Genus: Body ovoid, inflexible; ventral surface flattened, dorsal surface convex;
peristome broadly triangular (Kudo, 1966).
Cell body is ovoid, dorsoventrally flattened; dorsal surface may be equipped
with some ornamentation; three groups of cirri (frontoventral, transverse & caudal);
macronucleus C-shaped, "3"-shaped, or horsehoe-shaped (Carey, 1992).
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
