Plate IV. 



1. Corymorpha nutans, nat. size (after Allman), p. 77. 



2. Clytia Johnstoni, enlarged, p. 79. 



'^ 3. Obelia geniculata. 3a, Calycles enlarged, p. 81 . 



4. Obelia gelatinosa, nat. size, p. 82. 

 tC^S. Campanularia flexuosa, nat. size, p. 87. 



6. Campanularia angulata, nat. size. 6a, enlarged, 



p. 87. 



7. Lafoea dumosa, enlarged, p. 96. 



