ALPHABETICAL INDEX 
TO THE 
GENERA AND SPECIES. 
PAGE 
Achatina. 
Acbatina acicula 36 
Acme. 
Acme fusca 35 
Acme minuta 35 
Agin A. 
Agina purpurea 103 
AxEmi.. 
Akera flexilis 59 
Aeasmodon. 
Alasmodon margaritiferus 83 
Alasmodon margaritiferus, var. 
arcuata 84 
Alasmodon margaritiferus, var. 
minor 83 
Alasmodon margaritiferus, var. 
olivacea 84 
Alasmodon margaritiferus, var. 
Roissyi 83 
Amphidesma. 
Amphidesma Boysii 105 
Amphidesma prismatica 105 
Amphidesma tenuo 105 
Amphidesma truncata 106 
Amphipeplea. 
Amphipeplea glutinosa 30 
Amphipeplea involuta 29 
Amphipeplea lacustris 30 
Anatina. 
Anatina arctica — 
Anatina convexa 110 
Anatina declivis 109 
Anatina distorta 110 
Anatina prsetenuis 106 
Anatina pubescens 110 
Anatina truncata 110 
Ancylus. 
Ancylus fluviatiles 59 
Ancylus lacustris 60 
Anodon. 
AnodonCygneus 79 
Anodon Cygneus, v. anatina .... 79 
PAGE 
AnodonCygneus, V. Avonensis . 80 
AnodonCygneus, V. cellensis ... 79 
Anodon Cygneus, v. complanata 80 
Anodon Cygneus, v. contorta ... 81 
Anodon Cygneus, v. intermedia . 79 
Anodon paludosus 79 
Anodon Cygneus, v. piscinalis ... 80 
Anodon Cygneus, v. ponderosa . . 80 
Anodon Cygneus, V, rostrata .... 80 
AnodonCygneus, v.stagnalis ... 79 
AnodonCygneus, v. subrhomhea 80 
Anomia. 
Anomia aculeata 70 
Anomia cepa 70 
Anomia cylindrica 70 
Anomia ellectrica 70 
Anomia Ephippium 69 
Anomia fornicata 70 
Anomia punctata 70 
Anomia squamula 69 
Anomia striolata 70 
Anomia tubularis 70 
Anomia undulata 69 
Aplexus. 
Aplexus hypnorum 30 
Akca. 
Area barbata 86 
Area fusca 86 
Area lactea 86 
Area Nose 86 
Area perforans 86 
Area reticulata 86 
Area tetragona 86 
Arcopagia. 
Arcopagia crassa 99 
Arcopagia ovata 99 
Arion. 
Arion empiricorum 55 
Arion hortensis 55 
Artemis. 
Artemis exoleta 92 
Artemis lincta 92 
Assiminia. 
Assiminia Grayana 27 
page 
Avicula. 
Avicula Anglica 74 
Avicula Atlantica 74 
Avicula Hirundo 74 
Azeca. 
Azeca tridens 42 
Azor. 
Azor antiquatus 113 
Balnea. 
Balaea fragilis 37 
Balaea perversa 37 
Balanus. 
Balanus balanoides 120 
Balanus candidus 121 
Balanus communis 120 
Balanus conoides 121 
Balanus costatus 120 
Balanus Cranchii 121 
Balanus Montagui 121 
Balanus ovularis 120 
Balanus punctatus 121 
Balanus rugosus 120 
Balanus Scoticus 121 
Balanus spongicola 121 
Biloculina. 
Biloculina elliptica 2 
Biloculina lactea 2 
Biloculina marginata 2 
Biloculina oblonga 2 
Bithiana. 
Bithiana tentaculata 27 
Bithiana ventricosa 27 
Brochus. 
Brochus annulatus 125 
Brochus ai'cuatus 125 
Brochus glaber 124 
Brochus Isevis 125 
Brochus reticulatus 124 
Brochus striatus 125 
Brochus trachiformis 124 
Buccinum. 
Buccinum Anglicanum 4 
Buccinum acuminatum 4 
page 
Buccinum breve 4 
Buccinum carinatum 126 
Buccinum fusiforme 4 
Buccinum glaciale 4 
Buccinum Humphrysianum .... 4 
Buccinum obtusulum 4 
Buccinum ovum 4 
Buccinum undatum 4 
Bulimus. 
Bulimus acutus 37 
Bulimus Lackhamensis 36 
Bulimus lubricus 36 
Bulimus montanus 36 
Bulimus obscurus 36 
Bulla. 
Bulla alba 56 
Bulla Cranchii 57 
Bulla denticulata 57 
Bulla emarginata 57 
Bulla Hydatis 57 
Bulla lignaria 56 
Bulla producta 57 
Bulla striata 57 
Bulla zonata 59 
BuLLiEA. 
Bullaia aperta 57 
Bullaea catinulifera 131 
Bullsea Catina 57 
Bullaea punctata 58 
Calyptilea. 
Calyptraea Sinense 60 
Capsa. 
Capsa castanea 97 
Capsa complanata 97 
Cardium. 
Cardium aculeatum 87 
Cardium echinatum 88 
Cardium edule 87 
Cardium edule, var. rusticum.. 87 
Cardium exiguum 88 
Cardium fasciatum 88 
Cardium Isevigatum 88 
Cardium oblongum 88 
Cardium tuberculatum 87 
Cardium zonatum 88 
