INDEX OF SUBJECTS 



343 



Ophryodendridae, 210. 



Ophryodendron, budding, 199; classification, 



2IO. 



Ophryoglena, 207. 



Ophryoscolecidae, 208. 



Ophryoscolex, 208. 



Opisthodon, 207. 



Orbiculina, 107. 



Orbitoides, 109. 



Orbitolites, 73, 107. 



Orbulinella, 109. 



Ornithocercus, 140. 



Orosphaeridae, in. 



Orthodon, 207. 



Oxyrrhis, division, 128; classification, 138; 



nucleus and division-centre, 271. 

 Oxytoxum, 140. 

 Oxytricha, phylogeny, 202; classification, 



209. 

 Oxytrichidae, 209. 



Pachymyxa, 106. 



Panartidae, 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; reduction, 234; 



division-centre, 276. 

 Paramcecidae, 207. 

 Paramcecium, 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. 

 Peneroplidinoe, 107. 

 Peneroplis, 107. 



Peranema, motion, 121; classification, 138. 

 Peranemidae, 138. 

 Perforina, 108. 

 Periclinidae, 140. 

 peridinin, in Dinoflagellidia, 118. 



Peridinium, fig. p. 2O; color, 62; shell, 116; 



pseudonoctiluca, 136; classification, 140. 

 periplast, 113. 

 Peripylea, 69, I IO. 

 peristome, 184. 

 Peritrichida, 171, 209. 

 Peritromidae, 208. 

 Peritromus, cilia, 181 ; phylogeny, 202; 



classification, 208. 

 Petalomonas, 138. 

 Phacodiscidae, no. 

 Phacoticlae, 139. 

 Phacolus, shell, 114; classification, 139; 



conjugation, 224. 



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

 Phaenocystina, 169. 

 Phaeoconchida, in. 

 Phaeocystinida, in. 

 Phaeodaria, in. 

 Phaeodinidse, n i. 

 phaeodium, ill. 

 Phaeogromida, ill. 

 Phaeospherida, in. 

 Phalacroma, 140. 

 Phalansteridae, 137. 



Phalansteriuni,<[\g.Tp. 122; classification, 137. 

 Phascolodon, 207. 

 Phialoides, 1 68. 

 Phormocampidae, III. 

 Phormocyrtidae, ill. 

 Phormospyridae, 1 10. 

 Phorticidae, no, 

 phosphorescence, 62, 293. 

 phototaxis, 296. 

 Phractopeltidae, 1 10. 

 phycopyrrin, in Dinoflagellidia, Il8. 

 Phyllomitus, 138. 

 Phyllomonas, 137. 

 Phytoflagellida, 19, 25, 139. 

 Phytomastigoda, 25. 

 Pileocephalus, 1 68. 

 Pilulina, 107. 

 Pilulininae, 107. 

 Pinaciophora, skeleton, 75; classification, 



109. 



Pinacocystis, 109. 

 Plczodorina, 140. 

 Plagiopogon, 206. 

 Plagiotoma, 208. 

 Plagiotomidae, 208. 

 Plagonidae, 1 10. 

 Plakapus, 106. 

 Planorbulina, 109. 

 Plasmodium malaria, 65; conjugation and 



life-cycle, 160. 



