[ref. ID; 2013]
Body shape ovoid, bearing slight apical protuberance which denotes the site of the oral aperture. There is a prominent cytopharyngeal basket of trichites. Body covered in short cilia and there are many rigid, non-expansible tentacles scattered over its surface. Macronucleus sausage-shaped. Single posterior contractile vacuole. Most easily confused with Actinobolina which has expansible tentacles.
Quote; Colin R. Curds "British and other freshwater ciliated protozoa Part I Ciliophora: Kinetofragminophora" Cambridge University Press, 1982 (ref. ID; 2013)