Arcacea 28
arcaeformis, Anodonta 120
arcaeformis, Anodonta (Anemia) 120
archibenthalis, Acila (Acila) divaricata 15
Arcidae 28, 42, 43
Arcinae 28
Arcinella 138
arcinella, Chama 138
Arcoida 28
Arconaia 114
Arconaia lanceorata 115
Arcopagia 197
Arcopaginula 200
Arcopella 197
Arcopella isseli 197; 202, pl. 40, f. 1
Arcopsis 39
Arcopsis interplicata 40, pl. 7, f. 3-4, 41
Arcopsis sculptilis 41
Arcopsis symmetrica 40, pl. 7, f. 11, 13, 41
Arcopsis symmetrica forma oyamai 40, pl. 7, f. 12, 14, 41
Arctica 232
arctica, Hiatella 284
arctica, Mya 284
arctica, Nucula 25
arctica, Nucula 25, 26
Arctica vulgaris 232
arctica, Yoldia 25
Arcticacea 232
Arcticidae 232
Arctopratulum 170
Arctopratulum ezoense 170
(Arctopratulum) griphus, Nemocardium 170
Arctopratuluma yokoyamai 170
arcuata, Lutraria (Psammophila) 183
arcuata, Modiolaria 56
arenaria, Mya 278
arenaria oonogai, Mya (Arenomya) 276, pl. 58, f. 3, 278
arenaria, Septaria 302
arenicola, Trachycardium (Vasticardium) 165, 167, pl. 31, f. 1
(Arenomya), Mya 278
(Arenomya) arenaria oonogai, Mya 276, pl. 58, f. 3, 278
(Arenomya) elegans, Mya 278
(Arenomya) japonica, Mya 276, pl. 58, f. 3, 278
(Arenomya) pseudarenaria, Mya 278
arenosa, Pandorella 306
arenosa, Thraciopsis 312
areolata, Limopsis 49
argentata, Amphichama 138
ariakensis, Borniopsis 142
ariakensis, Crassostrea 108
arientina, Ditrupa 343
Artemis 262
Artemis bilunulata 260
Artemis chinensis 273
Artemis japonica 260
Artemis orientalis 273
Artemis radiata 262
Arvella 56
Asaphidae 219
Asaphis 221
ascoldica, Cuspidaria 321
aselae, Corculum 169
asiaticum, Vepricardium 164
aspera, Oxyperas (Pseudoxyperas) 182
aspera, Serratovola 90
asperaeformis, Mactra (Spisula) 182
asperaeformis, Oxyperas (Rugosoxyperas) 182
Aspergillidae 313
Aspergillum australe 313
Aspergillum giganteum 313
Aspergillum novaezelandiae 313
asperrima, Tellinella 192
asperrimus, Pecten 81
asperula, Bentharca 34
asperula, Macrodon 34
asperulata, Chlamys (Mimachlamys) 82
Aspidopholas 291
Aspidopholas yoshimurai 286, pl. 61, f. 15-16, 292
assimilis, Pinna 66
Astarte 160
Astarte hakodatensis 160, 162, pl. 30, f. 4-5
Astarte multicostata 160
Astartedonta 159
Astartella 161
Astartella ioani 161
Astartidae 160
astartoides, Liocyma 268
Asthenothaerus 312
Asthenothaerus isaotakii 312
Asthenothaerus sematana 312
Asthenothaerus villosior 312
Atactodea 186
Atactodea striata 186, 189, pl. 36, f. 5-6
atlantica, Callocardia? 237
atrata, Corbicula fuscata 239
atrata, Hiatula 223
atrata, Vignadula 35, pl. 6, f. 14, 61
Atrina 66
Atrina (Atrina) 66
Atrina (Atrina) vexillum 66
Atrina (Servatrina) kinoshitai 67
Atrina (Servatrina) lamellata 67
Atrina (Servatrina) pectinata 66
Atrina (Servatrina) penna 66
Atrina (Servatrina) tenuis 66
Atrina (Servatrina) teramachii 67
atropurpurea, Pinna (Quantulopinna) 65
atsumiensis, Pecten 85
attenuata, Pinna 65
attenuatum, Laevicardium 172
attenuatus, Phaxas 229, 230, pl. 48, f. 11-12
Aulus 228
Aulus winterianus 229
