PLATE XXII. 



Fig. I. Halccium spcciosum Nutting. Part of colony, showing hjdrophores and 

 gonangia (enlarged). 



2. Single hydranth (greatly enlarged). 



3. Halecium ornatum Nutting. Part of colony, showing hydrophores (en- 

 larged ) . 



4. Single immature gonangium (enlarged). 



(208) 



