263 



NDEX. 



Abyla, 98,99, loi. 



Acalephes Simpies, 114. 



Acalephes Hydrostatiques, 114. 



Acanthoccenia, 246. 



Acanthocyatlius, 240. 



Acaulis, 87, 88, 89. 



Accrvularia, 158, 244. 



Acontia, 1%$. 



Arraspeda, 120. 



Acrocyst, 95. 



dctinacis, 247. 



Actinia, iji, 146, 166, 172, 199, 235. 



Actinidce. 205. 



Actinoloba, 198. 



Actinomeres. 14J. 



Actinopsis, 198. 



Actinosome, 14J. 



jfciinoxoa. type of, iji ; general cha- 

 racters of, 19, ij8; development of, 

 170; classification of, 196 ; distri- 

 buiiou of, 2ji; relations of, to time, 

 236. 



Adamsia, 150. 198. 



AdelastrcEci, 239. 



Jhlgiiia, 116. 



JEginidce, 120. 



^'g m a;jj> 2ls , 60 . 116. 



JEquoridcp^ 120 



Agalma, 102, 108, iio, m, 112. 



A^amogenesis, 74. 



Air-vesicle, oi Phi/sopkuriciu-, loi. 



Alcyonaria, general characters ot, 139, 

 196, 208; nutritive cavity of, 141 ; 

 tentacles of, 148 ; thread-cells of, 

 151 ; coralium of, 154, 159, 162 , de- 

 velopment of, 170; families o', 213; 

 distribution of, 231, 233 ; relatii ns 

 of, to time, 237, 243. 



Alcyonidce, 213 ; coralium of, 160, 162, 

 209. 



Alcyonium, 161, 208, 232, 235. 



Alimentary canal, of Cceletiteraia, j, 

 29, 141. 



Alternate generation, 76. 



Alveolites, 238. 



Amoeboid condition of Hydra, \\, 52. 



Amplexus, 238. 



Anabacia, 247. 



Androphore, 45. 



Ane?noiita, 199. 



Angeaslrixa, 246. 



Angel-band, 34. 



Anisophyllum, 244. 



Anomophyllum, 246. 



Antagonism, between development 



and reproduction, 72. 

 Antennularia, 57, 127. 

 Anthen, 182. 199, 201. 

 Antipathes, 200, 201. 

 Antipalhida;, 206. 

 Apertures, of somatic cavity in Acti- 



nuxoa, 142. 

 Apical area, of Ctenojikora, 143, 145, 



219. 

 Apical canals, 145, 

 Apical pores, 142, 145. 

 Apolemia, 102, 108, no, in. 

 Apolemiadce, 113. 

 Aporosa, 158, 161, 162, 203, 20&, 237, 



242. 

 Appendages, of Eydroicoa,z'j,&)\ of 



Huvmiphurci, 152 ; of Cteuuphvrat 



218. 

 Arachnactis, 163, 199. 

 Aneacis, 247. 

 Aspidtscus, 246. 

 Astrangia, 241. 

 Astroccenia, zi<). 

 Astrcea, 241. 



AstrceidcE, 203, 207, 232, 237, 245—7. 

 Astresopu7-a, 241. 

 Astruha;lia, 247. 

 Athorybia, 107, io3, nc, iiz. 

 AthoryhiadcE, 03. 

 Atolls, 191— 4. 

 Atractylis,6z, 88, 89. 

 Aulacophylluvi, 238. 

 Aulopht/llum, 245. 

 Aniopora, 204, 244. 

 Auloporidce, 204, 206, 237, 244, 245. 

 Aurelia, 47, 64, 123, 127, iz8. 

 Axoplq/lium, 245. 

 Axopora, 247. 

 Axosmilia, 246. 



S 4 



