V 



Plate VI. 



1. Sertularella rugosa on F. foliacea, nat. size. 1a, 

 Calycles and gonophores enlarged, p. 107. 



2. Diphasia tamarisca, nat. size. 2a, Calycles and 

 female capsule (after Hincks), p. 111. 



s\ V-^ ^v^* I^ipli^sia pinnata, nat. size, p. 111. 



