PLATE XVIII. 



FIG. 1. The extended arms of the animal, with their various ramifications, on a slab of 

 pyritical lime-stone, from Charmouth. 



2. The arms of the animal collected together, as if for the purpose of confining its 



prey. 



3. The vertebral articulated processes surrounding the pelvis, as if assisting in 



directing the prey to the mouth of the animal. 



4. A fossil body, supposed to be a species of oval encrinite. 



