20) Monocystis pheretimi Bhatia &Chatterjee, 1925

Infested organ. Seminal vesicles, Coelom

Type host. Pheretima posthuma

Type locality. India

Description. Variable, spherical, ovoidal, ellipsoidal or dumb bell shaped, measures up to 50 − 200 µm. Nucleus spherical or ovoidal. Gametocyst spherical and measures 80 µm. Oocyst not stated.