arcaeformis, Anodonta 120
arcaeformis, Anodonta (Anemia) 120
archibenthalis, Acila (Acila) divaricata 15
Arcidae 28, 42, 43
Arcinae 28
Arcinella 138
arcinella, Chama 138
Arcoida 28
Arconaia 114
Arconaia lanceorata 115
Arcopagia 197
Arcopaginula 200
Arcopella 197
Arcopella isseli 197; 202, pl. 40, f. 1
Arcopsis 39
Arcopsis interplicata 40, pl. 7, f. 3-4, 41
Arcopsis sculptilis 41
Arcopsis symmetrica 40, pl. 7, f. 11, 13, 41
Arcopsis symmetrica forma oyamai 40, pl. 7, f. 12, 14, 41
Arctica 232
arctica, Hiatella 284
arctica, Mya 284
arctica, Nucula 25
arctica, Nucula 25, 26
Arctica vulgaris 232
arctica, Yoldia 25
Arcticacea 232
Arcticidae 232
Arctopratulum 170
Arctopratulum ezoense 170
(Arctopratulum) griphus, Nemocardium 170
Arctopratuluma yokoyamai 170
arcuata, Lutraria (Psammophila) 183
arcuata, Modiolaria 56
arenaria, Mya 278
arenaria oonogai, Mya (Arenomya) 276, pl. 58, f. 3, 278
arenaria, Septaria 302
arenicola, Trachycardium (Vasticardium) 165, 167, pl. 31, f. 1
(Arenomya), Mya 278
(Arenomya) arenaria oonogai, Mya 276, pl. 58, f. 3, 278
(Arenomya) elegans, Mya 278
(Arenomya) japonica, Mya 276, pl. 58, f. 3, 278
(Arenomya) pseudarenaria, Mya 278
arenosa, Pandorella 306
arenosa, Thraciopsis 312
areolata, Limopsis 49
argentata, Amphichama 138
ariakensis, Borniopsis 142
ariakensis, Crassostrea 108
arientina, Ditrupa 343
Artemis 262
Artemis bilunulata 260
Artemis chinensis 273
Artemis japonica 260
Artemis orientalis 273
Artemis radiata 262
Arvella 56
Asaphidae 219
Asaphis 221
ascoldica, Cuspidaria 321
aselae, Corculum 169
asiaticum, Vepricardium 164
aspera, Oxyperas (Pseudoxyperas) 182
aspera, Serratovola 90
asperaeformis, Mactra (Spisula) 182
asperaeformis, Oxyperas (Rugosoxyperas) 182
Aspergillidae 313
Aspergillum australe 313
Aspergillum giganteum 313
Aspergillum novaezelandiae 313
asperrima, Tellinella 192
asperrimus, Pecten 81
asperula, Bentharca 34
asperula, Macrodon 34
asperulata, Chlamys (Mimachlamys) 82
Aspidopholas 291
Aspidopholas yoshimurai 286, pl. 61, f. 15-16, 292
assimilis, Pinna 66
Astarte 160
Astarte hakodatensis 160, 162, pl. 30, f. 4-5
Astarte multicostata 160
Astartedonta 159
Astartella 161
Astartella ioani 161
Astartidae 160
astartoides, Liocyma 268
Asthenothaerus 312
Asthenothaerus isaotakii 312
Asthenothaerus sematana 312
Asthenothaerus villosior 312
Atactodea 186
Atactodea striata 186, 189, pl. 36, f. 5-6
atlantica, Callocardia? 237
atrata, Corbicula fuscata 239
atrata, Hiatula 223
atrata, Vignadula 35, pl. 6, f. 14, 61
Atrina 66
Atrina (Atrina) 66
Atrina (Atrina) vexillum 66
Atrina (Servatrina) kinoshitai 67
Atrina (Servatrina) lamellata 67
Atrina (Servatrina) pectinata 66
Atrina (Servatrina) penna 66
Atrina (Servatrina) tenuis 66
Atrina (Servatrina) teramachii 67
atropurpurea, Pinna (Quantulopinna) 65
atsumiensis, Pecten 85
attenuata, Pinna 65
attenuatum, Laevicardium 172
attenuatus, Phaxas 229, 230, pl. 48, f. 11-12
Aulus 228
Aulus winterianus 229