"Hydroids. IV A. Campanularian. IV B. A fragment enlarged, showing stalked hydrothecae (H.), a gonotheca…
"Hydroids. III A. Plumularia. III B. A fragment enlarged, showing hydrothecae (H.) on one side of each…
"Hydroids. II A. Piece of Sertularia. II B. A fragment enlarged, showing sessile hydrothecae (H.) on…