ALPHABETICAL INDEX. 
138 
PAGE 
Pecten Islandicus 72 
Pecten Jacobseus 71 
Pecten Jamesoni 73 
Pecten lajvis : . . . . 72 
Pecten Land sbiirgi 73 
Pecten maximus 71 
^Pecten nebulosus 72 
Pecten nivius 72 
Pecten obsoletua 72 
Pecten opercularis 71 
Pecten similis 73 
Pecten sinuosua 73 
Pecten apinoaus 73 
Pecten tumiclns 73 
Pecten variua 72 
Pectuxcultjs. 
Pectuncnlua Gtycimeria 85 
Pectunculua piloaus 85 
Pentelasmis. 
Pentelaamis anatiferua 119 
Pentelaamis anaeriferua 119 
Pentelaamia dentatiia 119 
Pentelaamia faacicularia 120 
Pentelaamia radula 120 
Pentelaamia atriatua 119 
Petricola. 
Petricola Iria 89 
Phasianella. 
Phaaianella craaaior 10 
Pliaaianella pullua 9 
Phaaianella acripta 10 
PnoLAS. , 
Pholaa Candida 115 
Pholas criapata 114 
1 Pholaa dactylua 115 
Pholaa lamellata 116 
Pholas paxjyracea 114 
Pholas par va 115 
Pholas striata 115 
Pholas sulcata’ 115 
Pholas tuberculata 115 
Physa. 
Physa acuta 30 
Physa fontinalis 30 
Physa hypnorum 30 
Pileopsis. 
Pileopsis ungarica 60 
Pinna. 
Pinna elegans 76 
\ Pinna ingens 75 
Pinna fragilis 75 
Pinna pectinata 75 
PiSIDIUM. 
Pisidiiim amnicum 94 
Pisidium appendiculata 95 
Pisidium cinereum 95 
Pisidium foutinale 94 
Pisidium Henslowianum 95 
Pisidium Jenynsii 132 
Pisidium Joannis 132 
PAGE 
Pisidium nitidum 95 
Pisidium obliquum 94 
Pisidium obtusale 94 
Pisidium pulchellum 94 
Pisidium pusillum 95 
Planaeia. I 
Planaria alba 20 
Planaria pellucida 20 
Plan ORRIS. 
Planorbis albus 31 
Planorbis carinatus 31 
Planorbis contortus 33 
Planorbis corneus 31 
Planorbis imbricatus 31 
Planorbis lie vis 31 
Planorbis marginatus 32 
Planorbis nitidus 33 
Planorbis purpureus 31 
Planorbis spirorbis 33 
Planorbis voi-tex 32 
Pleukobranchus. 
Pleurobranchus membranacea. 62 
Pleurobranchus plumula 62 
Pleorotoma. 
Pleurotoma decussatum 127 
Pleurotoma gracilis 7 
Pleurotoma reticulata 8 
Pleurotoma sinuoaa 8 
Pleurotoma Trevellianum 127 
POLLICIPES. 
Pollicipea cornucopia 118 
POLLYSTOMELLA. 
Polystomella calcar 1 
Polystomella crenulata 126 
Polystomella crispa 1 
Polystomella depressulus 1 
Polystomella Gulielminse .126 
Polystomella Nautilina 126 
PsAMMOBIA. 
Psammobia antiquata 113 
Psammobia costulata 102 
Psammobia costulata 133 
Psammobia Ferroensis 101 
Psammobia florida 133 
Psammobia jugosa 102 
Psammobia Laskeyi 103 
Psammobia Legumen 113 
Psammobia polygona 102 
Psammobia solidula 101 
Psammobia tellinella 102 
Psammobia vespertina 102 
Pullastra. 
Pullastra aurea .... 89 
I 
Pullastra decussata 88 
Pullastra Irus 89 ! 
Pullastra perforans 89 
Pullastra virginea 89 
Pullastra vulgaris 89 
ii. 
