Gibbula is a genus of small sea snails, marine gastropod molluscs in the subfamily Cantharidinae of the family Trochidae, the top snails. Taxonomy Affenzeller et al. (2017) have shown than several Mediterranean species hitherto assigned to Gibbula were forming a separate clade and should be assigned to the genus Steromphala. They included in the restricted Gibbula clade the species G. magus (type species), G. fanulum and G. ardens. However many other species were not taken into account in this paper and will remain listed in WoRMS under Gibbula until their phylogenetic position is assessed, but possibly do not belong to the restricted Gibbula clade. Distribution The species in this genus occur through all seas, except on the coast of the American continent. Description The cyrtoconoid (= approaching a conical shape but with convex sides) shell is usually perforate or umbilicate. The spire is moderately elevated. The whorls are often gibbous or tuberculose beneath the sutures, smooth or spirally ribbed. The last whorl is generally angular at the periphery. The aperture is subrhomboidal. The columella is oblique, dentate or subsinuous at the base. The outer lip is acute. The central tooth and the lateral teeth of the radula have well-developed denticulate cusps. The outer lateral teeth are wider. Species Species within the genus Gibbula include. Gibbula ahena Preston, 1908 Gibbula albida Gmelin, 1791 † Gibbula anodosula Sacco, 1896 Gibbula ardens Von Salis, 1793) Gibbula aurantia Nordsieck, 1975 Gibbula beckeri G.B. Sowerby III, 1901 Gibbula benzi (Krauss, 1848) Gibbula blanfordiana G. Nevill & H. Nevill, 1869 † Gibbula buchi Harzhauser and Kowalke, 2002 (Dubois, 1831) Gibbula candei d'Orbigny, 1844 Gibbula capensis Gmelin, 1791 Gibbula cicer (Menke, 1844) † Gibbula clanculiforma Landau, Van Dingenen & Ceulemans, 2017 Gibbula clandestina Rolán & Templado, 2001 † Gibbula conicomagus Landau, Van Dingenen & Ceulemans, 2017 Gibbula corallioides Locard, 1898 † Gibbula dalli Ihering, 1897 Gibbula delgadensis Nordsieck, 1982 Gibbula denizi Rolán & Swinnen, 2013 Gibbula deversa Milaschewitsch, 1916 Gibbula drepanensis Brugnone, 1873 Gibbula dupontiana G. Nevill & H. Nevill, 1869 Gibbula eikoae Tagaro & Dekker, 2006 † Gibbula euomphala (Philippi, 1836) Gibbula fanulum Gmelin, 1791 † Gibbula filiformis (de Rayneval, Van den Hecke & Ponzi, 1854) Gibbula guishanensis Wen-Der Chen & I-Feng Fu, 2008 Gibbula guttadauri Philippi, 1836 Gibbula hera Bartsch, 1915 Gibbula hisseyiana (Tenison-Woods, 1876) Gibbula houartiPoppe, Tagaro & Dekker, 2006 Gibbula joubini Dautzenberg, 1910 Gibbula leucophaea (Philippi, 1836) Gibbula loculosa Gould, 1861 (synonym of