PLATE XI. 



Fig. 



1. The corallum oi Astroccenia decapliylla, Ed. and H. (P. 29.) 



2. The same, magnified. 



3. The upper part of a calice, magnified. 



4. The corallum of a variety. 



5. The upper part of a calice, magnified. 



6. The corallum, magnified. 



'iThe corallum and calices of Isastrmi HaMonensis, Duncan. (P. 30.) 

 8. J 



