656 



INDEX 



Perkins, 232 n. , 290 



Peronella, 5Jfi 



Peronium, 295 



Perrier, on classification of Asteroiclea, 

 461 



Persian Tick, 121 



Petal, of Echinarachnius parma, 545 ; of 

 Fibularidae, 549 ; of Echinanthidae, 

 549 ; of Echinocardiurn cordatum, 551 



Petalocrinus, 595 



Petasidae, 294 



Petasus, 294 



Peters, 414 n. 



Petrostroma, 193 ; P. schulzei, 193 



PfeifFer, on Sporozoa, 94 



Phacella, 314 



Phacotus, 111 ; shell, 113 



Phaeoconchia, 79, 85 



Phaeocystina, 79, 82, 87 



Phaeodaria (Cannopylaea, Tripylaea), 76, 

 79 ; skeleton, 82, 84, 85 ; central cap- 

 sule, 82, 84 ; fission, 85 



Phaeodium, 76, 81, 82 



Phaeogromia, 79 



Phaeosphaeria, 79 



Phakellia, 224 



Phalangopora, 284, 286 



Phalansteridae, 111 



Phalansterium, 113 



Phanerocodonic, 253, 265 



Phanerozonate, 454 



Pharetronidae, 192 



Pharyngella, 79, 85 



Pharynx, of Stylonychia mytilus, 139 ; of 

 Ciliata, 145 ; of Gymnostoraaceae, 145 ; 

 of Paramecium caudatum, 151 ; of 

 Caenomorpha uniserialis, 155 ; of Peri- 

 trichaceae, 145 ; of Oarchesium poly- 

 pinum, 146 f. ; of Vorticella, 156, 157 



Pharynx-tube of Euglenaceae, 124 f. see 

 also Flagellar Pit 



Pheronema, 204 > P- carpenteri, 204, 205, 

 221 



Phialidium temporarium, 281 



Pholidaster, 4^4 



Phoriospongia, 220 



Phosphorescence, of Dinoflagellata, 132 ; of 

 Cystoflagellata, 132, 134 ; of Noctiluca, 

 132, 134 ; of Scyphozoa, 311 ; of 

 Alcyonaria, 338 ; of Pennatulids, 361 ; 

 of Ctenophores, 414 



Phosphorescent oil-drops in Radiolaria, 80 



Photopathy, 21 



Phototaxy, 21 ; of Euglena, 125 



Phycochromaceae, 39 



Phycomycetes Zoosporeae related to Flagel- 

 lata, 109 



Phycomycetous Fungi, relations of, 48 



Phylactocarp, 276 



Phyllactidae, 382 



Phyllangia, 400 ; P. americana, 374 



Phyllode, 553 



Phyllograptus, 282 



Phyllophorus, 573 ; P. rugosus, 567 ; P. 

 urna, 574 



Physalia, 300, 302, 304, 308 



Physiological contrast of Animals and 

 Plants, 38 



Physiology, of cell and protoplasm, 3 f. ; 

 of Sponges, 234 f. ; of nervous system of 

 Echinoidea, 519 f. 



Physonectidae, 301, 307 



Physophora, 301, 308 ; P. borealis, 304 



Physophorae, 307 



Physophorinae, 308 



Pigment, of Stentor, 154 ; of Sponges, 169, 

 238 ; -granules, of Phaeodaria, 76, 80 f. 



Pinacocyte, 170, 213, 237 



Pincer-shaped pedicellariae, 456 



Pineau, on spontaneous generation, 43 



Pinnule, of Antedon rosacea, 581, 583 ; of 

 A. eschrichtii, 594 ; of Hyocrinus, 590 ; 

 of Metacrinus, 592 ; of fossil Crinoidea, 

 595 



Pinulus (a pentactine triaxon in which the 

 unpaired actine bears lateral spines and 

 projects beyond the bounding surface), 

 204 



Piroplasma, 120 f. 



Placosmilia, 401 



Placospongia, spicules of, 233 



Plakina, 212, 213 ; P. monolopha, S 

 212, 213 



Plankton, Protozoa of, 48 ; Foraminifera of, 

 61 ; Radiolaria of, 75 



Planorbulina, 59, 63 



Plant(s), definition, 39 ; Animals and, dis- 

 cussion on, 35 f . ; Higher, movements 

 of, 38 ; insectivorous, 38 ; -Protists, rela- 

 tions of, 48 ; -cells, wall of, 37 ; proto- 

 plasmic connexions of, 37 see also 

 Metaphytes 



Planula, 341 



Plasmodiophora, 89 



Plasmodium, 30 ; rheotaxy, 21 ; of Myxo- 

 mycetes, 50, 90 f. ; of Proteomyxa, 88 ; 

 of Didymium, 92 



Plasmodium., a generic name given to 

 Acystosporid Coccidiaceae producing 

 malarial fever, 103 f. see Haemamoeba, 

 Laverania 



Plastid, 21, 36 f. ; of Paidinella, 54 n. 

 of Flagellates, 110, 112 f. ; of Trachelo 

 monas, 112 see also Chloroplasts 

 Chromatophore, Chromoplastid 



Plastogamy, 30, 34 n. ; of Rhizopods, 56 

 of Foraminifera, Discorbina and Patel- 

 lina, 69 ; temporary, in Actinophrys sol, 

 72 ; of Myxomycetes, 90 f. 



Plastron, of Echinocardiurn cordatum, 550 ; 

 of Sternata, 554 



Plate, on Dendrocometes, 162 



Plates, siliceous, of shell of Rhizopods, 29, 

 53 f. ; ctenophoral, 141, 412 f. 







