"Hydroids. III A. Plumularia. III B. A fragment enlarged, showing hydrothecae (H.) on one side of each twig, an axillary gonotheca (G.) and minute nematophores." -Thomson, 1916

Plumularia Hydroid

"Hydroids. III A. Plumularia. III B. A fragment enlarged, showing hydrothecae (H.) on one side of each…