176 COLLINS AND HERVET. 



PLATE III. 



Lophosiphonia Saccorhiza Collins & Hervey. 



FIGUKE 15. Tip of erect axis with antheridium and leaves. 330 X 1. 



FIGURE 16. Cystocarp. 330 X 1. 



FIGURE 17. Prostrate filament with rhizoids. 120 X 1. 



Lophosiphonia bermudensis Collins & Hervey. 



FIGURE 18. Prostrate filament with rhizoids and erect branches. 160 X 1. 



FIGURE 19. Antheridia. 160 X 1. 



FIGURE 20. Cystocarp. 160 X 1. 



FIGURE 21. Tetrasporangia. 160 X 1. 



Ceramothamnion Codii H. M. Richards. 

 FIGURE 22. Lateral union of two rhizoids from same node. 310 X 1. 



