The three heteronemertean nominal species Ascaris longissima Gunnerus, 1770, Borlasia angliae Oken, 1815, and Nemertes borlasii Cuvier, 1816 have been considered as synonymous, denoting the same to which valid name Lineus longissimus (Gunnerus, 1770) has applied. These are type of genus-group names Sowerby, 1806, Cuver, 1816, respectively, in turn genera family-group Lineidae McIntosh, 1874, Bo...