INDEX. 



265 



of, 41, 88, 89; 



distribution of, 



1 



Comoscris, 246. 

 Conocyathus, 247. 

 Constellaria, 244. 

 Continuous development, 73. 

 Conversion, chemical, of tissues, 9. 

 Coppinia, 91. 



Coral, 155. 



Coral of commerce, 234. 



Coral-reefs, 191— 5. 



Corals, 140, 155. 



Corallite, 155, 



Corallitim, pores of, 142; corallum of, 

 154, 210; distribution of, 232, 234. 



Corallum, structure of, 153—62; de- 

 velopment of, 173 — 8, 185—90; of 

 Zoantharia, 201—5 ; of Alcyonaria, 

 159, 209 ; of Rugosa, 214. 



Corbula, of Plumularia cristata, 95. 



Cordylophora, gonophores of, 44, 45, 

 88 ; development of, 54 ; ccenosarc 

 of, 82 ; tentacles of, 86 ; distribution 

 of, 126, 127. 



Cor nul aria, 160, 209. 



Coronets, 155. 



Corynactis, 200, 201. 

 Coryne, gonophores 



tentacles of, 86 ; 

 126. 



Coryniadce, 89. 



Corynida:, general characters of, 79, 

 82; tentacles of, 32, 85—8; cceno- 

 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. 



Costa?, 156. 



Craspeda, 134. 



Craspedota, 120. 



Cretaceous Corals, 246. 



Cryptangia, 247. 



Cryptocarpa?, 120. 



Cryptolarta, 128. 



Ctenocyst, 144^ 166. 



Ctenophora, "type cf, 142; general 

 characters of, 139, 142, 196, 216 ; 

 form and size of, 140, 216—9; 

 canal system of, 144, 219 ; tentacles 

 of, 225 ; tegumentary 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, 

 230 ; development of, 178 ; families 

 of, 230 ; distribution of, 233—5. 



Ctenophoral canals, 146, 219. 



Ctenophores, 143, 164. 



Cunina, development 

 pouches of, 116. 



Cyanea, 47, 64, 127. 



Cyathaxoni a >zi 4, 238. 



Cyathaxonid.ee, 216, 237, 



Cyathophora, 239. 



tyathophyllidcz, 216, 237, 244, 245. 



of, 60. 61 



Cyathophyllum, 184, 215, 238. 

 Cyathoseris, 247. 

 Cycle, of septa, 175, 

 Cyclocyathus. 246. 

 Cyclolites, 240. 

 Cy closer is, 240. 

 Cyclosniilia, 247. 

 Cydippe, 142. 

 Cyphastrcea, 240. 

 Cystiphyllidce, 216, 237, 244. 

 Cystiphyllum, 215, 238. 



Dacfylosmil/a, 246. 

 Dana/a, 244. 

 Das/nia, 247. 

 Dasmidce, 207, 237, 247 

 Dasyphyilia, 240 

 Definite gemmation, 184. 

 Dekaia, 244. 



Deltocyat/ius, 247. 



Dendracis, 147 .^ 



Dendrophyllia, 241. 



Dendropora, 244. 



Dendrosmilia, 247. 



Dendrostyles, of Rhizostomidce \ 49. 

 Bepastrum, 121. 



Deposition, chemical, in tissues, 9 

 Dermosclerites, 160. 

 Desmophyllum, 240. 



Development, of animals, 14, 18, 70 ; 

 of Ccelenterata, 14. 17, 18 ; of Hy~ 

 drozoa, 51 ; of Actinozoa, 170; of 

 Hydridce, 51 ; of Corynidce, 54; of 

 Sertularidce , 56 ; of Calycophoridce > 

 57; of Physophoridce, 57; of Me- 

 dusidce, 60 ; of Lucernaridce, 64 ; 

 of Zoantharia and Alcyonaria, 170, 

 185 ; of Ctenophora, 178. 



Devonian Corals, 244. 



Deuterozooids, 74. 



Dicoryne, 88. 



Digestive sac, of Actinozoa, 132, 141, 

 144, 220. 



Dimorphastrcea, 247. 



Diphydse, 100 



Dip/iyes, 50, 96, 99, 100, 128. 



Diphyozooids, 100, 127. 



Diplocteniu?n, 246. 



Diplohcelia, 247. 



Diplonema, 63. 



Diploria, 240. 



Disc, gelatinous, of Medimdce and 

 Lucernaridce, 34 ; of Actinia and 

 its allies, 131, 198. 



Discocyathus, 246. 



Discontinuous development, 73. 



Discosoma, 199. 



Discotrochus, 247. 



Dissepiments, 155. 



Distal extremity, of hydrosoma, 25 ; 

 of polypite, 29. 



Distal nectocalyx, of Diphyes and 

 Abyla, 96, 98. 



Distribution, of Ccelenterata, 13 ; of 



Ilydrozoa, 126; of Actinozoa, 231. 



