PLATE VII, 



[Proc. Wash. Acad. Sci., Vol. Ill, PI. XVIII.] 



Fig. 1. Campanularia reduplicata Nutting. Part of colony, showing hydro- 

 thecse and gonangium (enlarged). 



2. Campanularia urccolata Clark. Part of colony, showing hydrothecs 

 and gonangia (enlarged). 



3. Campanularia speciosa Clark. Single hydrotheca (enlarged). 

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