Een eerste inventarisatie van de terrestrische malacofauna van het Heitje van Katham [Verslagen van onderzoek en excursies i.h.k.v. het Atlasproject Nederlandse Mollusken 11]

A first inventory of the terrestrial molluscfauna of ”Het Heitje van Katham”, a nature reserve in Noord Holland, the Netherlands. The reserve is a unique peat-moor in an otherwise peat-bog area. Its aquatic molluscfauna was already partly known. Here the first information is supplied concerning the terrestrial molluscs living in the reserve. A total of 14 different species were recorded; all are characteristic for swamps and marshes.