Cells oval from the ventral side, dorso-ventrally flattened. Length 30 - 50 microns, width 24 - 44 microns. Epicone flattened anteriorly, reaching to approximately 0.4 of the cell length from the apex, becoming narrow and 'stem shaped' at the junction of the cingulum and sulcus. Epicone slightly deflected towards the left, just visible above the hypocone on the dorsal side. Cingulum relatively wide (2 - 3 microns), proximal end 0.4 of the cell length from the apex, travelling up to 0.05 of the cell length from the apex on the dorsal side, then descending, ends not displaced. Sulcus narrow initially, opening into a tear-drop shaped indentation approximately 0.7 of the cell length from the apex, not reaching the antapex. Short (2 - 3 microns) groove extends vertically near the ventral posterior end of the epicone . Nucleus in the centre of the hypocone, elongate oval. Non-motile cells slightly broader than motile cells, surrounded by hyaline layer, hypocone completely surrounds the epicone at the apex of the cell. Many small (2 - 4 microns diameter), yellow-brown chloroplasts present. Small lipid globules often present. Very occasionally, red bodies, possibly food particles, present. In high focus, surface of cell appears rough or grainy. A clonal culture of this species was temporarily kept. Under the culture conditions used, non-motile cells numerically dominated the culture over motile cells. Dividing non-motile cells were also seen.