PLATE XI. 

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



FIG. I. Halecium speciosum Nutting. Part of colony, showing hydrophores 

 and gonangia (enlarged). 



2. Single hydranth (greatly enlarged). 



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

 (enlarged). 



4. Single immature gonangium (enlarged). 



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