The 16th International Congress of UNITAS MALACOLOGICA (UM) will be held in Antwerp, Belgium, on 15- 20 July 2007. The congress will also host the 73rd annual meeting of the AMERICAN MALACOLOGICAL SOCIETY (AMS). The congress is open for all contributions in the field of malacology and will host several exciting, open symposia, including: Sexual selection; Micromolluscs; Molluscs as models in evolutionary biology: From local speciation to global radiation; Molluscan models: Advancing our understanding of the eye; Inventorying the molluscan fauna of the world: frontiers and perspectives; and Neogastropod origins and evolution. Yet, there is still room for further symposium or session proposals. The congress website will soon be activated. In the meantime additional info can be obtained at: wcm@naturalsciences.be. The website of UNITAS MALACOLOGICA is: http://www.ucd.ie/zoology/unitas/