INDEX OF SUBJECTS 



Acantharia, 70, no. 



Acanth&cystis, skeleton, 75, 82 ; budding, 



95; axial filaments, 101 ; classification, 



109 ; centrosomes, 266. 

 Acanthonida, iio. 



Acanthosporidoe, 168. 



Acephalina, 168. 



Acineta, budding, 199; classification, 210. 



Acineta-theory, Stein, 13. 



Acinetidae, 210. 



Actinelida, 1 10. 



Actinobolus, food-taking, 50; fig. p. 51 ; 



tentacles, 183 ; classification, 206. 

 Actinocephalidse, 167. 

 Actinocephahis, 168. 

 Actinolophus, skeleton, 74 ; pseudopodia, 82 ; 



classification, 109 ; phylogeny, 204. 

 Actinomonas, 103 ; fig. p. 103 ; classifica- 



tion, 137. 

 Actinophrys, 109 ; fig. p. 16; pseudopodia, 



82 ; contractile vacuole, 87; conjugation, 



97, 218 ; axial filaments, 101. 

 ActinospJuerium, alveoli in protoplasm, 35; 



skeleton, 36 ; encystment, 90 ; artificial 



reproduction, 97 ; axial filaments, iai ; 



membrane, 105 ; classification, 109 ; con- 



jugation, 218; mitosis, 264; maturation, 



236 ; irritability, 295, 301. 

 Actinotricha, 209. 

 Actipylea, 70, no. 

 Actissa, fig. p. 17. 

 Adelea, conjugation, 158, 229 ; classifica- 



tion, 1 68 ; maturation, 237. 

 Adinida, 5, 140. 

 adoral zone, 6, 171. 

 sEgyria, 207. 

 Aggregate*, 167. 

 Aggregatidae, 167. 

 Allomorphina, 108. 

 alternation of generations, 12; in Reticu- 



lariida, 74, 95. 



alveolar structure of protoplasm, 35. 

 Alveolina, 107. 



Alveolininae, 107. 



Ammodiscus, 107. 



Amaba coli, fig. p. 63. 



Amoebaea, 18. 



Amceba proteus, ectoplasm, fig. p. 36; 

 pseudopodia, 81 ; nucleus, 87; contractile 

 vacuole, 54, 88 ; fig. p. 89 ; conjugation, 

 97, 105 ; classification, 105 ; conjugation, 

 218 ; nucleus, 252, 276; secretion, 291, 

 292 ; irritability, 295, 297, 301. 



Amoebida, classification, 105. 



Amcebidae, classification, 105. 



Amcebosporidia, 169. 



Amphidinium, 140. 



Amphidoma, 140. 



Amphileptus, 206; irritability, 295; food- 

 selection, 305. 



Amphilonchidae, no. 



Amphimonas, 137. 



Amphisia, 209. 



Amphisolenia, 140. 



Amphistegina, 109. 



Amphistominae, 106. 



Amphitholus, 140. 



Amphitrema, 106. 



Amphizonella, 106. 



Amphoroides, 1 68. 



anal tube, in Infusoria, 186. 



Ancistrum, 207. 



Ancyromonas, 137. 



Ancyrophora, 1 68. 



androgonidia, in Volvox, 134. 



Androspyridae, no. 



Anentera, 9. 



Angiosporea, 167. 



Animalcula, 7. 



animals and plants, 22. 



anisogamy, 224. 



Anisonema, 139. 



anisospore, 95. 



Anomalina, 109. 



Anoplophrya, 207. 



Anthocyrtidae, ill. 



Anthophysa, 137; secretion, 292. 



335 



