodon, 229, 230.
Anæma, 458.

Anogens, 473.

Anomia, 221.

Anomodontia, 373.
Anomopteris, 497.
Anomura, 179, 180.
Anoplotherida, 430, 431.
Anoplotherium, 430.
Anoura, 346, 347, 349.
Ant-eaters, 413.
Antedon, 123.

Antholithes, 474, 484, 494.
Anthracopalamon, 178.
Anthracosia, 234, 236.
Anthracosaurus, 352.
Anthracotherium, 430.
Antilocapra, 437.
Antilocaprida, 438, 439.
Antilope, 437, 439.
Antilopida, 437, 438.
Antipathes, 88.
Antwerp Crag, 556.

Apateon, 352.

Aphragmites, 286.

Apiocrinidae, 127, 128.

Apiocrinus, 118, 128.

Apiocystites, 130, 133.

Aplysia, 261.

Aplysiada, 261.

Aporosa, 96; distribution of, in time, 97.

Aporrhais, 252.

Apteryx, 393, 394.

Aptornis, 390.

Aptychus, 154.

Apus, 159, 165, 166.

Aralo-Caspian beds, 556.

Arachnida, characters of, 181; orders of,

182; distribution of, in time, 182.

Araneida, 182, 183.

Araucaria, 497, 500.

Araucarioxylon, 475, 493.

Arca, 226, 227.

Arcade, 216, 218, 226.

Archæocidaris, 108, 110.
Archæocyathus, 68.
Archaeoniscus, 177.

Archaeopteryx, 383, 386, 390, 396.

Archagaricon, 475.

Archegosauria, 352.

Archegosaurus, 352.

Archimedipora, 196.

Archimulacris, 186.

Archiulidæ, 184.

Archiulus, 184.

Arctocyon, 451, 460.

Arctomys, 460.
Arcturus, 177.

Arenicolites, 142.

Arethusina, 171.

Argonauta, 274, 275, 294.
Argonautida, 275, 294.

Armadillos, 413, 416.

Arms of Star-fishes, 111, 113; of Ophiu-
roids, 116; of Crinoids, 119; of Cys-
tideans, 130; of Blastoidea, 134; of
Brachiopoda, 201.

Aroides, 499.

Artemia, 159.

Arthraster, 115.

Arthrophycus, 479.

Arthropoda, 143, 144.

Bactrites, 276, 287, 288.

Baculites, 276, 287, 293.
Bagshot series, 549.
Bairdia, 156, 157.
Bakewellia, 530.
Bala beds, 516.
Balana, 419.
Balanide, 419, 420.

Balanodon, 422.
Balanide, 150, 152.
Balanophyllia, 96.
Balanus, 151, 152.
Balistidæ, 318.
Banksia, 499, 502.
Baphetes, 352, 353.
Baptosaurus, 365.
Barnacles, 152.

Barramunda, 314, 343, 344, 345.

Barrandia, 169.

Batides, 337, 341.

Batrachia, 349.

Belemnitella, 290.

Belemnites, 297; sections of. 298.

Belemnitida, 275, 277, 294, 296.

Bourgueticrinus, 128.

Bovey Tracy lignites, 502.

Bovida, 437, 439, 440.

Brachiopoda, characters of, 198; shell of,

199; families of, 203; distribution of,
in time, 202, 203.

Brachymetopus, 167.

Brachyura, 180.

Bradypodido, 413, 414.
Bradypus, 398.

Bramatherium, 438, 439.

Branchifera (Gasteropoda), 241, 244, 246.
Bronteidæ, 171.

Bronteus, 163, 167, 171.

Brontozoum, 533.
Bruta, 413.

Bryozoa (see Polyzoa).

Buccinidae, 248.

Buccinum, 248.

Cardiola, 224.

Cardiomorpha, 527.

Cardita, 234, 235.

Cardium, 233.

Carinaria, 245, 262, 263.

Carnivora, characters of, 447, 448; Pinni-
grade, 449; Plantigrade, 450; Digiti-
grade, 452; distribution of, in time, 449.
Carpenteria, 64.

Carriage spring apparatus of Brachio-
pods, 201.
Caryocaris, 159.
Caryocrinus, 130.

Caryocystites, 133.

Caryophyllia, 96.
Cassidulida, 109.
Cassis, 242, 248, 249.

Castor, 458, 459.
Castoridæ, 458.
Castoroides, 459.

Casuarius, 394.

Catarhine Monkeys, 465, 466.

Catodontidae, 419.

Catopygus, 544.

Caturus, 545.

Caulopteris, 474, 482, 485.

Cave Bear, 451.

Cave Hyæna, 453.

Cave Lion, 455.

Cave Pika, 560.

Cavicornia, 433, 437.

Cavidæ, 458.

Cebus, 465.

Cellepora, 198.

Cellules of Graptolites, 79, 81.

Centerodon, 364.

Centipedes, 183.

Centrodus, 338, 339.

Cephalaspide, 322, 331.

Cephalaspis, 331.

Cephalopoda, characters of, 272; distri-
bution of, in time, 276; Tetrabranchiate,
277; Dibranchiate, 293.