136 



ALPHABETICAL INDEX. 



Cyci,.\s. 



Cyclas calyculata 118 



Cyclas citrina 131 



Cyclas cornea 117 



Cyclas laciistris 117 



Cyclas rivicola 116 



Cyclostom.v. 



Cyclostoma elegans 26 



Cyclostoma marmorea ... 27 



Dreissena. 



Dreissena polymorpha 97 



Helix. 



Helix aculeata 68 



Helix alliaria 82 



Helix Arbustorum 59 



Helix aspersa 55 



Helix Cantiana 6.3 



Helix caperata 74 



Helix Carthusiana 63 



Helix cellaria 81 



Helix concinna 72 



Helix crenella 62 



Helix crystellina 84 



Helix depilata 72 



Helix ericitorum 76 



Helix excavata 85 



Helix fulva 65 



Helix fusca 66 



Helix granulata 69 



Helix hispida 71 



Helix liortensis 57 



Helix hybrida 58 



Helix lamellata 67 



Helix lapicida 60 



Helix limbata 65 



Helix lucida 83 



Helix margaritacea 87 



Helix nemoralis 56 



Helix nitldula 82 



Helix obvoluta 87 



Helix pisana 75 



Helix Pomatia 54 



Helix pulchella 61 



Helix pura 86 



Helix pygmsea 79 



Helix radiatula 84 



Helix revclata 69 



Helix rotundata 78 



Helix rufescens 64 



Helix sericea 70 



Helix umbilicata 80 



Helix virgata 73 



LiMAX. 



Limax agrestis 93 



Limax agrestis 128 



Limax arboreus 127 



Limax ater 129 



Limax carinatus 92 



Limax flavus 92 



Limax flavus 128 



Limax gagates 94 



Limax gagates 129 



Limax maximiis 91 



Limax maximus 127 



Limax Sowerbii 128 



Lymn^a. 



Lymnsea auricularia 11 



Lymnsea elongata 10 



Lymnsea involuta 13 



Lymnsea minuta 9 



Lymnsea palustris 9 



Lymnasa peregra 11 



Lymnsea stagnalis 8 



Neritina. 



Neritina fluviatilis 1 



Paludina. 



Paludina Achatina 4 



Paludina impura 4 



Paludina ventricosa 5 



Paludina vivipara 3 



Physa. 



Physa acuta 16 



Physa fontinalis 15 



Physa hypnorura 16 



