138 



ALPHABETICAL INDEX. 



PAGE 



Pecten Islandicus 72 



Pectcn Jacobseus 71 



Pecten Jamesoni 73 



Pecten lacvis 72 



Pecten Landsburgi 73 



Pecten maximus 71 



Pecten nebulosus 72 



Pecten nivius 72 



Pecten obsoletus 72 



Pecten opercularis 71 



Pecten similis 73 



Pecten sinuosus 73 



Pecten spinosus 73 



Pecten tumidus 73 



Pecten varius 72 



Pectunculus. 



Pectnnculus Glycitneris 86 



Pectunculus pilosus 85 



Pentelasmis. 



Pentelasmis anatil'erus 119 



Pentelasmis anseriferus 1 1 ;* 



Pentelasmis dentatus 1 l!i 



Pentelasmis fascicularis 120 



Pentelasmis radula 120 



Pentelasmis striatus 119 



Petbicola. 



Petricola Iris 89 



Phasianella. 



Phasianella crassior 10 



Phasianella pullus 9 



Phasianella scripta 10 



Pholas. 



Pholas Candida 115 



Pholas crispata 1 14 



Pholas dactylus 115 



Pholas lamellata 116 



Pholas papyracea 114 



Pholas parva 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 7G 



Pinna ingens 75 



Pinna fragilis 75 



Pinna pectinata 75 



PlSIDIUM. 



Pisidium amnicum 94 



Pisidium appendiculata 95 



Pisidium cinereum 95 



Pisidium fontinale 94 



Pisidium Henslowianum 95 



Pisidium Jenynsii 132 



Pisidium Joannis 132 



Pisidium uitidum 95 



Pisidium obliquum 94 



Pisidium obtusale 94 



Pisidium pulchellum 94 



Pisidium pusillum 95 



Planaria. 



Planaria alba 20 



Planaria pellucida 20 



Planorbis. 



Planorbis albus 31 



Planorbis carina tus 31 



Planorbis contortus 33 



Planorbis corneus 31 



Planorbis imbricatus 31 



Planorbis la?vis 31 



Planorbis marginatus 32 



Planorbis nitidus 33 



Planorbis purpureus 31 



Planorbis spirorbis 33 



Planorbis vortex 32 



Pleurobranchus. 

 Pleurobranchus membranacea.. 62 

 Pleurobranchus plumula 62 



Pleurotoma. 



Pleurotoma decussatum 127 



Pleurotoma gracilis 7 



Pleurotoma reticulata 8 



Pleurotoma sinuosa 8 



Pleurotoma Trevellianum 127 



POLLICIPES. 

 Pollicipes cornucopia 118 



Polystomella. 



Polystomella calcar 1 



Polystomella crenulata 126 



Polystomella crispa 1 



Polystomella depressulus 1 



Polystomella Gulielminse 121! 



Polystomella Nautilina 126 



Psammobia. 



Psammobia antiquata 113 



Psammobia costulata 102 



Psammobia cost ulata 133 



Psammobia Ferroensie 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 



Pullastra decussata 88 



Pullastra Irus 89 



Pullastra perforans 89 



Pullastra virginea 89 



Pullastra vulgaris 89 



P0PA. 



Pupa Anglica 40 



PAGE 



Pupa bidentata 39 



Pupa dclucida 39 



Pupa juniperi 40 



Pupa marginata 40 



Pupa muscorum 39 



Pupa secale 40 



Pupa umbilicata 40 



Pupa unidentata 39 



PURPUBA. 



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 lacteus 15 



Pyramis Uevis 14 



Pyramis Lamarckii 15 



Pyramis nitidissimus 15 



Pyramis nivosus 14 



Pyramis politus 14 



Pyramis similimus 15 



Pyramis spirolinus 15 



Pyramis subarcuatus 14 



Pyramis subtruncatus 14 



Pyramis subulatus 14 



Pyramis trifasciatus 127 



Pyramis truncatus 15 



Pyramis unicus 14 



Pyramis vittatus 15 



Pyrgoma. 



Pyrgoma Anglica 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 discrepans 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 



lactea 11 



Rissoa maculata 12 



Kissoa marginata 13 



Rissoa obtusa 10 



Rissoa pallida 13 



Rissoa parva 11 



Rissoa pulla 13 



Rissoa punctura 12 



Rissoa pyramidilla 11 



Rissoa reticulata 12 



Rissoa retiforma 12 



Rissoa ruber 12 



Rissoa Sandvicensis 13 



Rissoa semicostata 11 



Rissoa semistriata 11 



Rissoa similis 13 



Rissoa spiralis 13 



Rissoa striata 12 



Rissoa strigata 12 



Rissoa subrufa 12 



Rissoa subumbilicata 12 



Rissoa sulcata 10 



Rissoa tristriata 129 



Rissoa turricula 10 



Rissoa ulvse 12 



Rissoa unifasciata 13 



Rissoa ventricosa 12 



Rissoa virginea 13 



Rissoa vitrea 13 



Rissoa Zetlandica 11 



ROSTELLARIA. 



Rostellaria pes Pelicani 5 



ROTALIA. 



Rotulia Beccari 1 



Rotalia Beccari, var. perversus. 1 



Rotalia crassulus 1 



Rotalia indatus 1 



Rotalia kevigatulus 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 



Scalpellum 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 



