558 



COMPARATIVE ANATOMY 



Pediculidce, 440 



Pedipcdpi, 509 



Pedipalps (Arachu. ), 515 



Pedunculata, 292 



Pegantha, 69 



Pelagia noctiluca, 72 



Peltogaster, 292 



Penaeus, 298 ; posterior maxilla of larva, 



313 ; older larvee, 392 

 Penella, 291 

 Pennatula, 70 

 Pentamera, 441 

 Pentastomidce, 510 

 Pentastomum, 510 



,, denticulatum, 511 



,, tcenioides, 510 ; nervous sys- 



tem, 520 ; sexual organs, 

 533, 534, 537 



Pentatoma, 440 ; mouth parts, 451 

 Perfomta, 4 

 Perichceta, 181 



mirabilis, 240 

 Pericolpa, 72 

 Peridinium, 8 

 Peripatus, 437 



, , capensis, 437 ; anatomy, 430 ; 

 anterior body, 429 



, , Ediuardsii, 437 ; embryo, 435 ; 

 head, 427 ; uephriclia, 431 ; 

 section of segment, 428 ; 

 sexual organs, 436 



,, Leuckartii, 437 



, , Novoe Zecdandice, 437, 427 

 Periphylla, 72 

 Periplanata, 439 

 Peripueustic tracheal system, 482 

 PeritricJia, 11 

 Perlaria, 440 

 PeromeduscE, 71 

 Peronia, 69 

 Perradii, 74 

 Phacelli, 78, 85 

 Phacops, 415 

 Phwodaria, 7 

 Phajodium, 7 

 Phagocytes, 500 

 Phcdangidce, 509 ; heart, 527 

 Phalangium opilio, sexual organs, 533, 534 

 Phalansterium, 8 

 Phascolion, 244 

 Phascolosoma, 1S3 

 Phasmidce, 439 

 Phialidium variabile, 68 

 Philodromus, 510 



Philoica domestica, sexual organs, 534 

 Philopterus, 440 

 Pholcus, 510 



,, phcdang aides, heart, 527 

 Phoronidcc, 183 

 Phoronis, 183 ; larva, 272 

 Ph o.i: ith il ii I'm m, 4~ '4 

 Phractaspis, 6 



,, prototypus, 6 



Phreatothrix, 240 



Phreoryctidce, 181 



Phronima, 296 



Phryganea, 441 



Phrynus, 509 



Phthirius, 440 



Phylactolcemata, IS 4 



Phi/llacanthidce, water-vascular system, 153 



Phyllium, 439 



Phyllobothrium, 134 



Phyllobranchiae, 328 



Phyllodocidce, 182 



Phyllopoda, 288 



Phyllosoma larva, 395 



Phylloxera, 440 



Physalia, 70 



Physemaria, 58 



Physonecta, 70 



Physophora, 70 



Physopoda, 440 



Phytometridce, 44 



Phytophihires, 440 



Phytoptidce, 510 



Pilema, 72 



Pilidium larva, 274, 275 



Pilumnus, 300 



Pinnoteres, 300 



Pisa, 299 



Piscicola, 240 



Plagiostoma, 134 



Plakina, 61 



Planaria, 133 ; ovary, 29 



Planocera, 133 ; pharynx, 139 ; intestinal 



and nervous system, 141 

 Planula, 129, 130 

 Platodes, 133-172 

 Platydeis, 439 

 Platyscelus, 296 

 Plecoptera, 440 

 Pleou, 301 

 Pleopoda, 315, 322 

 Pleura, 414 



Pleurobrauchise, 328, 327 

 Pleurochceta, 181 

 Plumatella, 184 



,, repens, 208 

 Plumularia, 68 

 Plusiada, 442 

 Pneumatophore, 70, 108 

 Podobranchiie, 328, 327 

 Podoconus, 7 

 Podocoryne carnea, 68 

 Podophrya, 11 



,, gemmipara, 11 

 Podophthalmata, 296 

 Podura, 439 

 P/xcilopoda, 417 

 Polar bodies, 31 

 Polia, 178 

 Pollicipes, 292 

 Polychceta, 181 

 Polydadidce, 133 

 Polycystidce, 9 





