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Rh rotella, Microgaza, in, fig. 32d, e rotundata, Neritina, 130 rubella, Ostrea, 373 rubella, Rubellatoma, 272 Rubellatoma, 272 diomedea, 272 rubella, 272 ruber, Ischnochiton, 313, 322 rubrilinearum, Eulithidium, 127 rubropicta, Semele, 435, pi. 29W rubrum, Gastropteron, 283, fig. 6oe ruderata, Protothaca, 410 nidis, Littorina, 133 rudis, Pinna, 360 rudis, Pododesmus, 372, pi. 38b Ruditapes, 410 rufescens, Haliotis, 92, pi. 2a (352) rufibranchialis, Coryphella, 310, pi. 15a rufoides, Ostrea, 374 rufus, Murex, 204 rugatina, Antigona, 405, pis. 38m, 32n rugosa, Ceratozona, 317, 326, fig. 67a rugosa, Hiatella, 453 rugosum, Trigonostoma, 253 rugosus, Octopus, 487 Rupellaria, 420 calif orjiica, 421 calif orniensis, 420 carditoides, 421 denticulata, 420 tellimyalis, 420, pi. 311 typica, 420, pi. 3oe rupicola, Semele, 435, pi. 29t rupicolum, Epitonium, 165, pi. 226 rustica, Thais, 213, 214, pi. i^i rusticoides, Columbella, 220 Saccella, 338 sagitta, Penitella, 463 sagittata, Amygdalum, 353 sagra, Philine, 283 sagraiana, Pvissoina, 138 Salasiella, 290 salleana, Terebra, 266, 267 salmonea, Tellina, 426, pi. 3iy sanctaemarthae, Solecurtus, 445, pi. 3oh sandersoni, Atys, 278, fig. 59d sandiegensis, Dialula, 301, pi. i6d sanguinea, Aldisa, 301 sanguinea. Trivia, 179 Sanguinolaria, 439 cruenta, 439, pi. 4od nuttalli, 439, pi. 29X sanguinolenta, 439 sanguinolenta, Sanguinolaria, 439 sanibelensis, Crassispira, 270 sapotilla, Yoldia, 340, pi. 276 satura, Chrysodomus, 229 sati/ra, Neptunea, 229 saxatiUs, Littorina, 133, pi. i9d Saxicava, 452 saxicola, Entodesma, 469, pi. 29m Saxidomus, 417 giganteus, 417 nuttalli, 417, pi. 31-I Scientific Names sayana, Oliva, 245, pi. 1 2a sayi, Tellina, 424, fig. 86f scabra, Acmaea, 102, 103, pi. 18-I scabra, Lima, 370, pi. 351, o scabra, Littorina, 133 scabra, Nuttallina, 314 Scala, 163 scalare, Epitonium, 6 Scalaria borealis, 162 scalariformis, Boreotrophon, 207 scalariformis, Cerithidea, 152, pi. 19X scalaris, Tegula, 118 Scalina, 163 Scaphella, 250, (273) butleri, 250 dohrni, 251, pi. 13J dubia, 251 florida, 251 georgiana, 251 johnstoneae, 250 junonia, 250, 251, pi. i3f schmitti, 251, pi. i3e scaphoidea, Limacina, 293 scaphoidea, Spiratella, 293 Scaphopoda, 327 Schizothaerus, 450 capax, 450 nuttalli, 450, pi. 31Z Schizotrochus, 91 schmitti, Scaphella, 251, pi. 136 scbra?/n}ii, Anodontia, 390 schrammi, Tonicia, 326, fig. 676 Scissula, 426 Scissurella, 91 crispata, 91 proxima, 91, fig. 29 Scissurellidae, 91 scitulus, Boreotrophon, 207, fig. 46d scolyma, Turbinella, 245 scolyma, Xancus, 245 Sconsia striata, 192, pi. 9h scopulosum, Sinum, 190 Scrobiculina, 427 sculpta, Nuculana, 337 scutulata, Littorina, 134, pi. 20c scutum, Acmaea, 103, 104 Scyllaea pelagica, 308 Scyllaeidae, 308 Searlesia dira, 232, fig. 5od secta, Macoma, 432, fig. 88c secticostata, Anadara, 345 Sella, 158 adamsi, 158, pi. 22t montereyensis, 158 terebralis, 158 Semele, 434 bellastriata, 435, pi. 30) cancellata, 435 decisa, 435, pi. 29Z proficua, 434, pi. 40g purpurascens, 435, pi. 40b radiata, 434, pi. 401 rubropicta, 435, pi. 29W rupicola, 435, pi. 29t semiaspera, Diplodonta, 383 537 Semicassis, 192 abbreviata, 193 inflatw/i, 193 semidecussata. Tapes, 411 seminuda, Odostomia, 288, fig. 62] Semirossia, 480 semistriata, Ringicula, 276, pi. 26V semistriolatum, Dentalium, 331 semisulcata, Papyridea, 398 semisulcata, Sigatica, 187 sennottorum, Conus, 261, pi. i4h sentis, Chlamys, 363, 364, pi. 34a Sepia, 480 sepioidea, Sepioteuthis, 482 Sepiolidae, 479 Sepioteuthis, 482 Septibranchia, 474, (332) Septifer, 354 bifurcatus, 353, 354 obsoletiis, 354 serrata, Atrina, 360, pi. 27V serratum, Laevicardium, 400 serratus, Hipponix, 166 Serripes groenlandicus, 401, pi. 32d sicarius, Solen, 444, pi. 29V Sigatica, 189 carolinensis, 187, pi. 22-I holograpta, 187 semisulcata, 187 signatum, Cyphoma, 184, pi. 41 Siliqua, 442 alta, 443 costata, 442, pi. 3of lucida, 442 media, 443 nuttalli, 443 patula, 442, pi. 29y squama, 442 siliqua, Cyrtodaria, 453 Siliquaria, 145 siviilis, Neosimnia, 183 similis, Spisula, 446 similis, Tellina, 426, pi. 4oni; fig. 86e simplex, Acmaea, 106 simplex, Anomia, 372, pi. 35k simpsoni, Pitar, 414 Sinum, 190 calif ornictnn, 1 90 debile, 190 maculatum, 190 perspectivum, 190, pi. 22s scopulosum, 190 sinuosa, Chama, 392, fig. 79a Siphonaria, 310 alternata, 310, fig. 65a lineolata, 310 naiifragum, 310 pectinata, 310, fig. 65b Siphonariidae, 310 Siphonodentaliidae, 327 sitkana, Littorina, 134, pi. 20b sloani, Strombus, 174 Smaragdia, 130 viridemaris, 1 30 viridis, 130, pi. 4h