Parmulina cyathus, found in dry moss on a roof
Genus Parmulina Penard, 1902
Diagnosis: Shell in lateral view hemispherical, compressed laterally, in oral view ovoid; slit-like aperture when folded. Shell clear, flexible, chitinoid, opaque, attached debris. Pseudopods rare, bluntly lobate. Endoplasm granular. One vesicular nucleus.
Feeding: Herbivorous.
Ecology: Dry mosses (on trees and roofs).