Sinum

Sinum is a genus of predatory sea snails, marine gastropod mollusks in the subfamily Sininae of the family Naticidae, the moon snails.

Most naticids have shells that are globular, but the shell of species in the genus Sinum is flattened to some extent, some being so flattened that they are ear-shaped.

Distribution
This marine species is cosmopolitan.

Species
Species within the genus Sinum include:
 * Sinum bifasciatum (Récluz, 1851)
 * Sinum concavum (Lamarck, 1822)
 * Sinum cortezi Burch & Burch, 1964
 * Sinum cymba (Menke, K.T., 1828)
 * Sinum debile (Gould, 1853)
 * Sinum delesserti (Récluz in Chenu, 1843)
 * Sinum diauges Kilburn, 1974
 * Sinum eximium (Reeve, 1864)
 * † Sinum faviai Lozouet, 2001
 *  Sinum grayi G. P. Deshayes, 1843
 * Sinum haliotoideum (Linnaeus, 1758)
 * Sinum incisum (Reeve, 1864)
 * † Sinum infirmum Marwick, 1924
 * Sinum japonicum (Lischke, 1872)
 * Sinum javanicum (Gray, 1834)
 * Sinum keratium Dall, 1919
 * Sinum laevigatum (Lamarck, 1822)
 * Sinum maculatum (Say, 1831)
 * † Sinum marwicki Laws, 1930
 * Sinum minus (Dall, 1889)
 * Sinum nanhaiense S.-P. Zhang, 2009
 * Sinum neritoideum (Linnaeus, 1758)
 * Sinum noyesii Dall, 1903
 * Sinum perspectivum (Say, 1831)
 * Sinum planulatum (Récluz, 1843)
 * Sinum quasimodoides Kilburn, 1976
 * Sinum sanctijohannis (Pilshry & Lowe, 1932)
 * Sinum scopulosum (Conrad, 1849)
 * Sinum vittatum Zhang, 2008
 * Sinum zonale (Quoy & Gaimard, 1832)

The Indo-Pacific Molluscan database also mentions the following species with names in current use
 * Sinum unifasciatus Récluz, 1843
 * Species brought into synonymy:
 * Sinum acuminatus (Adams & Reeve, 1850) : synonym of Conuber conicum (Lamarck, 1822)
 * Sinum californicum I. Oldroyd, 1917 : synonym of Sinum scopulosum (Conrad, 1849)
 * Sinum cuvierianum (Récluz, 1844) : synonym of Vanikoro cuvieriana (Récluz, 1844)
 * Sinum fuscum Röding, 1798 : synonym of Sinum haliotoideum (Linnaeus, 1758)
 * Sinum insculptus Adams & Reeve, 1850 : synonym of Sinum javanicum (Gray, 1834)
 * Sinum latifasciatus Adams & Reeve, 1850 : synonym of Sinum neritoideum (Linnaeus, 1758)
 * Sinum minor [sic]: synonym of Sinum minus (Dall, 1889)
 * Sinum nanhaiensis S.-P. Zhang, 2009 : synonym of Sinum nanhaiense S.-P. Zhang, 2009 (wrong gender agreement of specific epithet)
 * Sinum papilla (Gmelin, 1791) : synonym of Eunaticina papilla (Gmelin, 1791)
 * Sinum parvus (E. A. Smith, 1895) : synonym of Sinum neritoideum (Linnaeus, 1758)
 * Sinum petitianus Récluz, 1843 : synonym of Sigaretus petitianus Récluz in Chenu, 1843 (taxon inquirendum)
 * Sinum pazianum Dall, 1919 : synonym of Sinum debile (Gould, 1853)
 * Sinum planatum: synonym of Sinum planulatum (Récluz, 1843)
 * Sinum sinuatus Récluz, 1851 : synonym of Sigaretus sinuatus Récluz, 1851 (taxon inquirendum)
 * Sinum tener (Smith, 1894) : synonym of Eunaticina papilla (Gmelin, 1791)
 * Sinum weberi (Bartsch, 1918) : synonym of Sinum incisum (Reeve, 1864)