TAB. LXXII. 
CORALS OF THE SILURIAN FORMATION. 
CYsTIPHYLLUM SILURIENSE (p. 297). 
Fig. 1. Side view of a specimen from Wenlock, belonging to the Geological 
Society of London ; natural size. 
la. Vertical section; natural size. 
CysTIPHYLLUM CYLINDRICUM (p. 297). 
Fig. 2. A subturbinate specimen from Dudley, belonging to the Geological Society of 
London; natural size. ' 
2a. Vertical section, amplified. 
24. A broken specimen found at Dudley, by Mr. Fletcher; natural size. 
2c. A young specimen from the same locality and Collection ; natural size. 
CystipHyLLum Gray (p. 298). 
Fig. 3. A specimen from Dudley, belonging to the Collection of Mr. Fletcher ; 
natural size. 
3a. Its calice; natural size. 
