PLATE XII. 
Laminaria yezoensis n. sp. 
Fig. 1. Habit of two plants from Akkeshi, Prov. Kushiro, which 
are attached to the shell of Myiilus. x 0.16. 
Fig. 2. Showing the lower part of the stipe and the disc-shaped 
holdfast seen from the upper side and from the under, x 0.8. 
