PLATE XIV. 

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



FlG. I. Thuiaria elegans Nutting. 



2. Front view of branch (much enlarged). 



3. Gonangium (much enlarged). 



4. Thuiaria turgida Clark. 



5. Two pairs of hydrothecae (much enlarged). 



6. Front view of branch (enlarged). 



(232) 



