1921J 



NATURAL SCIENCES OF PHILADELPHIA. 



549 



Plagiaplite 170 



Plagioclase 172, 188, 191 



Plicatula gibbosa 413 



Plochelaea crassilabrum 341 



gabbi 342 



Plumasite 170, 182-189 



Plutella vanella 14 



Polinices mamillaris 386 



PoljTiiera conjinicta 66 



conjunctoides 66 



ciystalloptera 67 



hirticornis 66 



niveitarsis 67 



obscura 66 



parishi 66 



pleuralis 66 



superba 67 



thoracica 66 



Potamides caobassensis 374 



dentilabris 374 



gastrodon 374 



haitensis 373 



prismaticus 373 



suprasulcatus 373 



Psacaphora deceptella 5 



sexstrigella 5 



Psaronius brevitibia 65 



mancus 64 



' obscurus 63 



pallipes 63 



triangiiliferus 63 



pygmaeus 63 



Pseudischnoptera lineata 204 



rhabdota 278 



Pseudomops neglecta 278 



Pteria inornata 408 



Pteridomonas scherflfeli 105 



Pungitius pungitius 437 



Pustularia gabbiana 366 



Pycnoscelus surinamensis 241 



Pyramidella canaliculata 390 



forulata famelica 391 



(Longchaeus) jamaicensis 390 



(Triplychus) nivea 390 



Pyrite 186, 192 



Pyroxenite 182, 187, 191 



Pyrula carbasea 364 



pilsbryi 364 



Quartz 170, 172, 186-192 



Retusa biforis 311 



sulcata fossilis 311 



Rhamphidia albitarsis 56 



mirabilis 55 



miranda 54 



sanguinolenta 55 



uniformis 56 



Rhipidia (Arhipidia) annulicornis 54 



domestica amazonensis 54 



(Arhipidia) d. angustifrons.... 54 



(Rhipidia) perarmata 52 



(Conorhipidia) punctipennis .. 54 



Rhodolite 188, 192 



Rictaxis oryza 310 



Ringicula semihmata 313 



Rissoa epulata 384 



(Alvania) proavita 384 



Rissoina bryerea 384 



(Zebina) laevigata 382 



minuta 383 



Rooellaria sp 428 



Rutile 184, 185, 186, 192 



Salpingoeca lepidula 127 



polvgonatum 123 



Saxonite 184, 185, 187 



Schizopiha fissicoUis 208 



Schwalbea australis 528 



Sciablatta poecila 196 



Scobinella magnifica 325 



tristis 325 



Sconsia laevigata 361 



Scrophularia marilandica 499 



occidentalis 498 



Scythris eboracensis 19 



impositella 19 



magnatella 19 



Semele delimata 425 



firma 425 



Serpulorbis papulosus 376 



Sigmatomera amazonica 91 



Siliqua subaequaUs 426 



SilUmanite 192 



Simaethis fabriciana alpineUa 12 



Smaragdia viridis 396 



Smaragdite 186, 188 



Solariella (?) tricarinata 397 



Solenognathus gimtheri 445 



Sophronanthe hispida 473 



Sphecophila polybiarum 216 



Spiaachia spinachia 437 



Spinel 192 



Spirorbis inexpectatus 36 



Spondylus bostrychites 413 



gumanomocon 413 



Sportella lioconcha 419 



Stemodia schottii 476 



tomentosa 476 



Stigmatophora argus 444 



Strigilla pisiformis 426 



Strombiformis ischnon 395 



praelubrica 395 



sarissiformis 394 



stimulus 395 



Stiombina caribaea 350 



caribaea micra 351 



cyphonotus 351 



haitensis 351 



pohtissima 351 



prisma 351 



Strombinella acuformis 351 



Strombus ambiguus 367 



ambiguus bifrons 367 



