PLATE XI. 

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



FIG. i. Hahcium sfeciosum Nutting. Part of colony, showing hydrophores 

 and gonangia (enlarged). 



2. Single hydranth (greatly enlarged). 



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

 (enlarged). 



4. Single immature gonangium (enlarged). 



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