title: Tethydidae
text: # Tethydidae
  
  Tethydidae is a family of dendronotid nudibranch gastropod mollusks in the superfamily Tritonioidea.
  
  The original spelling (subfamily) is Tethydia. It was placed on the Official List by Opinion 1182 of ICZN (1981: 174), which also ruled that the name should be corrected to Tethydidae (Bouchet & Rocroi, 2005).
  
  ## Taxonomy
  
  This family is within the clade Cladobranchia and has no subfamilies (according to the taxonomy of the Gastropoda by Bouchet & Rocroi, 2005).
  
  ## Genera
  
  There are two genera within the family Tethydidae:
  
  * Melibe Rang, 1829
  * Tethys Linnaeus, 1767 - the type genus,
  
  ### Genera brought into synonymy
  
  * Chioraera Gould, 1852 accepted as Melibe Rang, 1829
  * Fimbria O'Donoghue, 1926: synonym of Tethys Linnaeus, 1767 (invalid: junior homonym of Fimbria Megerle, 1811.)
  * Jacunia de Filippi, 1867 accepted as Melibe Rang, 1829
  * Melibaea synonym of Melibe Rang, 1829
  * Meliboea [sic] : Melibe Rang, 1829 (incorrect subsequent spelling [by Forbes, 1838] of Melibe Rang, 1829)
  * Propemelibe Allan, 1932 accepted as Melibe Rang, 1829
  
  ## Description
  
  Species in this family do not possess a radula.
  
  