



PLATE LXX. 



FIG. 



1. Cycloum papillosum, p. 364, magnified. 



2. Circle of its Ova magnified. 



3. Ovarium (?) greatly magnified. 



4. Polypidom of the natural appearance and size. 



5. A magnified view of Pedicellina echinata, p. 382. 



%* For the beautiful drawings from which this Plate was engraved I am indebted 



to Arthur H. Hassall, Esq. 



