660 



INDEX OF SUBJECTS. 



Cystoflagellata, 31; Insecta, 493; 



TJiochoida, 633 

 phiagmocone, 360 

 Phyllosoma, 431 

 Pilidium, 168 

 pinnules, 543 

 plasome, 48 

 plastin, 3 

 pleopod, 410 

 pleurobianchia, 410 

 Pluieus, 570 

 pneumatophore, 91 

 podobranchia, 410 

 polar bodies, 46, 49 

 Polian vesicle, 536 

 polyp, 76, 78 

 polypide, 355 

 polymoiphism, — Alcyonariae, 109; 



Insecta, 497, 500; Polyzoa, 263 



(see also division of labor) 

 polyspermy, 50 

 portal system, 612 

 proboscis, — Acanthocephala, 180; 



Gasteropoda, 300; Myzostomese, 



244; Nemertina, 163 

 proglottid, 154 

 proOstracon, 360 

 propodium, 396 

 prosopyle, 71 

 prostomium, 318 

 prothorax, 488 

 protoplasm, 3 

 protopodite, 573 

 prototroch, 213 

 ProtozoSit, 419 

 pseudofilaria, 36 

 pseudonavicella, 35 

 pseudopodium, 14 

 ptenoglossate dentition, 308 

 pupa, 500 



Rachiglossate dentition, 307 



radula, 279 



Sedia, 149 



regeneration, 59 



reproduction, — Plagellata, 31; Infuso- 

 ria, 36; Metazoa, 42; Myxosporidia, 

 27; Rhizopoda, 20; Sporozoa, 25 



reproduction,— by budding, 33, 58, 

 71, 83, 96, 114, 315, 256, 366, 637; 

 by conjugation, 24, 25, 31, 37; by 

 division, 21, 36, 58, 114, 237; by 

 spore - formation, 22, 25, 31, 36; 

 sexual, 44 



reproductive system, — Acanthoceph- 

 ala, 181; Amphineura, 287; An- 

 thozoa, 105; Arachnida, 441; Brach- 

 iopoda, 273; Cephalochorda, 617; 

 Cephalopoda, 354; Cestoda, 155; 

 Chsetognatha, 188; Chsetopoda, 

 211, 333; Crustacea, 384; Cteno- 

 pbora, 133; Dinophilus, 199; Echi- 

 nodera, 185; Echinoderma, 540: 

 Gasteropoda, 303, buo, 311, 318 

 Gaslrotricha, 197; Gephyrca, 3i0 

 Hirudinea, 235; Hydromedusse, 83, 

 85, 86; Myzostomeae, 346; Nema- 

 toda, 175, 179; Memenina, 166 

 Pelecypoda, 337; PeuLastomidae, 

 463; Platyhelminthes, 139; Poly 

 zoa, 257, 360; Pterobrauchia, 600 

 Pycnogonida, 466; Rotifera, 193 

 ScyphomedussB, 98; Tracheata, 474 

 Trematoda, 146; Turbellaria, 133, 

 134, 135, 137, 139; Urochorda, 633 

 Xiphosura, 432 



repugnatorial glands, 483 



respiratory system. — Annelida, 304; 

 Arachnida, 436; Asteroidea, 554; 

 Cephalochorda, 613; Cephalopoda, 

 343; Crustacea, 375; Ecbinoidea, 

 576; Enteropneusta, 601; Gaster- 

 opoda, 397, 317; Mollusca, 378; 

 Pelecypoda, 339; Pterobranchia, 

 599, 600; Ti-acbeata, 470; Uro- 

 chorda, 633; Xiphosura, 439 



respiratory trees. 240, 588 



Mhabditis, 131 



rhipidoglossate dentition, 306 



rostellum, 154 



Sacculi, 548 



salivary glands, 280, 493 



scapbognathite, 410 



schizoccEl, 57 



scolex, 153 



