Family: Anterior preoral kinetal arcs of all, body tapers at forward end.
Genus (Strand, 1928):
body ovoid, with pre-oral suture skewed left to a point; ventrally flattened, dorsally convex
(How to know the protozoa, 1979).
With distinct postoral ? beak or unciliated field in ventral body cilia; preoral kinety complete
(Illustrated Guide, 1985).
Species: Nineteen to twenty ventral ciliary rows; oral basket with about twelve rods
(nematodesmata) and with three preoral membranes; macronucleus oval, a characteristic concentric structure;
micronuleus small; body 100-300 μm long (Kudo, 1966).
130-150 μm long (How to know the protozoa, 1979).
45 μm long, numerous contractile vacuoles
(Carey, 1992).
50 μm
100 μm
150 μm; x 400 :
31 μm
63 μm
94 μm; x 640
