INDEX 



Numbers in bold-face type indicate pages on which are given the defini- 

 tions, explanations, and discussions of technical terms; the explanations or dif- 

 ferentiations of taxonomic subdivisions; or the descriptions of genera and 

 species. Since the technical terms and names of systematic subdivisions are in 

 bold-face type in the text, this combination serves the purpose of a glossary. 



Numbers in italics indicate pages on which appear those illustrations that 

 could not be placed on the same pages as the related text matter. 



Abiogenesis, 13 

 Acanthociasma, 71, 258 

 Acanthociasma planum, 258 

 Acanthociasmidae, 71, 258 

 Acanthocystis, 71, 246, 251 

 Acanthocystis aculeata, 251j 

 Acanthometrida, 71, 258 ^ 

 Acanthometridae, 71, 259^1 

 Acanthometron, 7l, 259 

 Acanthometron elasticum, 258 

 Acanthonia, 71, 259 

 Acanthoma tetracopa, 258 , 

 Acanthoniidae, 71, 259 

 Acanthophractida, 71, 259 

 Acarina, 325 

 Acartia, 343 



Acephalina, 74, 291, 293-296 

 Achromatic strands, 21 

 Acineta, 81, 399, 404, 406 

 Acineta divisa, 404, 405 



papillifera, 410 



tuberosa, 404, 405, 406 

 Acinetaria, 399 

 Acinetidae, 81, 400, 404, 406 

 Acinetopsis, 81, 406 

 Acinetopsis tentaculata, 406, 407 

 Acnidosporidia, 76, 266, 326-332 

 Actinelida, 71, 258 

 Actineliidae, 71, 258 

 Actinelius, 71, 258 

 Actinelius primordialis, 258 

 Actinobolus, 77, 346 

 Actinobolus radians, 346 

 Actinolophus, 71, 248 

 Actinolophus pedunculatus, 248, 249 

 Actinomonas, 31, 63, 132 

 Actinomonas mirabilis, 131, 132 

 Actinomyxidia, 75-76, 302, 313-315, 



318 

 Actinophrys, 71, 245, 247, 415 

 Actinophrys sol, 247 



Actinopoda, 71-73, 245-263 

 Actinosphaerium, 13, 21, 71, 246,247, 



415 

 Actinosphaerium eichhorni, 57, 247- 



248 

 Actinotricha, 80, 389 

 Actinotricha saltans, 388, 389 

 Actipylea, 71-72, 255, 256, 258-259 

 Acutispora, 74, 297 

 Acutispora macrocephala, 297 

 Adelea, 74, 278 

 Adelea ovata, 277, 278 

 Adeleidae, 74, 278-279 

 Adeleidea, 74, 267, 271, 276-282 

 Adelina, 74, 278 

 Adelina dimidiata, 278 



octospora, 278 

 Adinida, 61, 97, 98 

 Adoral zone, 29 30, 371, 392 

 Aedes aegypti, 293, 295 

 Aegyria, 78, 357-358 

 Aegyria oliva, 356, 358 

 Aethalium, 187 

 Agamogony, 265 

 Agamont, 265 



Agar-beef-peptone medium, 414 

 Agarella, 75, 311 

 Agarella gracilis, 311, 312 

 Aggregata, 49, 73, 267, 270 

 Aggregata eberthi, 57, 270, 271 

 Aggregatidae, 73, 269, 270-271 

 Akaryomastigont, 164 

 Alexeieff, 43, 332 

 Algae, 35, 91, 95, 107, 116, 178, 179, 



180, 195 

 Allantocystis, 74, 296 

 Allantocystis dasyhelei, 296, 297 

 AUogromia, 70, 232 

 Allogromia fluvialis, 232 



ovoidea, 232, 233 

 AUogromiidae, 70, 195, 226, 232-236 

 AUomorphina, 69, 201 



421 



