CONTENTS. 



Pago 



Preface v 



List of the Species noticed and described vii 



The Holothuroidea 1 



The Echinoidea 19 



The Asteroidea 23 



The Ophiuroidea and Astrophytidse 54 



The Crinoidea (Comatulse) 73 



General Conclusions 79 



Index 81 



Six Plates, and their Descriptions. 



