PLATE VIII. 



Fig. r,:i. — Sertulai ella turgida. Gonotheea. From San Pedro, x 22. 



Figs. 64, 65.— Hydrotheeae. From San Pedro, x 22. 



Fig. 66. — Portion of stem. From San Pedro, x 22. 



Fig. 67. — Gonotheea. From San Pedro, x 22. 



Fig. 68. — Gonotheea. From San Diego, x 22. 



Fig. 69. — Hydrotheeae. From San Diego, x 22. 



Fig. 70. — Sertularia desmoidis. — a, face; h, reverse, x 22. 



Fig. 71. — Same species. Hydrotheeae, face view, x 22. 



Fig. 72. — Same species. Gonangium. x 27. 



Fig. 73. — Sertularia furcata. Hydrotheeae. a, face; b, reverse. Extreme 

 type, x 30. 



Fig. 74. — Same species. Hydrotheeae from proximal portion of stem. Face 

 view, x 30. 



Fig. 75. — Same species. Gonangium, showing a large and a small gonn- 

 phore, and coenosareal processes, x 30. 



Figs. 76-79. — Sertularia argentea. 



Fig. 76. — Young hydrotheeae. x 30. 



Fig. 77. — Young gonotheea. x 30. 



