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.
Difflugia bicruris, after Gauthier-Lièvre et Thomas, 1958 Difflugia bicruris Gauthier-Lièvre et Thomas, 1958 Diagnosis: Test elongate ovoid, in cross section circular, with almost parallel sides;
Difflugia congolensis, after Gauthier-Lièvre et Thomas, 1958 Difflugia congolensis Gauthier-Lièvre et Thomas, 1958 Diagnosis: Test elongate pyriform, acuminate, with a spine of variable size and
Difflugia Ovoid Group Key characters: Test ovoid, in cross section rounded. Pseudostome circular. 1 Test with collar or short neck 2 1′ Test without collar