[ref. ID; 2013] Nassula but is reduced to 3 membranelles lying on left of the oral aperture. Membranelles do not interrupt the left ventral kineties as in Nassula but occur in the region of the suture line. There is a double row of cilia to the right of the oral aperture forming the paroral ciliature. Cytopharynx supported by a basket of trichites. Fusiform trichocysts always present in large numbers beneath the pellicle. Single contractile vacuole always situated ventrally in middle of body. Macronucleus large with adjacent micronucleus centrally positioned. Body often colored blue-green to red due to color of ingested algae. Genus erected by Jankowski (1964) for Cyclogramma Perty, 1852
Quote; Colin R. Curds "British and other freshwater ciliated protozoa Part I Ciliophora: Kinetofragminophora" Cambridge University Press, 1982 (ref. ID; 2013)

• Furgasonia blochmanni Faure-Fremiet, 1967 (ref. ID; 3355) reported author and year? (ref. ID; 191)
  Syn; Cyclogramma blochmanni (ref. ID; 3355)
• Furgasonia lateritia Claparede & Lachmann, 1858 (ref. ID; 1622)
• Furgasonia protectissima (ref. ID; 191)
• Furgasonia rubens Perty, 1852 (ref. ID; 1622) reported year? (ref. ID; 3698)
• Furgasonia sorex (Penard, 1922) (ref. ID; 1622)
• Furgasonia trichocystis (Stokes, 1894) (ref. ID; 1622) reported year? (ref. ID; 3698)