Discus is a genus of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Discidae, the disk snails.
Distribution of the genus Discus include Europe, northern Asia and North America.
Discus species have small or medium shells with ribs. The umbilicus is wide.
Species in this genus include:
subgenus Discus Fitzinger, 1833
Discus ruderatus Férussac, 1821 - type speciessubgenus Gonyodiscus Fitzinger, 1833
Discus perspectivus J. C. M. von Mühlfeld, 1816Discus rotundatus (O. F. Müller, 1774) - rotund discsubgenus ?
Discus brunsoni Berry, 1955 - Lake DiscDiscus bryanti (Harper, 1881) - saw-tooth disc, sawtooth discDiscus catskillensis (Pilsbry, 1896) - angular discDiscus clappi (Pilsbry, 1924) - channelled discDiscus engonatus Shuttleworth, 1852 - extinctDiscus ganodus Mabille, 1882Discus gomerensis Rähle, 1994Discus guerinianus R. T. Lowe, 1852Discus kompsus J. Mabille, 1883Discus macclintocki F. C. Baker, 1928 - Iowa pleistocene snail, Pleistocene discDiscus marmorensis H. B. Baker, 1932 - Marbled DiscDiscus nigrimontanus Pilsbry, 1924 - Black Mountain discDiscus patulus (G. P. Deshayes, 1830) - domed discDiscus putrescens (R. T. Lowe, 1861)Discus retextus Shuttleworth, 1852Discus scutula Shuttleworth, 1852Discus selenitoides (Pilsbry, 1890) - file discDiscus shimekii (Pilsbry, 1890) - Striate DiscDiscus textilis Shuttleworth, 1852 - extinctDiscus whitneyi (Newcomb, 1864) - Forest Disc