EXPLAXATKiX OF PLATE V 



Spdiiy'oplivllniu eiiorme, Elli. liJ. 



A vveatliered hut better presei-ved exainplc than tliat sIhiwh 

 ill Plate iv. The corallites are iimrf clearly detiiietl and 

 the septal laiuelhe visible. — Ma^'uiiird iipproxiniatclv (Hie- 

 foui-th. 



