DetailsTrigonostoma behmi (Beyrich) gastropod mollusc collected from Miste in Gelderland, Holland. Trigonostoma is a genus of marine gastropod mollusc belonging to the family Cancellariidae i.e. the nutmeg snails. This specimen is in very good condition; it exhibits a turbinate shell with fine striations. It is a very pretty gastropod and measures 13 mm in length; supplied in a small plastic bag. It would make a wonderful addition to any collection.