PLATE I. 



[ Thejiyures which are not credited to any one else are drawn by the 



Author."] 



FIO. 



1. CLAVA MULTICORNIS, page 2, natural size. 



1 a. The same magnified. 1 b. The planule. From draw- 



ings by Mr. Alder. 



2. CLAVA SQUAMATA, p. 4, nat. size. 



2 a. A polypite of the same, magnified. 



3. CLAVA CORNEA, p. 5, nat. size. 



3 a. A polypite, magnified. 