Pupa. ^ 
Pupa Anglica 40 
PAGE 
Pupa bidentata 39 
Pupa delucida 39 
Pupa juniperi 40 
Pupa marginata 40 
Pupa muscorum 39 
Pupa secale 40 
Pupa umbilicata 40 
Pupa unidentata 39 
Purpura. 
Purpura lapillus 5 
Pyramis. 
Pyramis acutissimus 15 
Pyramis candidus 14 
Pyramis cingillus 15 
Pyramis crenatus 14 
Pyramis discors 14 
Pyramis elegantissimus 14 
Pyramis indistinctus 14 
Pyramis iacteus 15 
Pyramis laevis 14 
Pyramis nitidissimus 15 
Pyramis nivosus 14 
Pyramis politms 14 
Pyramis similimus 15 
Pyramis spirolinus 15 
Pyramis subarcuatus 14 
Pyramis subtruncatus 14 
Pyramis subulatus 14 
Pyramis trifasciatus 127 
Pyramis truncatua 15 
Pyramis unicus 14 
Pyramis vittatus 15 
Pyrgoma. 
Pyrgoma Anghca 120 
Renoidea. ■ 
Renoidea oblonga 3 
Rissoa. 
Rissoa acuta 11 
Rissoa Adamsii 11 
Rissoa alba 12 
Rissoa approxima 12 
Rissoa arenaria 12 
Rissoa Binghami 10 
Rissoa Bryerea 11 
Rissoa calathisca 10 
Rissoa Candida 11 
Rissoa carinatula 11 
Rissoa cimex 11 
Rissoa conifera 10 
Rissoa costata 11 
Rissoa crystallina 13 
Rissoa decussata 13 
Rissoa denticulata 11 
Rissoa discreiians 13 
Rissoa disjuncta 12 
Rissoa divisa 13 
Rissoa elegans 13 
Rissoa fulgida 13 
•Rissoa fuscata 10 
Rissoa glabra 13 
Rissoa graphica 12 
Rissoa interrupta 12 
Rissoa labiosa 10 
PAGE 
Rissoa lactea ....; 11 
Rissoa maculata 12 
Rissoa marginata 13 
Rissoa obtusa 10 
Rissoa pallida 13 
Rissoa parA’a 11 
Rissoa pulla 13 
Rissoa punctura 12 
Rissoa pyramidilla 11 
Rissoa reticulata 12 
Rissoa retiforma 12 
Rissoa ruber 12 
Rissoa SandAucensis 13 
Rissoa semicostata 11 
Rissoa semistriata 11 
Rissoa similis ...^. 13 
Rissoa spiralis i 13 
Rissoa striata ! 12 
Rissoa strigata 12 
Rissoa subrufa 12 
Rissoa subumbilicata 12 
Rissoa sulcata- 10 
Rissoa tristriata 129 
Rissoa turricida 10 
Rissoa rdvjB 12 
Rissoa uuifasciata 13 
Rissoa ventricosa 12 
Rissoa A’irginea 13 
Rissoa vitrea 13 
Rissoa Zetlandica 11 
Rostellaria. 
Rostellaria pes Pelicani 5 
Rotalia. 
Rotalia Beccari 1 
Rotalia Beccari, var. perversus. 1 
Rotalia crassulus 1 
Rotalia iuflatus 1 
Rotalia lajvigatulus 1 
Rotalia umbilicatulus 1 
Saxicava. 
Saxicava Pholadia .... 
Saxicava plicata 
Saxicava purpurea 103 
Saxicava rugosa 103 
Scalaria. 
Scalaria communis '. 20 
Scalaria clathratulus 21 
Scalaria Turtoni 21 
Scalpellum. 
Scalpellum smilium 119 
ScalpeUum vulgare 119 
SCISSURELLA. 
Scissurella crispata 62 
Segmentina. 
Segmentina lineata 33 
Serpula. 
Serpula contorta 122 
Serpula perversa 122 
Serpula serratula 123 
Serpula spiralis 122 
Serpula triquetra 122 
