Meioceras

Meioceras is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Caecidae.

Species
Species within the genus Meioceras include:
 * Meioceras cornucopiae Carpenter, 1858
 * Meioceras cubitatum Folin, 1868
 * † Meioceras mateldae Selli, 1974
 * Meioceras nitidum (Stimpson, 1851)
 * Meioceras tumidissimum de Folin, 1869
 * Species brought into synonymy:
 * Meioceras bermudezi Pilsbry & Aguayo, 1934 : synonym of Meioceras cornucopiae Carpenter, 1859
 * Meioceras bitumidum de Folin, 1869 : synonym of Meioceras nitidum (Stimpson, 1851)
 * Meioceras boucheti Pizzini & Raines, 2011 : synonym of Mauroceras boucheti (Pizzini & Raines, 2011) (original combination)
 * Meioceras carpenteri de Folin, 1869 : synonym of Meioceras nitidum (Stimpson, 1851)
 * Meioceras cingulatum Dall, 1892 : synonym of Meioceras nitidum (Stimpson, 1851)
 * Meioceras constrictum Pilsbry & Aguayo, 1933 : synonym of Meioceras cornucopiae Carpenter, 1859
 * Meioceras contractum de Folin, 1874 : synonym of Meioceras nitidum (Stimpson, 1851)
 * Meioceras cornubovis Carpenter, 1859 : synonym of Meioceras cornucopiae Carpenter, 1859
 * Meioceras coxi de Folin, 1869 : synonym of Meioceras nitidum (Stimpson, 1851)
 * Meioceras crossei de Folin, 1869 : synonym of Meioceras nitidum (Stimpson, 1851)
 * Meioceras deshayesi de Folin, 1869 : synonym of Meioceras nitidum (Stimpson, 1851)
 * Meioceras fischeri de Folin, 1870 : synonym of Meioceras nitidum (Stimpson, 1851)
 * Meioceras imiklis de Folin, 1870 : synonym of Meioceras nitidum (Stimpson, 1851)
 * Meioceras kajiyamai Habe, 1963 : synonym of Mauroceras kajiyamai (Habe, 1963) (original combination)
 * Meioceras legumen (Hedley, 1899) : synonym of Mauroceras legumen (Hedley, 1899)
 * Meioceras leoni Bérillon, 1874 : synonym of Meioceras nitidum (Stimpson, 1851)
 * Meioceras mariae de Folin, 1881 : synonym of Meioceras cornucopiae Carpenter, 1859
 * Meioceras moreleti de Folin, 1869 : synonym of Meioceras nitidum (Stimpson, 1851)
 * Meioceras rhinoceros Pizzini, Raines & Vannozzi, 2013 : synonym of Mauroceras rhinoceros (Pizzini, Raines & Vannozzi, 2013) (original combination)
 * Meioceras sandwichense de Folin, 1881 : synonym of Mauroceras sandwichense (de Folin, 1881) (original combination)
 * Meioceras subinflexum de Folin, 1869 : synonym of Meioceras nitidum (Stimpson, 1851)
 * Meioceras tenerum de Folin, 1869 : synonym of Meioceras cubitatum de Folin, 1868
 * Meioceras undulosum de Folin, 1869 : synonym of Meioceras nitidum (Stimpson, 1851)