102 CORALS 



render the relationship very obscure. Guynia has the same 

 annular ridges of growth, and it has usually the same number 

 of large and small septa, but it is attached by its side to 

 shells and has no inflated base. 



The only other coral with which it seems to have any 

 true relation is the extinct genus Conosmilia from the 

 Tertiary deposits of Australia. 



