Retusidae

Retusidae is a family of very small sea snails, barrel-bubble snails, marine opisthobranch gastropod mollusks. These are headshield slugs, in the superfamily Bulloidea.

Genera
Genera within the family Retusidae include:
 * Pyrunculus Pilsbry, 1895
 * Relichna Rudman, 1971
 * Retusa T. Brown, 1827
 * Sulcoretusa J.Q. Burch, 1945
 * Genera brought into synonymy:
 * Coleophysis: synonym of Retusa T. Brown, 1827
 * Cylichnina Monterosato, 1884 : synonym of Retusa T. Brown, 1827
 * Mamilloretusa F. Nordsieck, 1972 accepted as Retusa T. Brown, 1827
 * Sao H. Adams & A. Adams, 1854 accepted as Pyrunculus Pilsbry, 1895
 * Sulcularia Dall, 1921 accepted as Sulcoretusa J.Q. Burch, 1945
 * Utriculus T. Brown, 1844 accepted as Retusa T. Brown, 1827