Pusillina is a genus of minute sea snails, marine gastropod mollusks or micromollusks in the family Rissoidae. Species Species within the genus Pusillina include: Pusillina amblia (Watson, 1886) † Pusillina aquensis Lozouet, 2015 Pusillina benzi (Aradas & Maggiore, 1844) † Pusillina dollfusi Landau, Ceulemans & Van Dingenen, 2018 Pusillina ehrenbergii (Philippi, 1844) Pusillina fuscapex Gofas, 2007 † Pusillina gallica Landau, Ceulemans & Van Dingenen, 2018 † Pusillina grateloupi (Vergneau-Saubade, 1968) Pusillina hadra Bouchet & Warén, 1993 Pusillina harpa (A. E. Verrill, 1880) Pusillina harpula Gofas, 2007 Pusillina inconspicua (Alder, 1844) † Pusillina kazakhstanica Amitrov, 2010 † Pusillina lavallei Seguenza, 1903 Pusillina lineolata (Michaud, 1832) Pusillina marginata (Michaud, 1832) Pusillina metivieri Bouchet & Warén, 1993 Pusillina minialba Segers, Swinnen & De Prins, 2009 Pusillina munda (Monterosato, 1884) † Pusillina nilae Bogi & Chirli, 2004 Pusillina obscura (Philippi, 1844) Pusillina philippi (Aradas & Maggiore, 1844) Pusillina plicosa (E. A. Smith, 1875) † Pusillina protocarinata Lozouet, 2015 Pusillina radiata (Philippi, 1836) Pusillina sarsii (Lovén, 1846) Pusillina testudae (Verduin, 1979) Pusillina tumidula (G. O. Sars, 1878) Species brought into synonymy Pusillina africana (Thiele, 1925): synonym of Haurakia africana (Thiele, 1925) Pusillina amica (Thiele, 1925): synonym of Haurakia amica (Thiele, 1925) Pusillina angulata (Hedley, 1907): synonym of Haurakia angulata (Hedley, 1907) Pusillina aupouria (Powell, 1937): synonym of Haurakia aupouria Powell, 1937: synonym of Alvania (Linemera) aupouria (Powell, 1937) represented as Alvania aupouria (Powell, 1937) Pusillina averni Ponder & Worsfold, 1994: synonym of Haurakia averni (Ponder & Worsfold, 1994) † Pusillina buccella (Marwick, 1931) : synonym of † Haurakia buccella Marwick, 1931 † Pusillina chemnitzia (Laws, 1948) : synonym of † Haurakia chemnitzia Laws, 1948 Pusillina crassicosta (Powell, 1955): synonym of Haurakia crassicosta Powell, 1955 Pusillina denseclathrata (Thiele, 1925): synonym of Haurakia denseclathrata (Thiele, 1925) Pusillina discrepans (Tate & May, 1900): synonym of Haurakia discrepans (Tate & May, 1900) Pusillina diversa (F. Nordsieck, 1972): synonym of Pusillina inconspicua (Alder, 1844) Pusillina dolium (Nyst, 1845): synonym of Pusillina philippi (Aradas & Maggiore, 1844) Pusillina ehrenbergii (Philippi, 1844): synonym of Pusillina ehrenbergii (Philippi, 1844) (incorrect subsequent spelling) Pusillina finlayi (Powell, 1937): synonym of Haurakia finlayi Powell, 1937 Pusillina gilva (W. H. Turton, 1932): synonym of Haurakia gilva (W. H. Turton, 1932) Pusillina hamiltoni (Suter, 1898): synonym of Haurakia hamiltoni (Suter, 1898) Pusillina hertzogi (Thiele, 1925): synonym of Haurakia hertzogi (Thiele, 1925) Pusillina huttoni (Suter, 1898): synonym of Haurakia huttoni (Suter, 1898) Pusillina imitator (Thiele, 1930): synonym of Haurakia