Family: Body often reniform; with ciliary rows making asymmetrical patterns; division within reproductive cysts (Kudo,1966). Genus: Ovoid, inhabiting a mucilaginous sac or lorica; vestibulum large and shallow, occupying 1/3 of ventral surface; on the right of the vestibulum lie a short row of long curved cilia; a macronucleus; contractile vacuole subterminal (Carey, 1992).

50 μm 100 μm 150 μm; x 400 : 31 μm 63 μm 94 μm; x 640