The next WORLD CONGRESS OF MALACOLOGY (WCM) will be held in Antwerp, Belgium, 15-20 July 2007. It is the 16th International Congress of Unitas Malacologica (UM). The congress will also host the 73rd annual meeting of the American Malacological Society (AMS). The WCM is an opportunity for malacologists from throughout the world to get together to discuss their research. To do so, there will be thematic symposia, open contributed sessions and a poster session with posters on display for the duration of the congress. The WCM will start with an icebreaker on Sunday, July 15th (17:30 – 19:30) in the reception hall of the Zoo of Antwerp, Astridplein, near «Antwerpen Centraal» railway station. Conference sessions will be organised in four parallel sessions on Monday, Tuesday, Thursday and Friday. All sessions will be held in the T-Building of campus «Groenenborger» of the University of Antwerp. The poster session will be held on Tuesday late afternoon/evening and will include a reception with wine, typical Belgian degustations, cheese and of course... a selection of Belgian beers. Wednesday is a free day during which participants can discover the many historical and beautiful places in Antwerp. They can also join one of the optional congress trips or do whatever they want, of course! On Thursday evening AMS will host its annual auction of molluscan books and paraphernalia (no specimens) to benefit its student programs. The conference dinner will be on Friday evening.