The editors of this volume are all members of the International Bryozoology Association. Its objectives are to encourage research on Bryozoa and stimulate others to participate and cooperate through informal meetings and correspondence; to provide a forum for exchange of ideas; to establish a means and an opportunity for personal contact and interaction in aiming for better mutual understanding; to serve as a liaison among bryozoologists; and to introduce new students to the workers in this field. This volume which contains papers presented at the Association’s 19th international conference furthers these objectives.