7H 



INDEX 



Pectines, 522, 525 



Pectinibranchiata, see Monotocardia 



Pedal cords, 545, 547, 565; sinus, 

 582 



Pedalion, 241 



Pedicellariae, 626; Crossed, 634; 

 Gemmiform, 641, 642; Ophioce- 

 phalous, 641, 642; of Asteroidea, 

 634; of Echinoidea, 641; Tridac- 

 tyle, 641, 642 ; Trifoliate, 641, 642 ; 

 Uncrossed, of Asteroidea, 634 



Pedicellina, 612 



Pediculus humanus, 484 ; 484 



Pedipalpi, 512 



Pedipalps, 515, 522, 524, 530, 532, 



533. 534, 539 



Peduncle, see Stalk 



Pelagia, 180 



Pelagothuria, 652; 653 



Pelagothurida, 652 



Pellicle, 12; 49, 105, 106 



Pelmatozoa, 658; 657 



Pelomyxa, 72 ; palustris, 71 



Pen of Loligo, 601 



Penaeidea, 404 



Penaeus, 335, 349, 353. 4i 5 



Penilia, 363 



Penis, see Generative organs 



Pennaria, 164; 163 



Pennatula, 184 



Pennatulacea, 184 



Pentacrinus, 658 



Pentastoinida, 541 ; 539 



Pentatoniidae, 476 



Pentremites, 659 



Peptonephridia, 291 



Peracarida, 393 ; 336, 389 



Pera?teina, 52; 12, 20, 22, 46; tri- 

 chophoruni, 53 



Perforate F'oraminifera, 75 



Peribranchial cavities, 673 



Pericardial sinus, see Pericardium 



Pericardium, of Arthropoda, 314; of 

 Cephalopoda, 593 ; of Ciona, 674, 

 677 ; of Crustacea, 348 ; of Entero- 

 pneusta, 667 ; of Insecta, 437 ; of 

 Mollusca, 543 ; of Snail. 556 



Perichaetine, 289 



Perihaemal coelom of Enteropneusta, 

 663 ; system of Echinodermata*, 

 626; 637, 638, 645, 656 



Periostracum, of Brachiopoda, 615; 

 of Mollusca, 546 



Peripatus, 317; 130 n., 141, 305, 312, 



316, 319, 539; capensis, 318, 319, 

 321, 322 



Peripharyngeal band, 669 



Periplaneta, 466 



Peripneustic larva, 508 



Periproct, 640 



Peripsocus phaepterus, 472 



Peripylaea, 80 



Perisarc, 155 



Perisomatic cavity, 384 



Peristome, of Ciliata, 104; of Echi- 

 noidea, 640 



Peristomial cirri, 266 



Peristomium, 266 ; 268, 272 



Peritoneum, 131, 136, 262, 278 



Peritricha, iii; 104 



Peritrophic membrane, of Crustacea, 

 345; of Insecta, 434; of Onycho- 

 phoia, 320 



Perivisceral cavity, 134, 141; of 

 Acanthobdella, 300 ; of Arthropoda, 

 314; of Chaetopoda, 261 ; of Ciona^ 

 674; of Echinodermata, 626; of 

 Mollusca, 543; of Rotifera, 237. 

 See also Coelom, Haemocoele 



Per la maxima, 471 



Pernicious malaria, 93 



Perophora, 681 ; 677, 679, 681 



Perradial, 174 



Petrobius maritimus, 464 



Phaenoserphus , 459, 502 ; viator, 499 



Phaeococcus, 52 



Phaeodaria, see Tripylaea 



Phaeodium, 83 



Phalangida, 537 



Phalera bucephala, 441 



Pharj'nx, see Alimentary canal 



Phascolosoma, 304 



Pheretima, 290 



Philodinidae, 241 



Philonexis. 599 



Phlebotomus, 64 



Phobotaxis, 38 



Pholas, 586 



Phoronidea, 622 



Phoronis, 622; 621 



Phorozooids, 686 



Phosphagen, 662 and n. 



Phosphorescent Protozoa, 20 



Photogenic organs of Insecta, 439 



Photosynthesis, see Holophytic nu- 

 trition 



Phoxicfiilidiuni femoratum ,539 



Phragmocone, 600 



