X 



Abyla, 149. 

 Acabaria, 182. 

 Acalephae. 156. 

 Acanella, 182. 

 Acantharia, 23. 

 Acanthascus, 92. 

 Acanthastraea, 196. 

 Acanthella, 96, 133. 

 Acantliin. 21. 

 Acanthobdella, 449, 512, 



513, 517. 527. 

 Acanthcbotmium, 245, 



259. 



Acanthocepbala, 293. 

 Acanthochiton, 392. 

 Acanthodadiuni. 133. 

 Acanthocotyle, 234. 

 Acanthocystis, 18. 19. 

 Aoanthodoris, 412. 

 Acanthodrilus 450, 500, 



501, 503, 511. 

 Acanthogorgia, 182. . 

 Acanthoisis, 182. 

 Acanthometra. 21, 23. 

 Acantbonida, 23. 

 Acanthopora 196. 

 Acanthoptilum, 181. 

 Acarnus, 96. 

 Acaulis, 130. 

 Acephala, 320. 

 Acephalocyst. 261. 

 Accra, 405, 406. 

 Acerominyas, 187. 

 Aceros, 223. 

 Achaeta. 509. 

 Acbaradria, 130. 

 Achatina, 380. 

 Acboloe, 478. 

 Acicula, 396, 398. 

 Aciculinae, 97. 

 Aciculites, 94. 

 Aciculum, 460. 

 Acineta, 53. 

 Acinetaria, 26, 51. 

 Acis, 183. 



Acmaea, 394. 

 Acmostonmm, 220. 

 Acoela, 211, 218. 

 Acoeta, 478. 

 Acontia, 105. 

 Acotylea, 222. 

 Acrasis, 18. 

 Acraspeda, 156. 

 Acraspedote, 109 

 Acrobelia. 195. 

 Acrophalli, 278. 

 Acrorbynclins, 220. 

 Actaeon, 361, 364. 372, 



385, 404, 405, 406. 

 Actaeoni;), 414. 

 Actinauge, 187. 

 Actine, 82. 

 Actinelida, 23. 

 Actineria, 188. 

 Acthierus. 187. 

 Actinia, 187. 

 Actiniaria, 183. 

 Actinidae. 188. 

 Actininae, 187. 

 Actinioides, 187. 

 Actinobolvis. 45. 

 Aetinocephalus. 59. 

 Actinodendron 183. 

 Actinogoniiun 130. 

 Actinoloba, 187 

 Actinolophus. 19 

 Actinomonas, 30. 

 Actinophrys, 19. 

 Actinopsis, 188 

 Actinosphaerinm . 19. 

 Acystosporidia. 62. 

 Actinostola, 157. 

 Actinothrix, 187. 

 Actinotriclia, 49. 

 Actinotrocha, 5-i5. 

 Actinozoa, 168. 

 Actinurus. 308. 

 Acyclus, 307. 

 Adamsia, 187. 

 Addisonia, 394. 



2 Q 



Adelea, 61. 

 Adelocodonic, 126. 

 Adelocodonic gonopliore, 



120. 



Adeona, 566. 

 Adeonella, 566. 

 Adeorbis, 398. 

 Adineta, 308. 

 Adinida, 34. 

 Adoral row, 40. 

 Adradial, 118. 

 Aegina, 136. 

 Aeginella, 136. 

 Aetea, 564. 

 Aegineta, 136. 

 Aeginodiscus, 136. 

 Aeginodorus, 136. 

 Aeginopsis, 109. 

 Aeginorliodus, 136. 

 Aeginuva, 136 

 Aegir, 188. 

 Aegirus, 369, 412. 

 Aegyria, 46. 

 Aeolidioidea, 412. 

 Aeolis, 412. 

 Aeolosoma, 455. 

 Aequorea, 134 

 Aequoridae, 134. 

 Aetbalium, 16. 

 Aetheria, 347. 

 Agalma, 153. 

 Agalmopsis, 153. 

 Agaricia, 196. 

 Agelas, 96. 

 Aglaisma, 149. 

 Aglantha, 135. 

 Aglaophenia, 133. 

 Aglanra, 135. 

 Aglauropsis, 135. 

 Agliscra, 135. 

 Aiptasia, 187. 

 Air-funnel, 150. 

 Al = alimentary. 

 Alanrina, 219. 

 Albertia, 309. 



