INDEX 



607 



Corethraster, 298 



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



Corona, 339 



Coronaster, 299 



Corpus epitheliale, 171 



Corylocrinus, 332 



Coryptella, 13 



Costals (Grin.), 371 



Oranchia, 24 



Crassatella, 49 



Orassatettidce, 17 



Crenella, 115 



Orepidulidce, 138 



Cribrella, 299 



,, sexradiata, 506 

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

 tion, 413 ; ovarial pinnule, section, 500 

 Crioceras stage, 68 

 Crista acustica, 169 

 Cromyocrinus, 304 

 Crossaste/; 298 

 Orotalocrinidcc, 308 

 Crotalocrinus, 308 



,, pulcher, 373 



,, negosus, arm disc, 372 



Oryptoblastus, 315 

 Oryptochiton, 41 

 Oryptodon Moseleyi, 50 

 Cryptoschisma, 315 

 Cryptozonia, 297 

 Crystalline stylet, 191 

 Cteuidium, 84, 85 

 Ctenodiscus, 296 



,, procurator, 296 



Ctenopidce, 102 

 G'ucumaria, 287 



crocea, 502 



crucifera, cruciform body, 337 



doliolum, section, 517 



frondosa, 488 



Lacazii, 464 



Icevigata, 502 



longipeda, "stool," 337 



minuta, 502 



planci, 287 

 Culeita, 297 

 Cultellus, 19 

 Cuprcssocrinus, 304 

 Cuspidaria, 21 

 Cuspidaridce, 21 

 Cuttlefish ( = Cephalofiodu), 21 

 Cuvierian organs (Hoi.), 488 

 Cyathocrinidce, 304 

 Cyathocriuus, 304 > apical system, 329 



,, longimanus, 304, 364 



Cyclns, 81 



,, cornea, development, 262, 263 

 Gydophoridce, 5 

 Cydophorus, 100 

 Cydostomu, 100 



,, elegans, nervous system, 139 ; 



radula, 182 

 Cydostomidce, 



Cylichna, 46 



Cymbulia, 11 ; larva, 257 

 ' 'ymAulidce, 11 

 Cymbuliopsis, 11 

 Gyphosoma, 290 

 GyphosomatidcE, 290 

 Cypraea, 5 

 (Jypraeidce, 5 

 Cyre.ua, 17 

 Cyrenidce, 17 

 Cyrtoceras group, 68 

 Cystechinus, 293 



,, vesica, gonads, 499 



Cystidea, 313 

 Cystoblastus, 313 



,, Leuchtenbergi, 312 ; apical 



side, 332 



Cystocidaris ( = Echinocystites), 289 

 C'ystocidaroida, 289 

 Cystocrinoidea, 313 

 Cystoid stage, 544 

 Ci/tkerea (Meretrix), IS 

 chione, shell, 63 



DAUDEBARDIA (Helicophanta], 9 

 ,, breoipes, 9 



/'I/fa, intestine, section, 



39 ; nephridia, 220 ; 

 pallial organs, 76, 77 

 ,, saulcyi, 76 



Decadocrinidce, 304 

 Decadocrinus, 304 

 Decapoda, 24 

 Dei ma, 285 

 Deimatidce, 285 

 Ddphiiiuli<li.i:, 170 



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

 Dendrochirotce, 287 

 Dendrocrin idee, 304 

 Dendrocrinus, 304 

 Dendronotidcc, 13 

 Dentaliuin, 13, 33 ; shell, 59, 156 



,, entalc, 113, 159 ; alimentary 



canal, 193 ; larva, 258 ; on- 

 togeny of, 258 

 Dermatobranchus, 48 

 Dexiobranchcea, 11 

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

 Diadema, 290 



,, setosi'ni, 392 ; compound eye, 



469 



Jtiodematidce, 290 

 Diudematoida, 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 

 Diceras, IS 

 Dichocrinus, 308 

 Dicyclic base (Criu.), 328 

 Dicyclica, 304 



