44 CORALS 



coenostenm of the host, and is thus cjiven a firm attachment 



Fig. 13. — In the lower part of the tigurt' is situ a branch oi Lophoht-ha showing 

 two calices on opposite sides. In the upper part of the figure the Lophohelia is 

 seen in blastogenic fusion with an Ainphihelia with much smaller calices. Nat. size. 



for the subsequent growth of the colon}-. The remarkable 



