Dodatak:Popis vrpčara, X
Xenistum Blanchard, 1845
uredi- Sinonim Xenistum valenciennaei = Malacobdella grossa (Müller, 1776)
Xenoarmaueria Tshernyshev in Chernyshev, 1992
uredi- Xenoarmaueria acoeca (Korotkevich, 1955)
Animalia → Nemertea → Enopla → Hoplonemertea → Polystilifera → Pelagica → Armaueriidae