Family Microcoryciidae

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Genus Amphizonella

Shell is more or less round, bilayered pellicle, out layer gelatinous 812 µm with fine denticles; inner layer is thin, chitinoid, undulates with internal movements, sac-like. Aperture is invaginated, variable. Pseudopods cyllindroid, finely granular, rounded ends. Movement sluggish. Endoplasm clear, violet; yellow granules in purple vesicles. One ovular nucleus. Ecology: mosses on trees. Monospecific. Type species: Amphizonella violacea Greef, 1866

Genus Diplochlamys

Shell is small, round, grayish-yellow, bilayered; inner hyaline sac enclosing the cell with flexible aperture, outer layer consists of loosely arranged debris. Ecology: mosses, soils. Type species: Diplochlamus leidyi Greef, 1888

Genus Microcorycia

Shell is flexible and comprised of two parts: upper and lower. The upper shell part is dome-shaped, sometimes with concentric ridges or small horns at the dorsal side; thick and less flexible walls than the lower shell part; maybe covered with small debris or mineral particles. The lower shell part consists of a thin, transparent skin, which shows no structure in the light microscope, can be folded up and is open downwards for extruding pseudopodia. The skin only loosely covers the cell body and can be contracted like a sack. There is a zone of gradual transition from the upper shell part to the lower shell part. Ecology: mosses, soils, freshwater. Type species: Microcorycia flava (Greef, 1866) Penard, 1902

Genus Parmulina

Shell is ovoid in aperture view, laterally compressed, hemispheric in lateral view; clear, flexible, chitionoid, opaque with attached debris. Aperture is slit-like. Pseudopods rare, bluntly lobate. Endoplasm granular. One vesicular nucleus. Ecology: mosses on trees. Type species: Parmulina cyathus Penard, 1902

Genus Penardochlamys

Shell is round, wavy outline, chitionoid, flexible, punctuate. Aperture is circular or wavy, rarely visible, slightly invaginated. Pseudopods cylindroid, finely granular, round ends. Endoplasm granular. Two vesicular nuclei; one or two contractive vacuoles. Ecology: freshwater. Monospecific. Type species: Penardochlamys arcelloides (Penard, 1904)

Genus Zonomyxa

Shell is large, resting form is discoid, locomotive form is pyriform; chitinoid pellicle, without mucilaginous envelope, flexible, follows the movements of the cell. Surface with small temporal perforations trough which plasma threads emerge. Pseudopods single, clear, conical, from slit-like aperture. Endoplasm granular, violet tinted. Ecology: Sphagnum or aquatic vegetation. Monospecific. Type species: Zonomyxa violacea Greef, 1866

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