| 
PuateE 10. 
te Sertularella tropica, page 14. 
Fig. 1. An entire colony. x 12. 
Fig. 2. Part of a colony showing origin of branches. x 12. 
Figs. 3, 3b. Two hydrothecae enlarged. x 80. 
Aglaophenia struthionides, page 18. 
Fig. 4. A stem from off Hood Island, natural size. 
Fig. 5. An entire colony from Southern California, natural size. 
Fig. 6. Part of Fig. 4 enlarged. 
