PLATE XIV. 



PIO. PAGE 



1. Sporochnus pedunculatus 50 



1 a, a mature receptacle, magnified. 



2. Codium bursa 242 



2 a, fibres of frond, magnified. 



3. Enteromorpha intestinalis 252 



3 a, small portion of frond, magnified. 



4. Calothrix confervicola [on Ceramium rubrum) . 284 



4 a, proliferous thread, magnified. 

 4 6, spores, magnified. 



4 c, portion of thread, magnified. 



