INDEX 



INTRODUCTION, 



List of species found in depths from 50 to 2000 fathoms, . 

 List of species obtained from depths exceeding 2000 fathoms, 

 Geographical distribution of the Elasipoda, 



page 

 1 



3 



4 

 5 



DESCRIPTION OF THE SPECIES, .... 



Order Elasipoda, .... 



Family L Elpidiid^;, ..... 



Tabular view of the genera of the family Elpidiidre, 

 Tabular view of the species of the genus Elpidia, 

 Tabular view of the species of the genus Scotqplanes, 

 Tabular view of the species of the genus Peniagone, 



Family II. Deimatioe, ..... 



Tabular view of the genera of the family Deimatida3, 



Family III. Psychropotim:, .... 



Tabular view of the genera of the family Psychropotidse, 

 Tabular view of the species of the genus Benthodytes, 



9 

 10 



14 



28 

 38 

 54 



60 

 62 



90 



92 

 111 



ANATOMY OF THE ELASIPODA, 



External characters, 

 The body-wall, 

 The calcareous ring, 

 The nervous system, 

 The alimentary canal, 

 The pseudhrcmal system, 

 The ambulacral system, 

 The reproductive organs, 

 General remarks, . 



112 



112 

 121 

 126 

 129 

 131 

 133 

 134 

 141 

 143 



