X CONTENTS. 



CHAPTER V. 



PAOE 



The Compaeativtb Morphologt of the Ceattish. The steuo- 



TUEB AKD THE DEVELOPMENT OP THE CeAYFISH OOMPAEED 

 WITH THOSE OF OTHEE LIVING BEINGS 227 



CHAPTER VI. 



The Disteibution and the Etiology of the Ceatfishes . 



NOTES 347 



BIELIOGEAPHr 357 



INDEX 863 



