INDEX 



717 



Protaspis larva, 324, 325 



Proteolepas, 382 



Protephemeroptera, 462 



Protobranchiata, 582; 574, 579 



Protocerebrum, 309, 340 



Protochordata, 660 



Protoclypeastroida, 647 



Protococcaceae, 47 



Protocdnch, 602 



Protodonata, 462 



Protodrilus, 295 ; 294 ; chaetifer, 295 



Protohymenoptera, 462 



Protomerite, 95 



Protomonadina, 63 



Protoparce, 437 



Protoplasm of Protozoa, 1 1 



Protopod stages (oligomero, poly- 

 mero), 458, 458 



Protopodite, 324, 335, 336, 372, 379 



Prototroch, of Cyphonautes, 611; of 

 Pilidium, 235 ; of trochosphere, 282 



Protozoa, 7 ; i, 126 



Protozoa and Metazoa, Connection 

 bet\Aeen, 45 



Protura, 465 



Proventriculus, of Carcinus, 412; of 

 Crustacea, 344 ; of Earthworms, 

 see Gizzard; of Insecta, 432; of 

 Ganimarus, 401 ; of Ligia, 397 



Pseudococcus, 478 



Pseudocolonies of Protozoa, 1 1 



Pseudonavicellae, 95 



Pseudophyllidea, 229 



Pseudopodia, 14; of Amoebina, 68, 

 69; of Foraminifera, 72, 74; of 

 Heliozoa, 83; of Hydra, 147; of 

 Mastigamoeba, 60; of Mycetozoa, 

 86 ; of Radiolaria, 76, 80 



Pseudopodiospores, see Amoebulae 



Pseudotracheae, 506 



Pseudolransverse fission, 29 ; 29, 45 



Pseudovelum, 176 



Psocoptera, 471 



Pterobranchia, 662 



Pteropoda, 569 



Pterostichus, 457, 499 



Pterotrachea, 566; 563, 566 



Pterygota, 466 



Pterygotus, 526; 525; osiliensis, 525 



Ptilinum, 509, 511 



Ptychomyia remota, 512 



Pulex irritans, 513; 514 



Pulmonata, 569; 554 



Pulvillus, 428 



Pupa, 456; 490, 508, 509, 511, 513 

 "Pupa", of Holothuroidea, 633; of 



Lernea, 375 

 Pupae, Coarctate, Exarate and Ob- 



tect, 456 : 509 

 Puparium, 456, 508, 509, 511 

 Pure lines, 36 

 Purpura, 563 

 Pycnogonum littorale, 539 

 Pygidium, 323 

 Pyloric caeca, of Asteroidea, 636 ; of 



Insecta, 434 

 Pyloric chamber, 344; sac, 636 

 Pyralidae, 491 

 Pyrameis, 450 

 Pyrenoids, 47; 56, 57 

 Pyriform organ, 611 

 Pyrosoma, 685 ; 682, 682, 683 

 Pyrosomatida, 685; 681, 682 

 Pyrrhocoridae, 476 



Quadrant, 281 

 Quartan ague, 93 

 Quartettes, 281 



Rachiglossa, 563 



Radial " blood vessel ", 629, 637, 645, 

 650, 658 ; nerve (aboral), 656 ; nerve , 

 (ectoneural), 630, 637, 645, 646; 

 ossicles, 656; perihaemal vessel, 

 626, 637, 638, 645, 656; water 

 vessel, see Water vascular system 



Radial cleavage, 283; 145, 631 



Radial fission, 29; 29, 58 



Radial symmetry, 633 ; 143 ; of Acti- 

 nozoa, 182; of Cnidaria, 151; of • 

 Echinodermata, 623, 633 



Radii of Echinodermata, 623 ; 646, 

 649 



Radiolaria, 76; 41, 43 



Radula, 557; 544, 550, 565, 567, 569, 

 570, 572, 595; sac, 557 



Receptaculum seminis, see Sper- 

 matheca 



Receptors, 137 



Rectal caeca, 636 



Rectum, see Alimentary canal 



Reduction division, 27, 37, 88 



Reduvidae, 476 



Reflex arc, 137 



Reflexes, in Metazoa, 137; in Pro- 

 tozoa, 38 



Regeneration, in Crustacea, 339; in 

 Turbellaria, 213 



