PLATE XI. 



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



Fig. I. Halecitim speciosiim Nutting. Part of colony, showing hydrophores 

 and gonangia (enlarged). 



2. Single hydranth (greatly enlarged). 



3. Halecitim ornatum Nutting. Part of colony, showing hydrophores 

 (enlarged). 



4. Single immature gonangium (enlarged). 



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