180 



COLLENS AND HERVET. 



PLATE V. 



FiGUKE 29. 

 FlGUEE 30. 

 FiGTJKE 31. 



FiGUBE 32. 



Figure 33. 



FiGDBB 34. 



Figure 35. 



Ceramium transversale Collins & Hervey. 



Prostrate filament with erect filament and rhizoids. 120 X 1. 

 Erect filament with branch. 255 X 1. 

 Branch with tetraspores. 160 X 1. 



Nitophyllum Wilkinsoniae Collins & Hervey. 



Section of frond through a sorus. 160 X 1. 

 Superficial view of a sorus. 160 X 1. 



Halymenia bermudensis Collins & Howe. 



Cross section. 255 X 1. 



Halymenia pseudofloresia CoUins & Howe. 



Cross section. 130 X 1. 



