558 



COMPARATIVE ANATOMY 



Pedicididm, 4^0 



Pedipalpi, 509 



Pedipalps (Araolin. ), 515 



Pedunculata, S9S 



Pegantha, 69 



Pelagia noctiluca, 73 



Peltogaster, 29,3 



Penaeus, 298 ; posterior maxillae of larva, 



313 ; older larvffi, 392 

 Penella, 291 

 Pennatula, 70 

 Pentamera, 44^ 

 Pentastoviidce, 510 

 Peiitastomum, 510 



,, denticulatum, 511 



, , tcenioides, 510 ; nervous sys- 



tem, 520 ; sexual organs, 

 533, 534, 537 

 Pentatoma, 440 ; mouth parts, 451 

 Perforata, 4 

 Perichceta, 181 



„ mirahilis, 240 



Pericolpa, 72 

 Peridinium, 8 

 Peripatus, 4^7 



capensis, 437 ; anatomy, 430 ; 

 anterior body, 429 



,, Edwardsii, 437 ; embryo, 436 ; 

 head, 427 ; nephridia, 431 ; 

 section of segment, 428 ; 

 sexual organs, 436 



,, Leuckartii, 437 



, , Novce Zecdandice, 437, 427 

 PeriphyUa, 72 

 Periplanala, 439 

 Peripneustio tracheal system, 482 

 Peritricha, 11 

 Perlaria, 440 

 Peromediisce, 71 

 Peronia,' 69 

 Perradii, 74 

 Phacelli, 78, 85 

 Phacops, 415 

 Phmodaria, 7 

 Phseodium, 7 

 Phagocytes, 500 

 Pho-lmvjidm, 509 ; heart, 527 

 Phalangium opilio, sexual organs, 533, 534 

 Pludansterium, 8 

 Phascolion, 244 

 Phascolosovia, 183 

 Phasmidce, 439 

 Phudidium variabile, 68 

 Philodromus, 510 



PMloioa domestica, sexual organs, 534 

 PhilopUrus, 440 

 Pholcus, 510 



,, phalangoides, heart, 527 

 Phoronidce, 183 

 Phoronis, 183 ; larva, 272 

 Phoxichilidimn, 424 

 Phractaspis, 6 



,, prototypus, 6 



Phreatothrix, 240 

 Pkreoryctidm, 181 

 Phronima, 296 

 Phryganea, 441 

 Phrynus, 509 

 Phthirius, 440 

 Phylactolcemaia, 184 



Phyllacanthidce, water- vascular system, 153 

 Phyllium, 439 

 Phyllobothrium, 134 

 Phyllobranchise, 328 

 Phyllodoeidce, 182 

 Phyllopoda, 288 

 Phyllosoma larva, 395 

 ' Phylloxera, 440 

 Physalia, 70 

 Physemaria, 58 

 Physonecta, 70 

 Physophora, 70 

 Physopoda, 44^ 

 Phytonietridce, 44^ 

 PhytopihtMres, 440 

 Phytoptidce, 510 

 Pilema, 72 



Pilidium larva, 274, 275 

 Pilumnus, 300 

 Pinnoteres, 300 

 Pisa, 299 

 Piscicola, 240 

 Plagiosloma, 134 

 Plakina, 61 



Planaria, 133 ; ovary, 29 

 Planocera, 133 ; pharynx, 139 ; intestinal 



and nervous system, 141 

 Planula, 129, 130 

 Platodes, 133-172 

 Platycleis, 439 

 Platyscelus, 296 

 Plecoptera, 440 

 Pleon, 301 

 Pleopoda, 315, 322 

 Pleura, 414 



Pleurobranchiee, 328, 327 

 Pleurochmta, 181 

 Plumatella, 184 



,, repens, 208 



Plumularia, 68 

 Plusiada, 443 

 Pneumatophore, 70, 108 

 Podobranchiffi, 328, 327 

 Podoconus, 7 

 Podocoryne carnea, 68 

 Podophrya, 11 



,, gemmi^jara, 11 



Podophthalmata, 296 

 Podura, 439 

 Pmcilopoda, 417 

 Polar bodies, 31 

 Polia, 178 

 PolUcipes, 292 

 Polyehmta,, 181 

 Polycladidai, 133 

 Polycystidce, 9 



