660 



INDEX OF SUBJECTS. 



Cystoflagellata, 31; Insecta, 492; 

 Urochorda, 632 

 phragrnocone, 360 

 Phyllosoma, 421 

 Pilidium, 168 

 pimiules, 542 

 plasome, 43 

 plastic, 3 

 pleopod, 410 

 pleurobraucbia, 410 

 Pluteus, 570 

 pneumatophore, 91 

 podobranchia, 410 

 polar bodies, 46, 49 

 Polian vesicle, 536 

 polyp, 76, 78 

 polypide, 255 

 polymorpbism, Alcyonarise, 109; 



Insecta, 497, 500; Polyzoa, 262 



(see also division of labor) 

 polyspermy, 50 

 portal system, 612 

 proboscis, Acautbocephala, 180; 



Gasteropoda, 300; Myzostomese, 



244; Nemertina, 163 

 proglottid, 154 

 proostracou, 360 

 propodiura, 296 

 prosopyle, 71 

 prostomiuin, 218 

 prothorax, 488 

 protoplasm, 2 

 protopodite, 573 

 prototrocb, 213 

 Protozoin, 419 

 pseudofllaria, 25 

 pseudouavicella, 25 

 pseudopodium, 14 

 pteuoglossate dentition, 308 

 pupa, 500 



Rachiglossate dentition, 307 



radula, 279 



Redia, 149 



regeneration, 59 



reproduction, Flagellata, 31; Infuso- 

 ria, 36; Metazoa, 42; Myxosporidia, 

 27; Rhizopoda, 20; Sporozoa, 25 



reproduction, by budding, 22, 58, 

 71, 83, 96, 114, 215, 256, 266, 627; 

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

 division, 21, 36, 58, 114, 227; by 

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

 sexual, 44 



reproductive system, Acanthoceph- 

 ala, 181; Amphiueura, 287; An- 

 tbozoa, 105; Aracbnida, 441; Brach- 

 iopoda, 272; Cepualochorda, 617; 

 Cephalopoda, 354; Cestoda, 155; 

 Clisetoguatha, 188; Chaetopoda, 

 211, 223; Crustacea, 384; Cteno- 

 phora, 123; Dinophilux, 199; Echi- 

 uodera, 185; Echinodenna, 540; 

 Gasteropoda, 302, bi./.">, 311, 318; 

 Gastrotricha, 197; Gephyrca. ~40; 

 Hirudiuea, 235; Hydromedusoe, 83, 

 85, 86; Myzostomese, 246; Kema- 

 toda, 175, 179; Jmnertiua, 166; 

 Pelecypoda, 337; Peulastouiidne, 

 462; Platyheluiiuthes, 129; Poly- 

 zoa, 257, 260; Pterobrancbia, 600; 

 Pycnogonida, 466; Rotifcra, 193; 

 Scyphouiedusse, 98; Tracbeata, 474; 

 Trematoda, 146; Turbellaria, 133, 

 134, 135, 137, 139; Urochorda, 623; 

 Xipbosura, 432 



ropugnatorial glands, 483 



respiratory system. Annelida, 204; 

 Arachnida, 436; Asteroidea, 554; 

 Cephalochorda, 612; Cephalopoda, 

 343; Crustacea, 375; Echiuoidea, 

 576; Enteropneusta, 601; Gaster- 

 opoda, 297, 317; Mollusca, 278; 

 Pelecypoda, 329; Pterobrauchia, 

 599, 600; Trnolieata, 470; Uro- 

 chorda, 622; XiphoMira, 429 



respiratory trees, 240, 588 



Rhabditis, 131 



rhipidoglossate dentition, 306 



rostellum, 154 



Sacculi, 548 



salivary glands, 280, 493 



scapbognathite, 410 



scbizocoel, 57 



scolex, 153 



