CONTRIBUTIONS 
TO THE 
DEVELOPMENTAL HISTORY OF THE MOLLUSCA/ 
BY 
E. RAY LANKESTER, M.A. F.RS., 
FELLOW OF EXETER COLLEGE, OXFORD. 
From the PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY.—Panr I. 1875. 
LONDON: 
PUBLISHED FOR THE ROYAL SOCIETY 
BY TRUBNER AND CO., LUDGATE HILL, E.C. 
1875. 
