268 



INDEX. 



Meli/cea. 154, 210. 



Membrana intermedia, 16. 



Mennphyllum, 145. 



Mertensia, ijj. 



Merulina, zo8. 



Merulinidts, 208, 237. 



Mesenteries, oi Actinoxoa, ill — 4, 137, 



146, 172. 

 Metagenesis, 74. 

 Metamorpiiosis, 73. 

 MeCastrcea, 247. 

 Michelinia, 2j8. 

 Micrabacia, 247. 

 Micropyle, of animal ovum, 71. 

 Micrusolena, 246. 

 Millepora, 259. 



Millepondce, 205, 206, 237, 244, 247. 

 Mini/as, 16 j. 

 M^andrastrcea, 246. 

 Mceandrina, I4Z, 187, 199, 20J,2J2, 239. 

 Monoecious forms, of Hydrozoa, 50, 



112: 01' Aclinoxoa, 169, 209. 

 Montlivaultia, 259. 

 Mopsea, 154, 210. 241. 

 Mouth, of Hydrozoa, 29, 86, 88; of 



^c^jwozoa, i}i,i4i; of Ctenophora, 



218. 

 Movements, of Hydrozoa, 2;, 27, j6; 



of Actinoxoa, ij8, 162, 210 ; of CYe- 



nophora, 229. 

 Mucous layer, of blastoderm, 16. 

 Mulberry-mass, 16. 

 Muscular system, of Hydrozoa, j6 ; 



of Actinozoa, 162. . 

 MycetophyUia, 240. 

 Myriotheia, 82, 87. 



Nectocalyces, 27, j6, 70 ; of Calyco- 



p/ioridce, 96—9 ; of PkysophoridtB, 



107; of MedusidcB,\\(>. 

 Nectocalycine canals, 37. 

 Nectosac, 36. 



Nematophores, of Sertularidce, 34, 93. 

 Ncmopsis, 84. 

 Nervous system, of Medusidcs, 39 ; of 



Actinia, 166 ; of Ctenophora, 167. 

 Neural region, 17. 

 Nutritive organs, of Hydrozoa, 28 ; of 



Actinozoa, 141. 



Oceania turrita, marginal bodies of, 



OceanidiP, 119. 



Ocelli, 38. 



Oculinn, 240. 



Oculinid<B, 203, 207, 237, 246, 247. 



Ori/roe, 234. 



Oldliaunffi, 130. 



Onipliyina, 244 



Operculum, of Campanularia fasti- 

 ii'Ota, 92. 



o'lal can.ils, of Ctenophora, 220. 



Older, of septa, 175. 



Oiders, of Hydrozoa, 79 j of Actino- 

 zoa, 196. 



Organ.pipe Corals, 209. 



Oroseris, 239. 



Otolites, 39. 



Outer layer, of blastoderm, 16. 



Ova, of animals, 14, 71 ; of Hydrozoa, 

 50; of Actinozoa, 169. 



Ovaria, of Hydrozoa, 40, 50; of Ac- 

 tinozoa, 169. 



Ovigerous vesicles, of Sertularidce, 4,^. 



Pachygyra, 239. 



Pachyphyllum, 244. 



Pali, iss. 



PalcEocyclus, 744. 



Palpocils, 93. 



Palythoa, 141. 



Paracyathus, 240. 



Paragastric canals, of Ctenophora, 

 145, 220. 



Parasitic forms, of Hydrozoa, 61, 83 ; 

 of Actinozoa, 198, 233. 



Paras?nilia, 246. 



Parietal genim.ition, of /ic/moxofl, 183. 



Parthenogenesis, 74; theory of, 78. 



Pavonaria, 240. 



Peachia, 142, 199, 200. 



Pedicle, of tentacle in Hydrozoa, 33. 



Peduncle, of polypite, 29, 31. 



Pelagia, structure of, 40, 123 ; de- 

 velopment of, 68; phosphorescence 

 of, 129. 



PelagidcB, 125. 



Pennaria, 87—9. 



Pennatula, 111 — i, !■}!. 



Pemiatulidce, 163, 186,210—3,214,235, 

 237, 246, 247. 



Pentacoema, 246. 



Peplosmilia, 246- 



Perforata, 158, 161, 203, 206, 237, 242. 



Perigonimus, 87 - 9. 



Periplast, 10. 



Peristomial space, 132, 198. 



Permian Corals, 245. 



Phanerocarpas, 120. 



Phillipsastrcea, 238. 



Philomedusa, 142, 233. 



Phosphorescence, of Coelenterata, 7 ; 

 of Hydrozoa, 128 ; of Pennatulidce, 

 212 ; of Ctenophora, 230. 



Phyllactis, 200. 



Phyllangia, 241. 



Phylloccenia, 240. 



Phyllocyst, 36. 



Fhyogemmaria, of Velella, 105. 



Physalia, thread-cells ol, 5 ; villi of, 

 3 1; tentacles of, 32, 33, III; develop- 

 ment of, 58 ; pneumatophore of, 

 loi, 107; gonophores of, ill, 112; 

 distribution of, 127. 



Physaliadce, 114. 



Physical elenents, relations to, of 

 Hydrozoa, 126; of Actinozoa, 231. 



Pkysoptiora, loz. 107 — 12. 



Physophoriadcs, 113. 



Pkysophuridce, general characters of. 



