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U.S. NATIONAL MUSEUM BULLETIN 287 



*Phenacoptygma 



cortezi 

 *Phenacotaxus 



pectinatus 

 Philbertia 



aegialea 



aethra 



amyela 



capaniola 



dictynna 



dione 



doris 



ephaedra 



extenuata 



fraternal is 



Helena 



hesione 



hilaira 



lionta 



nana 



perdecorata 



phylira 



scammoni 



telamon 



trichodes 

 Philine 



bakeri 

 hemphilli 



infundibulum 

 lucida 

 planata 

 '''Philippina 

 Philobrya 

 atlantica 

 *Phlyctiderma 

 notata 

 puncturella 

 Pholadidea 

 minuscula 

 sagitta 

 Pholadomya 

 darwini 

 locardi 

 pacifica 

 Phos 



alternatus 



chelonia 



chipolanus 



cocosensis 



fasciolatus 



gabbi 



intricatus 



metuloides 



mexicanus 



minusculus 



oxyglyptus 

 *Phrygiomurex 

 Phyllaplysia 



taylori 

 '^■Phyllodina 



dodona 



fluctigera 



halistrepta 



lepidota 



pristiphora 

 Phyllonotus 



hystricinus 



santarosana 



stearnsii 

 * Phymorhynchus 



clarinda 



oceanica 

 Physa 



jennessi 



meigsii 

 *Pictoscala 



purpuratum 

 *Pierosoma 

 Pinaxia 



adamsi 

 Pinguitellina 



nucella 

 Pinna 



caloosaensis 



exquisita 



hawaiensis 



oahua 



quadrata 

 Pirenella 



cyclus 

 Pisania 



nux 

 *Pitaria 



calcanea 



callicomata 



filosina 



floridana 



hillii 



kincaidii 



opisthogrammata 



silicifluvia 



subaresta 



tomeana 

 *Placiphora 

 *Placiphorella 



velata 

 Placostylus 



dorseyi 



Placunanomia 

 lithobleta 

 *Plagioctenium 

 demiurgus 

 gabbi 

 halle 



subventricosus 

 Plagioptycha 

 androsi 

 Columbiana 

 direpta 

 gregoriana 

 inaguana 

 instrumosa 

 latebrosa 

 pharcida 

 smirna 

 subandrosi 

 Planorbella 

 rudentis 

 Planorbis 

 conanti 

 disstoni 

 elisus 

 megas 

 ophis 

 rudentis 

 tampaensis 

 willcoxii 

 Planorbula 

 christyi 

 ^Platidia 

 japonica 

 radiata 

 *Platydonax 

 *Plectaria 

 crumena 

 embusa 

 euribia 

 prqjecta 

 Plectodon 

 granulata 

 velvetina 

 Plectosolen 

 abruptus 

 conradi 

 Plekocheilus 

 pirriensis 

 Pleurobema 



alixus 

 Pleurobranchus 

 californicus 

 lacteus 

 Pleurodesma 



