5i8 



MOLLUSCA — BRACHIOPODA 



Columbella, 423 ; radula, 222 



Columbellaria, 4^0 



Columhellina, 4^0 



Cohtmna, 328, 330, 443 



Cominella, 16, 4^4 



Composition of shell, 252 



Concha, 463 



Conchidium, 497, 498, 500, 505 ; strati- 

 graphical distribution, 507, 508, 511 



Concholepas, 267, 4£3 



Conidea, 42S 



Conocardium, 455 



Conorbis, 426 



Conus, 247, 275, 426 ; poisonous bite, 

 65 ; tooth, 66 ; shell, 69, 255, 260 ; 

 mimicked by Strombus, 69 ; prices 

 given for rare, 121 ; spawn, 125 ; 

 radula, 218, 220 ; operculum, 269 



Cookia, 409 



Coptochilus, 314, 414 



Coralliophaga, 451 



Coralliophiia, 75, 423 



Coralliophilidae, radula, 216 



Corambe, 434 



Corasia, 311, 319-321 



Corbicula, 15, 288, 292 f., 453 



Corbis, 452 



Corbula, 456 



Gorilla, 303 



Corona, 27, 442 



Coronaria, 297 



Cory da, 346-351, 44I 



Coryphella, 432 



Cosmoceras, 399 



Cowry used as money, 96 



Coyote trapped by Haliotis, 57 



CrancMa, 391 



Crania, 464, 467, 468, 469, 471, 472, 

 473, 475, 476, 477, 487; distribu- 

 tion, 485 ; fossil, 493, 494, 504 \ strati- 

 graphical distribution, 506, 507, 508, 

 510 



Craniidae, 487, 496, 504, 508 



Cranopsis, 265, 4O6 



CraspedocMton, 403 



Craspedopoma, 298, 414 



Craspedostoma, 4O8 



Crassatella, 451 



Cratena, 4^2 



Crawling of Helix, 45 



Cremnoconchus, 16, 302, 413 



Crenatula, 75, 449 



Crenella, 449 



Crenipecten, 450 



Crepidula, 248, 257, 412, 41^ ', para- 

 sitic, 78 



Crepipatella, 248, 412 



Creseis, 436, 436 ; eyes, 186 



Crimora, 434 ; radula, 229 



Crioceras, 247, 399, 399 



Cristigibba, 311, 319, 320, 441 



Crossostoma, 4O8 



Crucibulum, 248, 412 



Cryptochiton, 245, 371, 402, 404 



Cryptochorda, 425 



Cryptoconchus, 404 



Cryptophthalmus, 430 



Cryptostracon, 353, 44I 



Ctenidia, 151 — see Branchiae 



Ctenopoma, 346-351, 414 



Gucullaea, 274, 448 



Cultellus, 457 



Guma, 423 



Cumingia, 453 



Ciispidaria, 459 ; branchiae, 168 



Guvierina, 436, 436 



Gyane, 410 



Cyathopoma, 247, 268, 314, 338, 414 



Cyclas, 453 ; veliger, 132 ; ova, 146 ; 



otocyst, 197 ; C. cornea, thread-spin- 

 ning, 29 ; distribution, 282 

 Gyclina, 454 

 Cyclobranchiata, 156 

 Gyclocantha, 409 

 Cyclomorpha, 414 

 Cyclonassa, 4-23 

 Gyclonema, 409 

 Cyclophoridae, origin, 21 

 Gyclophorus, 302, 306-319, 329-334, 



344, 352-358, 414 ; jaws, 212 ; radula, 



21 

 Cyclostoma, 328, 331-338, 414, 414; 



stomach, 239 ; vision, 184 ; osphra- 



dium, 195 ; nervous system, 205 ; C. 



elegans, 287, 288 

 Cyclostomatidae, origin, 21 ; radula, 



224 ; gait, 199 

 Cyclostrema, 4O8 

 Gyclosurus, 247, 337, 414 

 Cyclotopsis, 338, 414 

 Gyclotus, 296, 319, 320, 414 

 Gylichna, 428, 430 ; radula, 215 

 Gylindrella, 247, 260, 278, 343-355, 



348, 442; monstrosity, 251, 252 

 Cylindrellidae, radula, 233, 234 

 Gylindrites, 430 

 Gylindrobulla, 430 

 Gylindromitra, 425 ; radula, 222 

 Cymbium, 255, 367, 425 ; radula, 221 

 Cymbulia, 437 

 Cymbuliopsis, 437 

 Gynodonta, 424 

 Cijphoma, 419 

 Cypraea, 178, 419 ; prices given for 



rare, 122 ; mantle-lobes, 177, 178 ; 



radula, 224 ; shell, 255, 260, 261 ; G. 



moneta, 96 

 Cypraecassis, 420 

 Cypraedia, 419 

 Cypraeovnla, 419 

 Cyprimeria, 454 

 Cyprina, 4^1 



Cyrena, 15, 453 ; distributiou, 285, 294 

 Cyrenella, 453 



