Opistocysta
Opistocysta Cernosvitov, 1936 (ref. ID; 6913) reported auhor and year? (ref. ID; 6616) or Opisthocysta (ref. ID; 1923)
Family Opistocystidae (ref. ID; 6616, 6913)
ref. ID; 1923
Septa well developed; ventral setae "crotchet", with a swelling, the nodulus; without ventral hair setae. Penis well developed; gonads in segments 21 and 22; spermathecae posterior to the gonads; lateral commissural blood vessels in all body segments. (ref. ID; 1923)
- Opisthocysta flagellum (Leidy) (ref. ID; 1923)
- Opistocysta funiculus Cordero, 1948 (ref. ID; 6616, 6913)
Descriptions
This species resembles a Pristina with its anterior proboscis and the dorsal seta beginning in the second segment. It is easily distinguished by its peculiar posterior gills. (ref. ID; 1923)