Explanation of Plate XX. 



Fig. 1. Batocrinus pyriformis . 

 Diagram of dorsal cup. 



Fig. 2. Actinocrinus proboscidians . 



Arrangement of dorsal plates. 



Fig. 3, Actinocrinus multiradiatus . 

 Diagram. 



Fig. 4. Teliocrinus umbrosus . 



Plan of the dorsal cup. 



Fig. 5. Physetocrinus ornatus. 

 Arrangement of plates . 



Fig. 6. Steganocrinus sculptus. 

 Diagram of dorsal cup. 



Fig. 7. Strotocrinus regalis. 

 Diagram. 



