PLATE XVIII. 



Fig. I. Campanularia reduplicata Nutting. Part of colony, showing iijdro- 

 thecae and gonangium (enlarged). 



2. Campanularia urceolata Clark. Part of colonv, showing hydrothecae 

 and gonangia (enlarged). 



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



(200) 



