INDEX. 



689 



Parasitism, 167 



Parasphenoid bone, 523 



Parasuchia, 602 



Paraxon gland, 331 



Parietal bone, 523 



Parietal foramen, 590 



Parietal ganglia, 354 



Parietal organ, 535 



Parostoses, 519 



Parotid gland, 584 



Parrots, 616 



Parthenogenesis, 142, 145, 472 



Partial cleavage, 152, 153 



Partridge, 614 



Parypha, 241 



Passer, 616 



Passeres, 616 



Patagium, 637 



Patellidae, 378 



Pathetic nerve, 536 



Paunch, 641 



Pauropida, 497 



Pauropus, 497 



Pearl organs, 558 



Pearl oysters, 367 



Pearls, 361 



Pearls, artificial, 558 



Pebrine, 218 



Peccaries, 641 



Pecora, 641 



Pecten, 366 



Pecten of eye, 611 



Pectinatella, 324 



Pectines, 447 



Pectinibranchia, 379 



Peclinidse, 367 



Pectoral fin, 562 



Pectoral girdle, 527 



Pedal cords, 354 



Pedal ganglia. 353 



Pedata, 349 



Pedes spurii, 475 



Pedicellina, 322, 330 



Pediculati, 575 



Pediculus, 491 



Pedipalpi, 448 



Pedipalpus, 445 



Pelagia, 246. 250 



Pelecanus, 615 



Pelecypoda, 358 



Pelicans. 615 



Pelmatozoa, 338 



Pelobatidse, 588 



Pelomyxa, 189 



Peltogaster, 426 



Pelvic fin, 526, 562 



Pelvic girdle, 527 



Pen, 389 



Peneidse, 434 



Penella, 422 



Peneus, 434 



Penguin, 615 



Penis, 120 



Pennaria, 241 



Pennatula, 259 



Pennatulidae, 259 



Pentacrinus, 339, 342 



Pentacta, 349 



Pentadactyle appendage, 529 



Pentamera, 484 



Pentamerus, 328 



Pentastomum, 169, 445 



Pentatomidse, 489 



Pentatoma, 489 



Pentremites, 342 



Perameles, 633 



Peramelidse, 633 



Perca, 574, 577 



Perch, 577 



Percidae, 577 



Perdix, 614 



Pereiopoda, 401 



Perforata, 197, 198 



Peribranchial chamber, 503, 505 



Pericardial sinus, 470 



Pericardium, in, 546 



Perichaeta, 316 



Perichondrium, 86 



Pericolpa, 250 



Peridinium, 203 



Perilymph, 543 



Periosteum, 87 



Peripatidse, 456 



Peripatopsis, 458 



Peripatus, 456, 458 



Peripharyngeal band, 506 



