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520 bitruncata, Panope, 454 Bittium, 155 alternatum, 155 attenuatum, 156 eschrichti, 155, 156 interfossum, 156 montereyense, 156 quadrifilatum, 156 varium, 155, pi. ipr virginicum, 155 bituberciilatus, Strombus, 175 Bivalvia, 332 Bivetiella, 253 blakeana, Gymnobela, 273, fig. 57h Blepharopoda occidentalis, 396 bonibix, Litiopa, 157 bombyx, Litiopa, 157 bonita, Haliotis, 92 borealis, Acirsa, 162 borealis, Aequipecten, 368 borealis, Astarte, 375, pi. 28q borealis, Marginalia, 257 borealis, Onchidella, 275 borealis, Prunum, 257 borealis, Scalaria, 162 borealis, Solemya, 333 borealis, Trichotropis, 167, pi. 24d borealis, Venericardia, 379, 380, pi. 28t Boreonielon, 251 Boreotrophon, 206 clathratus, 206 dalli, 208, fig. 46a multicostatus, 207, 208, fig. 46c orpheus, 208, fig. 466 pacificus, 208, fig. 46f peregrimis, 208 scalariformis, 207 scitulus, 207, fig. 46d s?nithi, 207 stuarti, 207, pi. 24J triangulatus, 208, fig. 46b Bornia longipes, 396, fig. 80, not in text Botula, 356 calif orniensis, 356, pi. 29h falcata, 356, pi. 29k fusca, 356 Brachidontes, 352 adamsianus, 353 citrinus, 352> 353. pl- 35^ exustus, 352, pi. 35) hamauis, 353 multiformis, 353 recurvus, 351, 353, pi. 35n stearnsi, 353 brandaris, Alurex, 12, pi. loj branhamae, Fasciolaria, 242 brasiliana, Anadara, 346, pi. 27y brasiliana, Anomalocardia, 409 brasiliana, Crassostrea, 375 brasiliana, Tonna, 199 brasiliensis, Iphigenia, 439, pi. 32U brevicaudatus, Latirus, 241, pi. iif brevifrons, Murex, 203, pi. loa brevipimm, Lolliguncula, 482 brevis, Lolliguncula, 482, fig. 99g brevispina, Astraea, 123, pi. 3-I briareus. Octopus, 487, fig. looc bronniana, Limea, 371 brota, Macoma, 433, fig. 88a browniana, Rissoina, 137 brunnea, Acanthodoris, 306 brunnea, Tegula, 119, 120 brunnea, Tindaria, 341 brunneus, Polinices, 186, pi. 5) bryerea, Rissoina, 137 Buccinidae, 223 (note), 225 Buccinum, 225 baeri, 226, pi. 24V glaciale, 226, pi. 24t plectrum, 225, fig. 50a tenue, 225, 226, pi. 24U undatum, 225 Bufonaria, 198 bulimoides, Spiratella, 293, fig. 64d Bulla, 277 amygdala, 277 gouldiana, 278 occidentalis, 277, pi. 26p punctulata, 278 striata, 277, pi. i3p Biillaria, see Bulla, 277 Bullidae, 277 Bursa, 197 affifiis, 198 caelata, 198 calif ornica, 199, pi. 2or corrugata, 198, pi. 9k crassa, 198 cubaniana, 198 granulans, 198, pi. 25-0 loiiisa, 198 po7iderosa, 198 spadicea, 198, pi. 25P tenuisculpta, 198 thomae, 197 Bursatella leachi plei, 286 burryi, Murex, 203 burryi. Octopus, 487, fig. loob bushi, Rhizorus, 281 bushiana. Pandora, fig. 96a, not m text Busycon, 235 canaliculatum, 236, pi. 23n carica, 235, 236, pi. 23i coarctatum, 237, pi. la contrarium, 76, 236, pi. 23-0 kieneri, 236 perversum, 236, pi. 23k plagosum, 237 pynmi, 236 spiratum, 236, pi. 9g Busycotypus, 236 butleri, Scaphella, 250 buttoni, Tellina, 425 buttoni, Turbonilla, 290, fig. 63d cabriti, Murex, 201, pi. loh Cadlina, 301 flavomaculata, 302 laevis, 302 marginata, 301 obvelata, 302 plamdata, 302 repanda, 302 Cadulus, 150, 327 carolinensis, 327, fig. 69a mayori, 328 quadridentatus, 328 caeca, Lepeta, 107, pi. 17) Caecidae, 145 Caecum, 146 bakeri, 150 barkleyeiise, 148 calif ornicum, 147, fig. 37g carolinianuni, 149, fig. 37c carpenteri, 148, fig. 371 catalinense, 148 cayosense, 147 cooperi, 148, fig. 37g crebricinctum, 147, fig. 37m dalli, 147, fig. 37h diegense, 147 floridanum, 146, fig. 37a grippi, 147 hei}7pbilli, 150 heptagonum, 148, fig. 37k lermondi, 150 licalum, 147 nebulosum, 149, fig. 37f nitidum, 150, fig. 37e occidentale, 149, fig. 37 j orcutti, 149, fig. 37-I oregonense, 148 pedroejjse, 148 pulchellum, 147, fig. 37d rosafunn, 148 caelata, Astraea, 124, pi. 3h caelata, Bursa, 198 caelatus, Colus, 229 caelatus, Pyrunculus, 280, pi. 26W calamus, Dentalium, 331 calcarea, Macoma, 430, fig. 88f californiana. Trivia, 179, pi. 20V californianus, Mytilus, 354, pi. 29P calif ornianus, Nassarius, 239 californianus, Tagelus, 440, pi. 29U calif ornica, Allopora, 182 californica. Bursa, 199, pi. 2or californica, Codakia, 390, pi. 31c californica, Cryptomya, 456 californica, Cumingia, 436, pi. 31V californica, Donax, 438, pi. 3ip californica, Echinochama, 394, pi. 37e californica, Hyalina, 259 californica, Lyonsia, 468 californica, Mactra, 445, fig. 9od californica, Neptunea, 230 californica, Nuttallina, 314 californica, Parapholas, 464 californica, Pedicularia, 182, pi. 7b, c californica, Rissoina, 137 californica, Rupellaria, 421 californicum. Caecum, 147, fig. 37g californicu7/t, Sinum, 190 californicus, Capulus, 168 californicus, Conus, 265