i 



Plate 70. 

 1-5. Spatagocystis Challengeri A. Ag. ; ''Challenger" Station 147. 



1. Specimen 48 mm. in length, seen from the actinal side. 



2. The same, seen from the interior. 



3. The same, seen from the interior of the abactinal side. 



4. Actinostome and plates surrounding the same. 



5. Anal system and posterior extremity of the same. 



