Epiphragmophoridae Hoffmann, 1928 Xanthonychidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea.

[2] This family is within the superorder Eupulmonata (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).

The family Xanthonychidae consists of the following subfamilies: Trichodiscininae H. Nordsieck, 1987: belongs to the family Trichodiscinidae H. Nordsieck, 1987 Lysinoidae may be treated as a separate family with subfamilies Leptariontinae, Lysinoinae and Metostracinae.

[3] Genera in the family Xanthonychidae include: