961 



Pisocrinus 428. 



Placenta (Tuuic.) 122. 



Placentalia 186. 



Plaeina 392, 894. 



Placifiastrella 392. 



Placopegma 45 1 . 



Placophora 153, 212, 573. 



Placopsilina 525. 



Placortis 392. 



Plagiolepis 113. 



Plagiotata 586. 



Planar iae 755. 



Planispira 552. 



Plankton 19, 202, 204, 225, 314, 315, 445, 



447, 462, 7C.4, 839, 915. 

 Planktoplana 839. 

 Planocera 585, 839. 

 Planoceridae 586. 

 Planorbis 116, 215, 286, 551, 598, 770. 

 Planorbulina 391, 525, 718. 

 Plasmodien (Vaccine, Variola) 225. 

 Plasmodium 22(5. 

 Plasmopora 488, 557, 643. 

 Plastogamie 350, 449, 684. 

 PI ateosaur id ae 476. 

 Plathelminthes Syst. 9, 



64, 100, 142, 143, 207, 



229, 231, 232, 317, 430, 



585, 652, 720, 802, 804, 

 872, Faun. 7, II, 105, 

 555, 588, 721, 791, 803, 



10, 11, 60, 61, 

 217, 226, 228, 

 489, 524, 526, 

 839, 

 205, 

 841, 



841, 

 317, 



527, 



842, 



352 



Biol. 7, 10, 11, 104, 227, 228, 233, 276, 



317, 318, 352, 489, 526, 527, 569, 570, 



571, 641, 642, 651, 652, 715, 719, 770, 



802, 839, 842, Paras. 228, Morph. 9, 



10, 60, 61, 63, 64, 93, 95, 205, 230, 233, 



317, 318, 353, 429, 431, 458, 459, 489, 



526, 570, 571, 572, 586, 652,653, 721, 754, 



770, 803, 839, 842, Intgmt. 8, 9, 10,93, 



205, 319, 400, 430, 648, 650, 770, - 

 Nerv.Syst. 8, 9, 96, 231, 279, 320, 353, 

 400, 650, 719, 770, 841, 843, 874, 

 Sinn.Org. 9, 98, 400, 586, 770, 840, - 

 Muskl. 9, 94, 205, 229, 230, 319, 400, 

 430, 458, 528, 770, 841, Blutgef. 

 95, - - Ernahr.App. 9, 94, 158, 229, 230, 



319, 353, 586, 770, 840, - - Gefasssyst. 9, 



206, 459, -- Excr.App. 61, 96, 320, 353, 

 400, 650, 651, 754, 770, 805, Geuit. 

 9, 10, 62, 63, 99, 205, 229, 231, 233, 

 321, 353, 431, 459, 569, 571, 58o, 754, 

 770, 803, 840, Driisen 9, 158, 230, 



320, 651, Histol. 8, 9, 93, 2(5, 399, 

 649, 650, 769, 843, - - Physiol. 99, 353, 

 523, - - Entwickl. 60, 62, 99, 276, 359, 

 458, 489, 527, 570, 650, 719, 720, 803, 

 842, Phylog. 103, 142, 143, 803. 



Platyarthrus 901. 

 Platycrinidae 428, 568, 613. 

 Platycrinus 428, 568, 613. 

 Platydactylus 168. 

 Platyonychidae 868. 

 Platy rrhin i 37. 



Platythrips 846. 

 Platyzosteria 240. 

 Plectopteridae 596. 

 Pleorchis 524. 

 Pies ios auria 407, 536. 

 Plesiosauridae 540. 

 Plesiosaurvs 538, 407. 

 Plethopora 901. 

 Pleuracanthi dae 851. 

 Pleuraldriiscn (Myriop.) 280. 

 Pleurobranchioidea 472. 

 PI euroc oel i da e 478. 

 Plenrocoelits 478. 

 Pleurocoptes 642. 

 Pleurocystida 455. 

 Pleurocystis 455. 

 Pleurocystites 457. 

 Pleurodictyum 558. 

 Pleiirogenes 536. 

 Pleurouemina 642. 

 P 1 e u r opter ygi i 851. 

 Pleurotoma 212, 555. 

 Plcxrotomaria 24, 163. 

 Pleurotomella 555. 

 Pleurotouiidae 213. 

 Pleuroxus 323, 610. 

 Pliosauria 538. 

 Plio saur i dae 540. 

 Pliosaurus 539. 

 Ploceus 4. 

 Plumatella 146. 

 Plumicom (8pong.j 453. 

 Plumohalichondria 167. 

 Plwmulana 141, 691. 

 P 1 um ular i id ae 141. 

 Plusia 239. 

 Pluteus 566. 

 Plutonaster 426, 427. 

 Pluvianus 919. 

 Pneumostotn (Gastr.) 599. 

 Podalirius 282. 

 Podascon 864. 

 Podasconidae 863. 

 Podocyste 289. 

 Podon 324. 

 Podophrya 642. 

 Podophtkalmidae 866. 

 Poecilasma 12. 

 Poecillastra 394. 

 Poecilodryas 664. 

 Poecilopleurum 476. 

 Poecilothrips 846. 

 Polacanthus 479. 



Polarmeere, Faunist. 585, 804. 

 Poliopsis 101, 805. 

 Poli'sche Blase (Holothur.) 564. 

 Polkorpei-chen 310, 390. 

 Pollenia 173. 



Pollenrautterzellen, Nucleolus 311. 

 Polplatten (Helioz.) 309, 449. 

 Polstrahlungen 46, 87, 197, 263. 

 Polybiidae 866. 

 Polybostrichus 279. 



