Trochulus sericeus - <i>Helix sericea</i> Draparnaud, accepted as <i>Trochulus sericeus</i><a rel="nofollow" class="external autonumber" href="http://www.animalbase.uni-goettingen.de/zooweb/servlet/AnimalBase/home/species?id=2552">[1]</a>. From Illustrated Index of British Shells, Plate XXIII., Fig. 11. © George Brettingham Sowerby II - Public domain - Wikimedia Commons
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