Xenobrochus
Cooper 1981
Xenopus
Wagler 1827
Xenorias
Fisher 1913
Xeris
A. Costa 1894
Xestospongia
de Laubenfels 1932
Xesurus
Jordan & Evermann 1896
Xiphophorus
Heckel 1848
Xiphydria
Latreille 1802
Xiphydriola
Semenov 1921
Xyalaspis
Hartig 1843