The 1981 Autumn Symposium (held at the Zoological Society, London, on 31 October) was a new departure for the British Society for Parasitology in that Cambridge University Press have taken over publication of the proceedings. The style and layout of the contributions have been changed in order to conform with the format currently used in the journal Parasitology. The symposia proceedings will now be published as separate issues of Parasitology but with their own distinctive colour and cover design. The proceedings will be available by subscription to the journal or separately. Furthermore, the meeting organizers will in future be responsible for editing the symposia: assistance will be by Drs Taylor and Muller during a transition period.