Plate 75, 

 1-4. Cystechinus Loveni A. Ag. ; Station 3415. 



1. Seen from the actinal side, 83 ram. in length. 



2. Another specimen, 88 mm. in length, seen from the abactinal side, denuded. 



3. Fragment showing the abactinal side. 



4. The same fragment, seen from the interior. 



All figures natural size. 



