INDEX 



(Numbers in italic refer to illustrations.) 



Acalepha 79 



Acanthocephala 78, 141, 147, 168, 



395, 396, 397, 460 

 Acanthodea 456, 457 

 Acarina 272, 419, 423 

 Acellular state 356 

 Acnidaria 9, 19, 21, 78, 199, 227, 244, 



324 

 Acoela 71, 139, 148, 172, 196, 210, 



211, 223, 256, 271-277, 279, 281, 



290, 291, 296-298, 301-304, 314, 



315, 320, 321, 337, 368, 386 

 Acoelomata 78, 130, 227, 387, 390, 



391, 464, 465 

 Acontiae 182 

 Acrania 296, 455, 457, 461 

 Ac tinea 89 

 Actiniae 73, 99, 168, 178, 183, 197, 



223, 246 

 Actiniaria 101, 108, 117, 148, 149, 



178, 179, 194, 206, 217, 228 

 Actinodactylus 70 

 Actinula 265 

 Aeginidae 152 

 Aequorea 64, 119 

 Agametes 283, 289 

 Aglaophenia 110, 220 

 Aglaopheniidae 159 

 Agnatha 455, 456, 457, 461 

 Alcyonaria 232 

 Allman 53, 111 

 Alloeocoela 148, 211 

 Alternation of generationes 153, 154, 



215, 219, 242, 307 



Alvarado 2, 26 



Ambulacralia 445 



Ameria 14, 21, 27, 40, 41, 52, 72, 86, 

 192, 195, 253, 266, 285, 346, 388, 

 390, 391, 393, 399, 400, 408, 412- 



414, 417, 427, 429, 440, 448, 451, 

 458, 459 



Amerous state 452 



Amoebae 32 



Amoebocytes 7 



Amoeboid androgamet 297 



Amoebosporidia 357 



Amphibia 37, 457, 461 



Amphioxus 56, 448, 456 



Amphiscolops 316 



An der Lahn 146 



Anderson 465 



Androconjugant 292 



Androgametes 282, 284, 287, 288, 

 290, 292, 295, 307 



Androgamont 283 



Annelida 27, 32, 40, 41, 68, 123, 142, 

 212, 213, 251, 270, 296, 350, 384, 

 386, 390, 400, 401, 403, 405, 412, 



415, 420, 424, 431, 432, 434, 437, 

 442, 454, 460, 463 



Anoplocephala 58 



Anthocaulus 154 



Anthocodium 154, 238 



Anthocyathus 154 



Anthomedusa 10, 11, 67, 242 



Anthophyta 49 



Anthopolyp 98, 105, 112, 115, 116, 



125, 147, 154, 164, 166, 180, 207, 



226, 410 



