ACADEMIC PRESS INC. (LONDON ) LTD. 

 24-28 OVAL ROAD 

 LONDON NWl 7DX 



U.8. Edition published by 



ACADEMIC PRESS INC. 



Ill FIFTH AVENUE 



NEW YORK, NEW YORK 10003 



Copyright (g) 1980 by Academic Press Inc. (London) Ltd. 



All rights reserved 



NO PART OF THIS BOOK MAY BE REPRODUCED IN ANY FORM BY PHOTOSTAT, 

 MICROFILM, OR ANY OTHER MEANS, WITHOUT WRITTEN PERMISSION FROM 



THE PUBLISHERS 



British Library Cataloguing in Publication Data 



Advances in marine biology. 

 Vol. 17 



1. Marine biology 



I. Blaxter, J. H. S. II. Russell, Sir Frederick 

 Stratten III. Yonge, Sir Maurice 

 574.92 QH91 63-14040 

 ISBN 0-12-026117-0 



Printed in Great Britain by John Wright & Sons Ltd, 

 The Stonebridge Press, Bristol 



