PLATE LXXII. 



FIG. 



1. Vesicularia spinosa, p. 370. A small but perfect speci- 



men. 



2. Specimens of the same as they are found when cast on 



the shore. 

 3 A portion of the same magnified : the cells have fallen off. 



4. A portion with the cells remaining : copied from J. V. 



Thompson's Zoological Researches, pi. 3, fig. 5. 



5. Bowerbankia imbricata, p. 377. Of the natural size. 



6. A portion of the same magnified. 



7. Valkeria pustulosa, p. 376. Of the natural size and 



appearance. 



8. The same as it appears when denuded of its cells. 



9. A small piece of V. pustulosa magnified. 



