102 S lurch. — Harvey el la mirabilis ( Schmitz & Reinke). 
Fig. 14. Auxiliary cell after fusion, which has cut off an upper hemispherical 
cell. Zeiss apoc. 8 mm., Oc. 18 : reduced 
Figs. 15 and 16. Further stages in the development of the young gonimoblast. 
Zeiss apoc. 8 mm., Oc. 18 : reduced 
In Figs. 13, 14, 15 and 16 the carpogonium, the three small cells of the 
carpogonial branch, the auxiliary cell and its more or less fused sterile filaments, 
and the cells of the young gonimoblast are dotted. 
Fig. 17. Part of a section of a mature cystocarpic frond of H. mirabilis. The 
remains of the auxiliary cell, the gonimoblast, and the spores in various stages of 
development are dotted. Zeiss apoc. 8 mm., Oc. 18 : reduced 
Fig. 18. Portions of filaments of H. mirabilis growing between the cells of 
Rhodomela subfusca. Cells of Harveyella - filaments are dotted. Zeiss apoc. 8 mm., 
Oc. 18 : reduced •£. 
