[ref. ID; 2014]
Inverted bell-shaped body with peristomial disc held forward when swimming. Cilia on peristome wind anticlockwise around the apical region. Aboral end without stalk, suckers etc. but with a spine. Body covered with 2 to 4 rings of long conical ectoplasmic processes. Most easily mistaken for Astylozoon which does not possess ectoplasmic processes.
Quote; Colin R. Curds, Michael A. Gates and David McL. Roberts "British and other freshwater ciliated protozoa Part II Ciliophora: Oligohymenophora and Polyhymenophora" Cambridge University Press, 1983 (ref. ID; 2014)