title: Retusidae
text: # 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
  