1936 : synonym of Bathytoma Harris & Burrows, 1891 Narraweena (gastropod) Laseron, 1954 : synonym of Maoritomella Powell, 1942 Oligotoma Bellardi, 1875 : synonym of Asthenotoma Harris & Burrows, 1891 Parabathytoma Shuto, 1961 : synonym of Bathytoma Harris & Burrows, 1891 Riuguhdrillia Oyama, 1951 : synonym of Bathytoma Harris & Burrows, 1891 Vexithara Finlay, 1926 : synonym of Typhlomangelia G.O. Sars, 1878 Viridoturris Powell, 1964 : synonym of Typhlomangelia G.O. Sars, 1878 References External links Gastropods.com: Borsoniidae; accessed : 12 August 2011 Worldwide Mollusc Species Data Base: Borsoniidae Conoidea