63. _Vorticella patellina_ Müller.
64. _Zoothamnium elegans_ D'Udek.
65. _Cothurnia crystallina_ Ehr.
66. _Cothurnia nodosa_ Cl. & Lach.
67. _Cothurnia imberbis_ Ehr.
Subclass SUCTORIA.
Family PODOPHRYIDÆ.
68. _Podophrya gracilis_, n. sp.
69. _Ephelota coronata_ Wright.
Family ACINETIDÆ.
70. _Acineta divisa_ Fraip.
71. _Acineta tuberosa_ Ehr.
Family DENDROSOMIDÆ.
72. _Trichophrya salparum_ Entz.

* This classification includes only the orders and families
represented at Woods Hole



Genus AMOEBA Auct.

The pseudopodia are lobose, sometimes absent, the body then
progressing by a flowing movement; the body consists of ectoplasm and
endoplasm, the latter being granular and internal, the former hyaline
and external. There is always one nucleus and one vacuole, but both
may be more numerous. Reproduction takes place by division or by
spore-formation. Fresh-water and marine.