PLATE XXV. 



FIG. 



1. OBELIA GENICULATA, p. 149, nat. size. 



1 a. A shoot, magnified. 



2. GONOTHYR^EA LovENi, p. 181, nat. size. 



2 a. A shoot, magnified, bearing female gonophores. 

 2 b. A capsule, with male gonophores, magnified. 



