190S.] 



NATURAL SCIENCES OF PHILADELPHIA. 



667 



Piaya mehleri 492, 494, 495, 499, 500 



melanogaster 496 



melanogastra 492, 495, 496 



mesurus 494 



mexicana 492, 494, 495 



mexicanus 494, 498 



minuta 495,496 



nigricrissa.... 493-495, 497, 499, 500 



pallescens 493-495,500 



rutila 496 



thermophila 499 



Pimephales notatus 523 



promelas 522 



Pionosvllis gigantea 325 



magnifica 325, 325, 326 



Pipa 125 



Pipilio erythrophthalmus 137, 154 



Piranga ervthromelas 133, 154 



Pirata, 160, 162, 163, 168, 169, 299, 299, 

 300, 301, 316 



agilis 165,307 



aspirans 165, 301, 303 



bilobata 165, 301, 315 



elegans 165,307 



exigua 165,303 



febriculosa 165, 301, 311 



humicolus 165, 301, 305, 306 



insularis 165, 301, 309, 311 



liber 165,311 



marxi 165, 301, 307, 309 



minuta 165, 305 



minutus 165, 301, 303 



montanoides 165 



montamis 165, 301, 306, 307 



nigromaculatus 165, 307 



piratica 165, 309, 313 



p. utahensis 301, 313 



procursus 199 



prodigiosa 165, 301, 313, 315 



sedentarius 165,313 



wacondana 165 



Pisaurida^ 168,300 



Pisidium 31 



japonicum 35 



Pista cristata 351 



fasciata 351 



Pityophis 121 



Planorbis 412,413 



Platanista 25 



Plathemis subornata 475, 488, 489 



Plat\Tiereis agassizi 344 



megalops 344 



Platypeltis 115 



ferox 115 



Plat\T3lax 468 



Platythyra 114 



Plectotropis 41, 453 



brevibarbis 594 



Plestiodon 118,119 



Plethodon 126 



Plethodontidff 126 



Pleurococcus 425 



Pleurodelida^ 126 



Pluchea sericea 367 



Posecetes gramineus 154 



Podarke pugettensis 341 



Polinices 555 



aulacoglossa 558, 559 



didyma 556-558 



d. ampla 556, 557 



d. bicolor 557 



d. vesicalis 557 



papjTacea 558 



tasmanica 556 



Pollicipes 107 



Polycirrussp : 353 



PolVnoe fragilis 332 



■' piilchra 329 



tuta 331 



PoljTioida' 329 



Poroderma stellare 52 



Porrima 293 



Potamia S99 



Potamillareniformis 359 



Potamothemis 461 



Prionace glauca 62 



Prionotus 620 



Priscodelphinus granda;vus....24, 25, 28 



Pristiurus 53 



Progne subis 154 



Progomphus 466, 468, 474 



integer 466 



obscurus borealis 488 



pygmteas 490 



serenus 466 



Proscalpelluin 107, 107 



Proteidse 127 



Proteus 125 



Protoneura 462, 468, 474, 478, 487 



aniatoiia 480,489 



aurautiaea 489 



remissa 480 



Protula geniculata 361 



Pseudemys 114 



concinna 114 



Pseudobranchus 127 



Pseudoficimia 122 



pulchra 122 



Pseudoleon 461, 462, 468 



superbus 480, 481, 489 



Pseudopotamilla anoculata 359 



brevibranchiata 360 



debilis 360 



intermedia 359 



occelata 360 



reniformis 359 



splendida 359 



Pseudosermyle truncata 371 



Pseudostignia 461, 467, 468 



aberrans 489 



Pseudotriton marginatum 126 



