PLATE VIII. 



PIS. PAGE 



1 . Odonthalia dentata 87 



1 a, branchlet with, spore-conceptacles, mag- 

 nified. 



1 b, branchlet with stichidia, magnified. 



2. Nitophyllum punctatum 140 



2 a, sorus, magnified. 



3. Catenella opuntia 195 



3 a, fronds, magnified. 



3 b, branch with spore-conceptacle, magnified. 



