Suborder Spumellaria Ehrenberg, 1875 see Class Spumellaria Ehrenberg, 1875 Family Actinommidae Haeckel, 1862 Subfamily Actinomminae Takahashi, 1991 see Family Actinommidae Haeckel, 1862 Genus Xiphatractus Haeckel, 1887 1 Xiphatractus pluto (Haeckel) see Stylatractus pluto (Haeckel, 1887)