21) Monocystis pontodrili Subbarao et al. 1979

Infested organ. Seminal vesicles, coelom, body muscle

Type host. Pontodrilus bermudensis

Type locality. Lalbag, Murshidabad, West Bengal, India

Description. Elongated or cylindrical, 350 × 150 µm Mucron present. Cyst also embedded in body muscle, size 350 × 160 µm. Gamets are isogamous, 4.0 − 4.5 in diameter. Spores boat shaped, 8.0 × 3.2 µm.