TAB. LXVIIL 



CORALS OF THE SILURIAN FORMATION. 



Omphyma subturbinata (p. 288). 



Fig. 1. A large specimen found at Wenlock, belonging to the Collection of the 

 Geological Society of London ; somewhat smaller than the natural size. 

 la. A specimen found by us at Benthall Edge, and placed in the Museum of 



Paris ; natural size. 

 lb. Vertical section ; natural size. 

 Ic. Calice ; natural size. 



Ohonophyllum perfoliatum ? (]). .285 and p. 291). 



Fig. 2. Side view of a specimen from Wenlock, belonging to the Collection of the 

 Viscount d'Archiac; natural size. 

 '2a. Its calice ; natural size. 



GoNIOPHl'LLUM Fletcheri (p. 290). 



Fig. 3. Side view of a specimen found at Dudley, by Mr. Fletcher; natural size. 

 3«. Its calice ; natural size. 



