114 



Fig. 2. Calcareous deposits of Synapta maculata 1—10 and Synapta oceanica 11—12. 

 1—3 normal plates; 4—5 plates from the abnormal specimen from St. Crux Island; 

 6 miliary granules; 7 anchor; 8—9 vertex of anchors showing the different arrange- 

 ment of the minute knobs in the same specimen ; 10 pieces of calcareous ring. 

 1—5 & 7 x 60; 8-9 x 140; 6 & 11 X 750; 10 & 12 x 4. 



