INDEX 



607 



Corethraster, JOS 



Corium (Moll.), 39 ; (Echin.), 414 



Corona, 339 



Coronaster, S99 



Corpus epitheliale, 171 



Corylocrimis, 332 



Coryptella, 13 



Costals (Grin.), 371 



Oranchia, 24 



Crassatella, 49 



Crassatellidce, 17 



Orenella, 115 



Orepidulidce, 138 



Cribrella, 299 



,, sexradiata, 506 

 Crinoidea, 302-316 ; arm, 372 ; arm, sec- 

 tion, 413 ; ovarial pinnule, section, 500 

 Orioceras stage, 68 

 Crista acustica, 169 

 Cromyoci-inus, 304 

 OrossasteTj 298 

 Orotalocriiiidce, SOS 

 Crotalocrinus, SOS 



pulcher, 373 



,, rugosus, arm disc, 372 



OryptoHastus, 315 

 Cryptochiton, 41 

 C'ryptodon Mo$eley% 50 

 Gryptosohisma, 315 

 Gryptozonia, 297 

 Crystalline stylet, 191 

 Ctenidium, 84, 85 

 Ctenodiscus, 296 



,, procurator, 296 



Gtenopidce, 102 

 Cucumaria, 2S7 



„ crocea, 502 



,, crucifera, cruciform body, 337 



,, doliolum, section, 517 



,, frondosa, 488 



,, Laco.zii, 464 



,, Icemgata, 502 



„ Icmgipeda, "stool," 337 



„ nvinuta, 502 



„ planci, 287 



Culcita, 297 

 Cultellus, 19 

 Gupressocrinus, 304 

 Cuspidaria, 21 

 Guspidaridm, 21 

 Cuttlefish [ = Cephalopoda), 21 

 Cuvierian organs (Hoi.), 488 

 Gyathocrinidm, 304 

 Gyathocrinus, 304 ; apical system, 329 



,, longiiiutniis, 304, 364 



Cychis, 81 



,, cornea, development, 262, 263 

 Gydoplioridce, 5 

 Cydophonts, 100 

 Gyclostoma,, 100 



elegoMS, nervous system, 139 ; 

 radula, 182 

 Gydoslomidm, 6 



Gylichna, 46 



Cymbulia, 11 ; larva, 257 

 Gymhulidos, 11 

 CymbuHopsis, 11 

 Gyphosoma, 290 

 Gyphosomatidce, 290 

 Gypraea, 5 

 Cyproxidce, 5 

 Cyrena, 17 

 Gyrenidce, 17 

 Gyrtoceras group, 68 

 Gystechinus, 293 



,, vesica, gonads, 499 



Gystidea, 313 

 Gysioblastus, SIS 



,, Leuchtenbergi, 312 ; apical 



side, 332 

 Cystocidaris ( = EcMnocystites), 289 

 Gystocidaroida, 289 

 Gystocrinoidea, 313 

 Gystoid stage, 544 

 Cytherea [ileretrix), 18 

 „ chione, shell, 63 



Daudebardia (Helicophanta), 9 

 brevipies, 9 



rufa, intestine, section, 

 39 ; uephridia, 220 ; 

 pallial organs, 76, 77 

 ,, sanlcyi, 76 



Becadocrinidee, 304 

 Decadocrinus, 304 

 Decapoda, 24 

 Deima., 285 

 Deimatidoe, 285 

 Delphinulidre, 170 



Deltoid plates (Blast.), 331 ; (Criu.), 364 

 DendrochirotcB, 287 

 Bendrocrinidce, 304 

 Dendrocrinus, 304 

 Dendronotidm, 13 

 Dentalium, 13, 33 ; shell, 59, 156 



,, entale, 113, 159 ; alimentary 



canal, 193 ; larva, 258 ; on- 

 togeny of, 258 

 Dermatobranchus, 48 

 DexiobTanchcea, 11 

 Dextral twist (Gastr.), 56, 60, 160 

 Diadema, 290 



,, seiosum, 392 ; compound eye, 

 469 

 Diadeinatidm, 290 

 JJiadematoida, 290 



,, apophyses, 350 



Dialyneurous nervous system (Gastr.), 138 

 Diaphragm (Ceph.), 127 ; cartilage, 127 

 Diaulula, 13 

 Dibranchia, 24 ', eye development, 171 ; 



musculature, 127 ; shells, sections, 69 

 Dicera.s, IS 

 Dichocrinus, 308 

 Dicyclic base (Crin.), 328 

 Dicyclicu, 304 



