26 BRITISH FOSSIL CORALS. 



2. PoDOSERis ELONGATA, Duncan. PI. IX, figs. 16, 17. 



The corallum is tall, with a broad, circular, and slightly concave base, a long, conico- 

 cylindrical stem ; and a small calice, much narrower than the base. 



The epitheca is in bands. 



The costtE are alternately large and very small, somewhat distant, wavy, and united 

 by synapticula;, many of which are oblique. 



The septa frequently unite by their axial ends. There appear to be five cycles of 

 septa. 



The base of the corallum has a cellular tissue, probably from the fossihzation of some 

 body to which it was adherent. 



Height i inch. Breadth of base \ inch. Calice \ inch. 



The shape of this species is most unusual. 



Locality . Hunstanton. In the Collection of the Rev. T. Wiltshire, F.G.S. 



