PLATE VII. 



Fig. 56. — Same species, a. Gonophore arising from hydrotheea. x 30. 

 l>. Gonotheea somewhat eollapsed; gonophoTe indicated. Re 

 duplicated hydrotheca. x 30. 



Fig. .37. — Sertularella hesperia. a, h, c, d. Types of hydrotheeae. x 45. 



Pig. 58. — S:ime species. Stem, x 45. 



Figs. 59-tiO. — Sertularella turgida. 



Fig. 59. — Gonotheea. From San Francisco, x 22. 



Fig. CO. — Gonotheea. From San Francisco, x 22. 



Fig. 61. — Hydrotheeae. From San Francisco, x 22. 



Fig. 62. — Gonotheea. From San Pedro, x 22. 



