INDEX 



807 



Palinurus, 555, 572, 580, 585, 587 



Pallial complex, 715 



Pallial groove, 338 



Pallial line, 666* 



Pallial muscles, 667 



Pallial sinus, 358 



Pallium -See Mantle 



Palpi, 461 



Paludicella, 340, 346 



Paludina, 734 



Pali, 202* 



Palythoa, 127, 195 



Pancreas, 35* 



Pancreatic juice, 35* 



Pandorina, 74, 75, 76, 77 



Papillae, 415* 



Paragastric cavity, 107*, 109 



Paragnatha, 517*, 535 



Paramithrax, 586 



Par amoeba, 51 



Paramcecidce, 93 



PARAM.JECIUM, 90, 91, 92, 93 : Syste- 

 matic position, 93 



Paramc&cium caudatum, 91, 92, 93 



Paramylum, 70* 



Paranaspides, 553, 567 



Paranephrops, 555 



Parapodium, 429, 430, 431, 458, 720 



Paraseison asplanchnus, 322 



Parasitism, of Amoeba, 51 : Protozoa, 

 74, 83, 84, 86, 89, 97 : Ciliata, 101 : 

 Hydrozoa, 166 : Mesozoa, 227 : 

 Rotifera, 328 



Parazoa, 106 



Parenchyma, 233*, 259, 260, 301, 344 



Parenchyma muscle, 260 



Parenchymula, 123* 



Parthenogenesis, 21*, 41*, 282, 632 



Parthenogonidia, 78* 



Parthenope, 576 



Patella, 717, 723, 725, 726, 727, 729, 

 731, 732, 733, 734 



Patellidce, 713 



Pauropoda, 598*, 601 



Pauropus, 598, 600 



Paxillge, 405 



Paxillosa, 402, 410 



Peachia, 200, 206 



Pea-crab, 586 



Pearl -mussel, 692 



Pearl-oyster, 678 



Pearls, 692 



Pebrine, 90* 



Pecten, 678, 679, 682, 689, 690, 692 



Pectines, 640* 



Pectinibrancbia, 714*, 724 



Pedal gland, 706*, 720 



Pedal lobes, 178 



Pedal tentacles, 720 



Pedalion, 322, 323, 325, 328 



Pedata, 404*, 425 



Pedicellarise, 370, 374, 380, 387, 408 



Pedicellina, 341, 347 



Pedipalpi, 638, 647, 648 



Pedipalpida, 645*, 647, 648, 652, 653, 

 656 



Peduncle, 202* 



Pelagia, 182, 183 



Pelagic species, 8* 



Pelage-hydra, 149 



Pelaqothuria, 414 



Pelecypoda, 663 : Example, 663 : Dis- 

 tinctive characters and classification, 

 676* : General organisation, 679 : 

 Adductor muscles, 679 : Shell, 680 : 

 Siphons, 680 : Foot, 683 : Byssus 

 gland, 685 : Gills, 685, 686, 687 : 

 Digestive organs, 687 : Excretory 

 organs, 688 : Circiilatory organs, 

 688 : Nervous system, 688, 689 : 

 Sense organs, 689 : Reproduction 

 and development, 690, 691, 692 : 

 General remarks, 692 : Mutual rela- 

 tionship, 693 



Pellicle, 90 



Pelmatozoa, 404*, 425 



Pelomyxa, 49 



Peltogaster, 552, 565 



Pen, 772* 



Penceus, 555, 584 



Penial setae, 293, 299 



Pznnatula, 194, 195, 197, 202, 205 



Pennatulacea, 194*, 195, 197, 202 



Pentacerns, 420 



Pentacrinoid larva, 401*, 424 



Pentacrinus, 401 



Pentastomida See Linguatulida 



Pentastomum tcenioides, 658 



Peptonephridia, 469* 



Peptones, 35 



Peracarida, 553*, 586 



Perforate corals, 205* 



Pericardial sinus, 521* 



Perichondrium, 28* 



Pericolpa, 178, 179 



Perihsemal system, 372* 



Periosteum, 29* 



Periostracum, 666* 



PERIPATUS, 514, 591 : External fea- 

 tures, 591, 592 : Body-wall and 

 body-cavity, 592 : Enteric canal, 

 592, 593 : Circulatory system, 592 : 

 Organs of respiration, 593 : Coxal 

 and slime glands, 593, 594 : Nervous 

 system, 594 : Nephridia, 594 : Re- 

 productive organs, 594 : Develop- 

 ment, 595, 596, 597 : Distribution, 

 597 : Relationships, 597 



Peripatus capensis, 591, 592, 593, 594, 

 596, 597 



Peripatus novos-zealandios, 595 



Periphylla, 178 



PEREPLANETA AMERICANA, 603, 604 : 

 Head, 603, 604 : Neck, 605 : Thorax, 

 606 : Abdomen, 606 : Respiratory 

 movements, 607 : Muscles, 607 : 



