[ref. ID; 2013]
Body outline shape oval, rounded in cross-section. Completely ciliated on all surfaces of body. Oral aperture in anterior third of body in center of ventral surface, supported by cytopharyngeal basket of trichites. 2 contractile vacuoles present, one which lies in front of the oral aperture has radiating canals. The second is situated terminally. Macronucleus ovoid, centrally placed.
Quote; Colin R. Curds "British and other freshwater ciliated protozoa Part I Ciliophora: Kinetofragminophora" Cambridge University Press, 1982 (ref. ID; 2013)