of having a shell agglutinating sand-grains]. It also contradicts Houbrick (1993) who holds the Bittiinae as a subfamily of the Cerithiidae. It seems premature to reflect this scheme, which upsets current usage, in the WoRMS classification until shell characters are cross-checked with at least another independent (e.g. molecular) set of characters. Argyropeza Melvill & Standen, 1901 Bittiolum Cossmann, 1906 Bittium Gray, 1847 - type genus of the subfamily Bittiinae, synonym: Dahlakia Biggs, 1971 Cacozeliana Strand, 1928 Cassiella Gofas, 1987 Cerithidium Monterosato, 1884 Ittibittium Houbrick, 1993 Limatium Strong & Bouchet, 2018 Lirobittium Bartsch, 1911 Neostylidium Doweld, 2013 Pictorium Strong & Bouchet, 2013 Varicopeza Gründel, 1976 Zebittium Finlay, 1926 Cerithiinae Fleming, 1822 (synonyms Colininae Golikov & Starobogatov, 1987; Rhinoclavinae Gründel, 1982) Cerithioclava Bruguière, 1789 Cerithium Bruguière, 1789 - type genus of the subfamily Cerithiinae, synonyms: Bayericerithium Petuch, 2001; Contumax Hedley, 1899; Thericium Monterosato, 1890 Clavocerithium Cossmann, 1920 Clypeomorus Jousseaume, 1888 Colina H. Adams & A. Adams, 1854 Fastigiella Reeve 1848 Gourmya Bayle, 1884 Liocerithium Tryon, 1887 Pseudovertagus Vignal, 1904 Rhinoclavis Swainson, 1840 - synonyms: Clava Fabricius, 1823; Ochetoclava Woodring, 1928; Proclava Thiele, 1929; Vertagus Iredale, 1931 Royella Iredale, 1912 subfamily ? † Bezanconia Bayle in Fischer, 1884 Genera brought into synonymy Subfamily Colininae Golikov & Starobogatov, 1987 : synonym of Cerithiinae Fleming, 1822 Subfamily Rhinoclavinae Gründel, 1982: synonym of Cerithiinae Fleming, 1822 Subfamily † Tiaracerithiinae Bouniol, 1981: synonym of Batillariidae Thiele, 1929 † Elassum Woodring, 1946: synonym of Alabina Dall, 1902 Stylidium Dall, 1907: synonym of Neostylidium Doweld, 2013 Cacozelia Iredale, 1924: synonym of Cacozeliana Strand, 1928 Cerithiolum Tiberi, 1869: synonym of Bittium Gray, 1847 Clathrofenella Kuroda & Habe, 1954: synonym of Cerithidium Monterosato, 1884 Dahlakia Biggs, 1971: synonym ofBittium Gray, 1847 Inobittium Monterosato, 1917: synonym of Bittium Gray, 1847 Manobittium Monterosato, 1917: synonym of Bittium Gray, 1847 Rasbittium Gründel, 1976: synonym of Bittium Gray, 1847 Stylidium Dall, 1907: synonym of Neostylidium Doweld, 2013 Bayericerithium Petuch, 2001: synonym of Cerithium Bruguière, 1789 Clava Fabricius, 1823: synonym of Rhinoclavis Swainson, 1840 Contumax Hedley, 1899: synonym of Cerithium Bruguière, 1789 Drillocerithium Monterosato, 1910: synonym of Cerithium Bruguière, 1789 Gladiocerithium Monterosato, 1910: synonym of Cerithium Bruguière, 1789 Gourmierium Jousseaume, 1894: synonym of Cerithium Bruguière, 1789 Hirtocerithium Monterosato, 1910: synonym of Cerithium Bruguière, 1789 Liocerithium Sacco, 1894: synonym of Liocerithium Tryon, 1887 Lithocerithium Monterosato, 1910: synonym of Cerithium Bruguière, 1789 Ochetoclava Woodring, 1928: synonym of Rhinoclavis Swainson, 1840 Proclava Thiele, 1929: synonym of Rhinoclavis (Proclava) Thiele,