216 



BULLETIN 37, UNITED STATES NATIONAL MUSEUM. 



Page. 



Pecten— Continued . 



plirygiam 34 



reticulas 34 



Sigsboei 34 



striatus 34 



strigillatus 34 



thalassinus 34 



Tindatus ' 34 



vitrens 34 



Pectinacea 32 



Pectinidai 32 



Pectinodonta 15G 



arcuata 156 



Pectunculiis 42 



pectinatus 42 



undatus 42 



Pedicularia 134 



decussata 134 



Pedipea 92 



olongatns 92 



liratus P1.47 



mirabilis 92 



tinisulcatus :. PL 47 



Pelecypoda 32 



Peraclo ' ?0 



diversa ^ 80 



helicoide3 .- SO 



reticulata 80 



Periploma 64 



angulifera 61 



fragilis 64 



inffiquivalvis -61 



papyracea 61 



tenera 64 



Peiisticliia 130 



agria 130 



loreta 130 



Pcrna 36 



epliippium 36 



obliqua 36 



Porsicula 108 



catenata 108 



pulchcrrima 108 



Petaloconclius . 144 



erect us • 144 



irregularis 144 



Petrlcola 58 



dactylus 58 



pholadiformis ^ 58 



Petricolida) 58 



Petrophila 92 



Phasianella 158 



brevis 158 



pulcliella 158 



umbilicata 158 



Pliasiaiie]lid£B 158 



Philine 88 



amabilis • 88 



flexuosa 88 



infundibulum • 88 



lincolala PI. 72 



quadrata - PI. 72 



sagra 88 



sinuata. ..- ^...^ 88 



Philinida) 88 



Page. 



Pholadidfe 72 



Pholas campecbiensis 72 



Phos 116 



Candei 116 



parvus 116 



Phyllonotus 120 



fulvescens 120 



hystricinus 120 



Pazi 120 



pomuni 120 



Pinna 36 



camea 36 



mnricata 36 



seminuda 36 



Pisania 114 



pusio 114 



Tariegata 114 



Placopbora 174 



atlantica 174 



Placopboridaj 174 



Placunanomia 32 



rndis 32 



Plana.^idas 140 



Planaxis 140 



lineatus 140 



nucleus 140 



Platidia 28 



radiata 28 



seminula 28 



Platidiida3 28 



Plectodon 66 



Pleurobrancbasa.. ..". 90 



tarda 90 



Pleurobranchida) 90 



Plourobrancbus 90 



amcricanus 90 



Pleurodon 42 



Adamsii 42 



Pleurotoma 90 



albida 96 



periscclida 90 



tellca 90 



vibex 96 



Pleurotomaria 168 



Adansoniana 168 



Quoj'ana 108 



Pleurotoraariidee 168 



Pleurotomella 102 



Agassizii 104 



agria 104 



aresta 104 



Bairdii 104 



Benedict! 102 



Blakeana 104 



Bruneri 102 



Catberinfc 102 



cbariessa 104 



curta 104 



Edgariana '- 104 



Emertonii 104 



engonia 104 



extensa 104 



filifera 104 



formosa 102 



Frielei 104 



