Suctoria

Thus the Infusoria, including the Ciliata and the Suctoria, are usually littoral in their habitat, living upon the shore-dwelling, or attached, water plants and upon the animals frequenting them.

Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 1906

Large forms of _Suctoria_ with tentacles arranged in fascicles.

Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 1906

Without cilia (in adult state) Subclass _Suctoria_ tentacles

Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 1906

This is one of the commonest of the _Suctoria_ found at Woods Hole.

Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 1906

The presence of tentacles makes these forms of especial theoretical interest, especially in the light of the origin of _Suctoria_.

Marine Protozoa from Woods Hole Bulletin of the United States Fish Commission 21:415-468, 1901 1906

Dr.R. Kossmann has given a very interesting discussion on this subject in his 'Suctoria and Lepadidae,' 1873.

Insectivorous Plants Charles Darwin 1845