19:)7. 



XATLTRAL SCIRN'CES OF PIULADELPIIIA. 



597 



Pi('<^;i p;iirv;ina 5 



l^ifus ■ 366 



Pinus eilulis 17 



iiuirrayaiui 16 



palustris 281 



rigida 454 



scopuloruin IG 



sylvcstris 20 



vii-iiiniana 456 



Planaria caiulata 94 



Planocera, 145, 524, 526, 528, 531. 545. 



547-549 



elliptica 526 



graffii 146 



liawaiieiisis 147, 14S 



iiKiuilina 514-559 



Plannrbis ...328,528 



Platamis occidentalis 456 



Plectoderes 480 



Plectropoma chlortiptci-iiin 258 



orocota 262 



Pleurodonte 193 



Pleiirotoniaria 404 



Pcecilasina 408,413 



grarile 414 



Polioptila coerulea 458 



Polistotroiua polytrema 461 



stoutii .' 461 



Polycluvta 132. 134 



Polyolierus caudatus 522 



Polydora 197 



anoculata 19", 199 



folonia 199^ 199 



Polygala brevifolia 455 



lut(>a 455 



nuttalli 456 



Polygonum care\a 457 



Polygyra ". 193 



Polynnida^ 110 



Polyjiriou ainoricanum 251 



Polyprionina- 250 



Pomacentridip 433 



Praticolclla 193 



Prionacri.s 176 



coinpressa 176 



erosa 176 



Prionodes 264 



Prionoloplia 169, 170 



l)rovipenni.s 1G9 



sL-rrata 169 



Priono.spio heterobrancliia 195 



tenuis 197,203 



Procolpia 169 



emarginata 169 



minor 169 



Pro.scopinrp 165 



Protodrilus 100, 110. 131 



Prunus sorotina 456 



Pseudohelif'optera 477 



Pseudomnpimp 152 



P.spudopliasmin£r 165 



Pscudopliylliniv 3S8 



Pseudoscrinvie 29 



tridi'iis". 29 



truiR-ata 29,30 



Pseudotsuga mucronata 56 



PseudovertagiLs 36H-368 



Psinidia lenestralis 290 



Prfohessa 35 



Iniddiana 35, 72 



maculipennis 35, 71 



texana 71 



Psychichthys 419 



Purpura .321 



freycineti 246 



f. alabaster 246 



Pycno.scelus surinamensis 282 



Pyrazus 365, 366, 368 



herculea 365 



Pyrgomorpliiiiic 168 



Pyrola chlorantha 457 



secaiuda 457 



PjTula 194,208-219 



carbasea 210, 214, 215 



condita 194, 210, 211, 215, 216 



decussata 210,211, 214-216, 218 



dassumieri, 210, 211. 215, 216, 218 



ficus 210, 211, 215, 216 



(ilia 210, 214, 215 



harrisi 212 



mississippicnsis. 194, 210. 214-216 



papyratia 194, 209-214, 216-218 



p. caloosahatchiensis 210, 212 



pilsbryi 210, 213, 214-218 



p. duplinensis 210, 213, 214 



reticulata 210, 211, 215, 216 



tessellata 210,211,216 



Pyxidanthera barbulata 455 



Quercus ooccinea 456 



digitata 456 



marylandica 454 



michauxii 458 



minor 454 



nana 454 



pliellos 456 



platanoides 456 



prinus 454 



prinoide.s 454 



Quiscalus major 458 



Radinotatum brexnpenne 285 



Rami 278 



Ranuncuhn abortivas 457 



fascicularis 457 



recurvatus 457 



Remora rcmora 439 



Rhexia mariana 456 



Rhinoclavis 366 



Rhododendron maximum 457 



Rhomalea stoUi 174 



Rhvptieus n\aculatus 269 



Ricaniida 468 



Roccus chrj'sops 249 



