Saccamoeba spec.
Diagnosis: relatively large Saccamoeba. Slender, with morulate uroid, sometimes papillated; large nucleus with central nucleolus; cytoplasma with many small granules, some of them obvious crystals of undefined shape,
Ecology: from the river Kromme Rijn near the town of Utrecht, the Netherlands.
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
P. pentangulostoma, after Quin et al., 2008 Pontigulasia pentangulostoma Quin et al., 2008 Diagnosis: Shell is brown, laterally uncompressed, parted to neck and body regions
Flabellula citata, from Dykova et al., 2008 Flabellula citata Schaeffer, 1926 Diagnosis: Length in locomotion 15-75 µm; width 25-55 µm. Shape very variable, from a