PLATE LXVI. 



?IG. 



1. FLUSTRA MEMBRANACEA, p. 348. Of the natural size. 



2. Some of its cells magnified. 



3. Another magnified view, to show the hollow processes 



which proceed from some of the cells. 



4. FLUSTRA LINEATA, p. 349. The figure represents a few 



of the cells magnified, but it is far from good. 



5. FLUSTRA HISPIDA, p. 363, as seen through a common 



magnifier. 



6. SALICORNARIA FARCIMINOIDES, p. 355. Of the natural size. 



7. A portion of the same magnified. 



8. Some cells of SALICORNARIA SINUOSA, p. 356, magnified. 



