Sudis Cuvier [G.] 1816:180 Fem. Sudis gigas Schinz 1822. Type by subsequent monotypy. Appeared without species. Earliest addition of species probably by Schinz 1822 or Cuvier 1829:327 [ref. 995]. Objectively invalid; preoccupied by Sudis Rafinesque 1810 in fishes. Vastres Valenciennes 1846 later used for Sudis Cuvier. •In the synonymy of Arapaima Müller 1843 -- (Ferraris in Reis et al. 2003:31 [ref. 27061], Kottelat 2013:31 [ref. 32989]). 1°Homonym. Current status: Synonym of Arapaima Müller 1843. Arapaimidae.