Metaniidae
Metaniidae is a family of freshwater sponges, with five genera and 27 species:Acalle Gray, 1867
- * Acalle recurvata Corvomeyenia Weltner, 1913
- * Corvomeyenia carolinensis Harrison, 1971
- * Corvomeyenia epilithosa Volkmer-Ribeiro, Rosa-Barbosa & Machado, 2005
- * Corvomeyenia everetti
- * Corvomeyenia thumi Drulia Gray, 1867
- * Drulia batesii
- * Drulia brownii
- * Drulia conifera Bonetto & Ezcurra de Drago, 1973
- * Drulia cristata
- * Drulia cristinae Volkmer-Ribeiro, Drago, Machado & Sabaj, 2017
- * Drulia ctenosclera Volkmer & Mothes, 1981
- * Drulia geayi
- * Drulia uruguayensis Bonetto & Ezcurra de Drago, 1969Houssayella Bonetto & Ezcurra de Drago, 1966
- * Houssayella iguazuensis Bonetto & Ezcurra de Drago, 1966Metania Gray, 1867
- * Metania fittkaui Volkmer-Ribeiro, 1979
- * Metania godeauxi
- * Metania kiliani Volkmer-Ribeiro & Costa, 1992
- * Metania madagascariensis Manconi & Pronzato, 2015
- * Metania melloleitaoi Machado, 1948
- * Metania ovogemata Stanisic, 1979
- * Metania pottsi
- * Metania reticulata
- * Metania rhodesiana Burton, 1938
- * Metania spinata
- * Metania subtilis Volkmer, 1979
- * Metania vesparioides
- * ''Metania vesparium''