INDEX. 



265 



Comoserls, Z46. 



Conocyathus, i^-j. 



Constellaria, 244. 



Continuous development, 75. 



Conversion, chemical, of tissues, 9. 



Coppinia, 91. 



Coral, 153. 



Cioral of commerce, 254. 



Corai-reefs, 191 — 5. 



Corals, 140, 153. 



Corallite, 155. 



Coralliuin, i«ores of, 141; corallum of, 

 154, zio; distribution of, 232, 234. 



Corallum, structure of, 153—62 ; de- 

 velopment of, 173 — 8, 185—90; of 

 Tioantharia, 201 — 5 ; oi Alcyonaria, 

 159, 209 ; oi Etcgosa, 214. 



Corbula, of Plutmtlaria cristata, 95. 



Cordylophora, gonophores of, 44, 45, 

 88 ; development of, 54 ; cosnosarc 

 of, 82 ; tentacles of, 86 ; distribution 

 of, 126, 127. 



Cortiularia, 160, 209. 



Coronets, 155. 



Corynactfs, 200, 201. 



Coryne, gonophores of, 41, 88, 89 ; 

 tentacles of, 86 ; distribution of, 

 126. 



CoryniudcB, 89. 



Coryni'icc, general characters of, 79, 

 82; tentacles of, 32, 85—8; ccei.o- 

 sarc of, 82 ; polypary of, 35, 85 ; 

 polypites of, 29, 85 ; gonophores of, 

 40—6, 88, 89 ; development of, 

 54 ; families of, 89 ; distribution of, 

 126, 127. 



Costffi, 156. 



Craspeda, 134. 



Craspedota, 120. 



Cretaceous Corals, 246. 



Cryptangia, 247. 

 Cryptocarpse, 120. 

 Cryptolaria, 128. 



Ctenocyst, 144, 166. 

 Ctenop/iora, type of, 142 ; general 

 characters of, 139, 142, 196, 216 i 

 form and size of, 140, 216—9; 

 canal system of, 144, 219 ; tentacles 

 of, 225 ; tesumentary organs of, 

 149, 152; thread-cells of, 151 ; cte- 

 nophores of, 164 ; nervous system 

 of, 167; organs of sense of, 166, 

 168 ; reproductive organs of, 169 ; 

 habits of, 229 ; phosphorescence of, 

 23G ; develo])ment of, 178 ; families 

 of, 230 ; distribution of, 233—5. 

 Ctenophoral canais, 146, 219. 

 Ctenophores, 143, 164. 

 Cunina, development of, 60. 61 ; 



pouches of, 116. 

 Cyanea, 47, 64, 127. 

 Cyathaxom'a,zi4, 238. 

 Cyathaxonidce, 216, 237. 

 Cyathophorn, 239. 

 (JynilwphyViidce, 216, 237, 244, 245. 



Cyathophyllum, 184, 215, 2}S. 

 Cyathoseris, 247. 

 Cycle, of septa, 175. 

 Cyclocyathus. ij^b, 

 Cyclolites, 240. 

 Cycloseris, 240. 

 Cyclosmilia, 247. 

 Cydippe, 142. 

 Cyphastrcea, 240. 

 Cystipliyllidce, 216, 237, 24;^ 

 Cystiphyllum, 215, 238. 



Dactylosmilia, 246. 



Danaia, 244. 



Dasmia, 247. 



Dasmidce, 207, 237, 247. 



Dasyphyllia, 240 



Definite gemmation, 1S4. 



Dekaia, 244. 



Deltocyathus, 247. 



Dendracis, 247., 



Dendrophyllia^ 241. 



Dendropora, 244. 



Dendrosmilia, 247. 



Dendrostyles, of Rhhostomidce, 49. 



Depastrum, 121. 



Deposition, chemical, in tissues, 9 



Deruiosclerites, 160. 



Dcs7nophyllu»i, 240. 



Development, of animals, 14, 18, 70 ; 

 of Cceleiiterata, 14, 17, 18 ; of Hy- 

 drozoa, 51 ; of Aclinuxoa, 170; of 

 HydridcB, 51 ; of Corynidce, 54 ; of 

 SertularidcB , 56 ; of Calycophondcs , 

 57 ; of Physopkoridce, 57 ; of Me- 

 dusidce, 60 ; of Luccrnaridcs. 64 ; 

 of Zoantharia and Alcjjonaria, 170, 

 185 ; of Ctenophora, 178. 



Devonian Corals, 244. 



Deuterozooids, 74. 



Dicoryne, 88. 



Digestive sac, of Actinozoa, 132, 141, 

 144, 220. 



DimorpttastrcEa, 247. 



Diphydrs, 100 



Diphyes, 50, 96, 99, 100, 128. 



Diphyozooids, 100, 127. 



Diploctenium, 246. 



DiplohcElia, 247. 



Diplonema, 63. 



Diploria, 240. 



Disc, gelatinous, of Mediisida; and 

 LucernaridcB, 34 ; of Actinia and 

 its allies, 131, 198. 



Discocyathtis, 24,6. 



Discontinuous development, 73. 



Discosoma, 199. 



Discotrochus, 247. 



Dissepiments, 155. 



Dis*al extremity, of hydrosoma, 25 ; 

 of polypite, 29. 



Distal nfctocalyx, of Diphyes and 

 Abyla, 96, 98. 



Distribution, of Ccelenterata, 13 ; of 

 Hydrozoa, 126; of Actinozoa, 231. 



