INDEX OF SUBJECTS 



343 



Ophryodendridse, 210. 



Ophryodendron, budding, 199; classification, 



210. 

 Ophryoglena, 207. 

 Ophryoscolecidfe, 208. 

 Ophryoscolex, 208. 

 Opisthodon, 207. 

 Orbiculina, 107. 

 Orbi/oides, 109. 

 Orbitolites, 73, 107. 

 Orbulinella, 109. 

 Ornithocercus, 140. 

 Orosphseridfe, in. 

 Orthodon, 207. 

 Oxyrrhis, division, 128; classification, 138; 



nucleus and division-centre, 271. 

 Oxyioxunt, 140. 

 Oxytricha, phylogeny, 202; classification, 



209. 

 Oxytrichidee, 209. 



Pachymyxa, 106. 



Panartidse, no. 



Pandorina, fig. p. 37; colony-formation, 



129; reproduction, 132; classification, 



140; conjugation, 227. 

 pan-sporoblast, 155. 

 paraglycogen, 143. 



Paramceba, reproduction, 59; spore-forma- 

 tion, 93; classification, 105; conjugation, 



218; chromosomes, 233; reductiop, 234; 



division-centre, 276. 

 Paramcecidse, 207. 

 Paramecium, trichocysts, 37, 175; cyclosis, 



173; strength of, 181 ; classification, 207; 



digestion, 282; urea, 291 ; motor response. 



298; irritability, 301. 

 paramylum, in Mastigophora, 117. 

 parasitic Protozoa, 63. 

 Parkeria, 108. 



parthenogonidia, in Volvox, 134, 232. 

 Patellina, 109; conjugation, 219. 

 Pavonina, 108. 

 pellicula, 38, 114, 176. 

 Pelomyxa, 106; protoplasmic structure, 35, 



38; nuclei, 87; vacuole, 87; budding, 95; 



starch digestion, 281 ; irritability, 297. 

 Pelosina, 107. 

 Peneroplidinee, 107. 

 Peneroplis, 107. 



Peranema, motion, 121; classification, 138. 

 Peranemidse, 138. 

 Perforina, 108. 

 Peridinidfe, 140. 

 peridinin, in Dinoflagellidia, 118. 



Peridinium, fig. p. 20; color, 62; shell, 116; 



pseudonoclihtca, 1 36; classification, 140. 

 periplast, 113. 

 Peripylea, 69, no.' 

 peristome, 184. 

 Peritrichida, 171, 209. 

 PeritromidEe, 208. • 

 Peritromus, cilia, 181; phylogeny, 202; 



classification, 208. 

 Petalomonas, 138. 

 Phacodiscidee, no. 

 Phacotidse, 139. 

 Phacotus, shell, 114; classification, 139; 



conjugation, 224. 

 Phacus, fig. p. 19; classification, 138. 

 Phaenocystina, 169. 

 Phseoconchida, in. 

 Phaaocystinida, 11 1. 

 Phseodaria, m. 

 PhfeodinidEe, m. 

 phceodium, III. 

 Phaaogromida, in. 

 Phaeospherida, in. 

 Phalacroma, 140. 

 Phalansteridas, 137. 



Phalansterium, fig. p. 122; classification, 1 37. 

 Phascolodon, 207. 

 Phialoides, 168. 

 Phormocampidje, III. 

 Phormocyrtidse, m. 

 Phormospyridse, 1 10. 

 PhorticidEe, no. 

 phosphorescence, 62, 293. 

 phototaxis, 296. 

 Phractopeltidse, no. 

 phycopyrrin, in Dinoflagellidia, 118. 

 Phyllomitus, 138. 

 Phyllomonas, 137. 

 Phytoflagellida, 19,25, 139. 

 Phytomastigoda, 25. 

 Pileocephalus, 168. 

 Pilulina, 107. 

 Pilulininje, 107. 

 Pinaciophora, skeleton, 75; classification, 



109. 

 Pinacocystis, 109. 

 Pltzodorina, 140. 

 Plagiopogon, 206. 

 Plagiotoma, 208. 

 Plagiotomidee, 208. 

 Plagonidee, no. 

 Plakopus, 106. 

 Planorbulina, 109. 



Plasmodium malaria, 65; conjugation and 

 life-cycle, 160. 



