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U.S. NATIONAL MUSEUM BULLETIN 287 



burnsii 



chipolana 



constrictus 



crawfordianus 



floridanus 



galianoi 



litorinus 



nubila 



ocalana 



pardoanus 



rugifera 



strebeli 



vaginatus 



Polygyra 



adamnis 



ashmuni 



chiricahuana 



collisella 



mearnsii 



megasoma 



microforis 



miorhyssa 



nelsoni 



pseudodonta 



rhyssa 



santacruzensis 

 Pomaulax 



turbanicus 

 ■^'Pompholigina 

 Pompholyx 



solida 

 Poromya 

 albida 

 chilensis 

 cymata 

 elongata 

 equatorialis 

 granatina 

 jamaicensis 

 mactroides 

 margarita 

 microdonta 

 peria 



tenuiconcha 

 transversa 

 triangularis 

 Portlandia 



collinsoni 

 Potamides 

 acutus 

 ecarinatus 

 gracilior 

 matsoni 

 milium 



transecta 

 Priene 

 pacifica 

 *Pristigloma 

 *Privigna 



pilsbryi 

 ^ Probolaeum 

 *Prodotia 

 '■' Profischeria 

 *Progabbia 

 '^'Prolucina 

 *Promartynia 

 Propeamussium 

 (Propeamusium) 



alaskensis 



diomedeum 



holmesii 



kauaium 



malpeionium 



marmoratum 



molokaium 



nesiotum 



paiioloum 



pourtalesianum 



sayanum 



striatulum 

 Proserpina 



derbyi 

 Proserpinella 



hannae 

 * Protapes 

 Protocardia 



harrisi 

 jamaicensis 

 panamensis 

 paziana 

 tinctum 

 '^ Protothaca 

 grewingkii 

 spatiosa 

 suiculosa 

 'Provanna 



lomana 

 '• Psammacoma 

 brasiliana 

 extenuata 

 hesperus 

 holmesii 

 olivella 

 panamensis 

 platensis 

 tageliformis 

 tracta 

 Psammobia 



cerasia 



claibornensis 



wagneri 

 ^Psammoica 

 Psammosolen 



galapaganus 

 *Psammotoena 

 *Psammotreta 

 *Pselligyra 

 "^Tsephidia 



brunnea 



cymata 



ovalis 

 Pseudamusium 

 (Pseudamussium) 



alaskensis 

 andersoni 

 arces 



bistriatum 

 frontalis 

 guppyi 

 incongruum 

 liriope 

 neoceanicus 

 panamensis 

 polyleptus 

 reticulus 

 ringnesia 

 sigsbeei 

 strigillatum 

 thalassinus 

 *Pseudochilina 

 limnaeformis 

 Pseudocyrena 

 dupliniana 

 *Pseudoglomus 

 Pseudohyalina 

 pugetensis 

 * Pseudomelatoma 

 Pseudomiltha 

 megameris 

 Pseudomurex 

 kincaidi 

 orcuttiana 

 Pseudopythina 

 americana 

 compressa 

 myaciformis 

 protracta 

 *Pseudorhodea 

 Pseudorotella 

 bibbiana 

 cecinella 

 floridensis 



