Nemertes Nemertes gracilis Johnston, 1837
Nemertes gracilis Thompson, 1841
Prostoma gracilis Thompson, 1843
Omatoplea gracilis Johnston, 1865
Ommatoplea gracilis McIntosh, 1868
Eunemertes gracilis Jameson, 1898
Emplectoneema gracile Southern, 1913
Eunemertes gracile Barrett and Yonge, 1958
Emplectonema gracile King, 1911