Acanthocystis Carter, 1863
Diagnosis: Centrohelea with a periplast with tangential plate-scales and external radial spine-scales. Spine-scales with a cylindrical shaft, attached to the central part of a radially symmetrical base-plate.
Type species: Acanthocystis turfacea Carter, 1863
Remarks: The type species A. turfacea Carter, 1863 has been recorded in both marine, brackish, and fresh waters. Most other species occur in fresh waters.
Reference: Siemensma (1991)
Euglypha bryophila, after Brown, 1911 (L), from Ecuador (R) Euglypha bryophila Brown, 1911 Diagnosis: (Original description) The test is very regular in form and subject
(A) A Scenedesmus cell (arrow) is engulfed by a trophozoite. (B) Several Scenedesmus cells adhere to the surface of a plasmodium that has numerous vacuoles
Actinosphaeridium spec. Diagnosis: Cell surrounded by a membranous shell, with an outer mucous layer. Filopodia with granules, sometimes branching. Cell stalked. Ecology: I found this
Euglyphidion enigmaticum – after Bonnet, 1960 Genus Euglyphidion Bonnet, 196 Diagnosis: Shell hyaline, ovoid, pseudostome circular or slightly elliptical. Shell loosely covered with two types of
Leptomyxa sp., slowly retracting in response to the light of the microscope Leptomyxa sp. Diagnose: This is a very large amoeba which I found in
Zivkovicia spec., 200 µm long; the right image is viewed through the aperture Zivkovicia spec. Diagnosis: Shell pyriform, circular in oral view, with a clear