178 < 0LLIN8 \M) hi i;\ I 1 



PLATE IV. 



mothamnion Codii II. M. Richards. 



Fiqubb23. I'nion of three rhiioids from differenl nodes. 310 X 1. 



D \vu Bpinuligera Collin- & Hervey, 



Figure 24. Branch with ramelli and young and mature stichidia 120 x 1. 

 Fiqubb25. Cross section of branch. 160 X 1. 



Gvmnothamnion bipinnatuni Collins A: Ilervey. 



Figure 26. Prostrate filament with two erect and two descending axes. 

 300 X 1. 



Ceramium cruciatum Collins A: Her. 



Figure 27. Prostrate filament with rhizoids and base of erect filament. 



65 X 1. 

 Figure 28. Branch with tetraspores. L20 X 1. 



