Reference

Wilhelm Foissner (1997): Infraciliature and systematic position of the marine interstitial ciliates (Protozoa, Ciliophora) *Lopezoterenia torpens* (#Kahl#, 1931) nov. gen., nov. comb., *Discotricha papillifera* #Tuffrau#, 1954, and Paraspathidium fuscum (Kahl, 1928) Fjeld, 1955 – Rev. Soc. Mex. Hist. Nat. – 47: 41 - 63.