Chlamydophrys spec. from Schiermonnikoog
Diagonosis: shell a thin, hyaline and colorless membrane, ovoid, in cross-section elliptical; aperture rounded triangular, invaginated, with a small but distinct tube; cytoplasm doesn't fill the membrane completely; a globule, not a vacuole, is always present just above the aperture in the narrowing cytoplasm which moves through the aperture; nucleus large, ovoid, granular; filopodia branching and anastomosing; cytoplasm filled with food in the region of the aperture and with globules around the nucleus; vacuoles present near the aperture.
Dimensions: 56-70 µm (n=18)
Ecology: sampled from a small pond in a salt marsh on the island of Schiermonnikoog, in the northern part of the Netherlands.
Remarks: this is probably a new species for science, never described before. The most remarkable key characteristic is the globule which is always present in the cytoplasm just above the aperture. Also remarkable is the triangular shape of the aperture.