TABLE OP CONTENTS. XVU 



Page 



Schizaster, Agass 163 



fragilis, Dub. $ Kor 164 



Spatangus, LesJce 164 



purpureus, Leske 165 



raschi, Loven 167 



Echinocardium, Gray 168 



cordatum, Penn 169 



pennatifidum, Norm 170 



flavescens, 0. F. Mull 171 



Brissopsis, Agass 172 



lyrifera, Forbes 172 



B. Distribution of the Species. 

 I. Horizontal Distribution beyond British Area, and 



Range in Depth . , 175 



II. Species not known beyond British Area 177 



III. List of British Echinoderms, arranged by grades of 



Depth from above downwards 178 



IV. List of British Echinoderms, arranged by grades of 



Depth from below upward 179 



V. Distribution of Echinoderms within the British Area . 181 



Index 189 



Description of the Plates . . 199 



