TABLE OF CONTENTS. 



Introduction, ..... 



Desoriptiou of Species, 



Table of Doubtful Species, ... 



List of Opliiurid* and Astrophytidse of the Challenger 



Bathymetrical Tables, .... 



Temperature Tables, .... 



Note on Fossil Species, 



Abbreviations, .... 



Explanation of the Plates, 



Index, ..... 



Postscript, ..... 



Expedition, arranged 



