INDEX OF SUBJECTS. 



AcANTHARiD^E, characteristics, 347 

 Acanthocyslis, aculeata, division, Fig. 

 101, p. 215 division. Fig. 100, p. 214 

 Key 342 



turfacea, Fig. 67, p. 131 

 spicules, Fig. 144, p. 321 

 Acanthodinium, Key, 304 

 Acanthospora, classification, 432 

 Acanthosporidae, characteristics, 432 

 Accessory chromosomes, 534 

 Acephalina, classification, 428 

 Acinela, Key, 413; sp., Fig. 91, p. 185 

 tuberosa, endogenous budding. Fig. 

 112, p. 231 

 Acinetidse, characteristics, 399 

 Acinetopsis, Key, 413 

 Acradina, Key, 304 

 Acrasida, characteristics, 328 

 Acrasis, Kej', 350 

 Acromaticus, classification, 444 

 Actinellida?, characteristics, 347 

 Aclinobolus radians, Key, 403 



radians, feeding, 182; Fig. 81, p. 

 154 

 Actinocephalidse, characteristics, 431 

 Actinocephalus, classification, 432 

 Adinolophns, Key, 342 

 ActinomjTcida, autogamy, 550 



characteristics, 459 

 Actinophrys sol, fertilization. Fig. 209, 

 p. 501; Fig. 143, p. 320 

 Key, 342 

 kinetic elements. Fig. 53, p. 



102 

 life cycle. Fig. 201, p. 480 

 Actinopoda, characteristics, 318 

 Actinosphwium eichhornii, centro- 

 somcs. Fig. 64, p. 124 

 chromidia, 47 

 fertilization and reduction. 



Fig. 221, p. 530 

 Key, 342 

 pole plates, 82 

 Actinotricha, Key, 410 

 Actipylea, characteristics, 345 

 Acutispora, classification, 431 

 Adaptation to poisons and tempera- 

 ture, 568 

 Adelea, classification, 437 

 Adeleida", characteristics, 437 

 Adinida, characteristics, 278 



Adoral zone, 147 

 Aegyria, Key, 405 

 Aethalia, 331 

 Agamete, 418 

 Agamogony, 236, 416 

 Agamont, 416 

 Agglomerations, 515 

 Agglutinins, 192 

 Aggregata, characteristics, 441 



eberthi, chromosomes. Fig. 222, p. 

 532 

 Aggregatinse, characteristics, 441 

 Akaryomastigonts, 293 

 AUogromia, Key 361 



omforme. Fig. 87, p. 178 

 Alternation of generations, 240 

 Alveolar structure, 42 

 Alveolina, classification, 355 

 Alivisia, Key, 352 

 Amicronucleate ciliates, 72 



possible origin, 581 

 Ammodisculinida?, characteristics, 355 

 Ammodiscus, cla.ssification, 355 

 Amoeba, diploidea, Fig. 230, p. 549 



division type, Fig. 61, p. 118 



Key, 357 



proteus, Fig. 4, p. 22 



vespertilio, Fig. 39, p. 82 

 Amoebsea, characteristics, 335 

 Amoebida, characteristics, 337 

 Amoebidse, characteristics, 338 

 Amour ochceta, Key, 352 

 Amphidinium, Fig. 70, p. 136 



Key, 303 

 Amphildeptus claparedi, Fig. 13, p. 35 



Key, 405 

 Amphilophus, Key, 304 

 Amphilothioidse, Ivey, 302 

 Amphimixis, 553 



Amphimonadidse, characteristics, 292 

 Amphimonas, Key, 310 

 A)nphisia kessleri, Fig. 175, p. 392 



Key, 410 

 Amphisolenia, Key, 304 

 AmphistigirM, classification, 357 

 Amphitrema, Key, 362 

 Atnphizonella, Key, 358 

 Amphorella, Key, 409 

 Amphorocephalus, classification, 432 

 Amphoroides, classification, 431 

 Amylum, 51 

 Anal cirri, 150 



modifications, 155 



