Helicodiscidae

Helicodiscidae is a family of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Punctoidea (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

Genera
Genera within the family include:
 * Lucilla Lowe, 1852
 * Subfamily Helicodiscinae Pilsbry, 1927
 * Chanomphalus Strebel & Pfeffer, 1879
 * Helicodiscus Morse, 1864 - the type genus
 * Polygyriscus Pilsbry, 1948
 * Speleodiscoides A.G. Smith, 1957
 * Radiodiscus - may belong in the Charopidae
 * Subfamily Stenopylinae Thiele, 1931
 * Stenopylis Fulton, 1914
 * Zilchogyra
 * Synonyms:
 * Coarctatio F. Haas, 1945 : synonym of Stenopylis Fulton, 1914 (junior synonym)
 * Hebetodiscus H. B. Baker, 1929 : synonym of Lucilla R. T. Lowe, 1852
 * Hydrophrea Climo, 1974 : synonym of Lucilla R. T. Lowe, 1852