Family: Solitary, gregarious, or colonial; most are aloricate, some form lorica; each zooid has its own,
independently contractile myoneme in full length of stalk.
Genus: Solitary, but often gregarious; myoneme continuous within full length of stalk
(Illustrated Guide, 1985).
Species: Resembles V. campanula;
but anterior end somewhat narrow; usually without refractile granules in endoplasm;
50-95 μm long,
35-53 μm wide;
peristome 55-75 μm wide (Kudo, 1966).