CONTENTS. 
The Réle of Mucus in Corals. By J. E. Duzrpen, Ph.D., 
A.R.C.Se.(Lond.), Professor of Zoology at the Rhodes Uni- 
versity College, Grahamstown, Cape Colony 
Observations on the Structure and Life-history of Bietepier a 
periplanet, Lutz and Splendore. By W.S. Perrin, B.A., 
Shuttleworth Research Student of Gonville and Caius College, 
Cambridge. (With Plates 37 and 38) 
A Study of the Life-history of Bucephalus harine anne a 
Parasite of the Oyster. By Davin Hitt TENNENT. (With 
Plates 39—42) ; 
Tite, INDEX, AND CoNTENTS. 
591 
615 
635 
