CONTENTS 



Introduction page 405 



The age of Fin whales at physical maturity 



Determination of physical maturity 407 



Unreliability of length as a measure of age 409 



Age evidence from the corpora lutea 409 



Correlation of physical maturity data with age evidence from corpora lutea 417 



Conclusions summarized 418 



Note on multiple ovulations 419 



List of literature cited 421 



Table of records 422 



Plate V follovnng page 434 



