Hemisinidae

Hemisinidae is a family of snails in the superfamily Cerithioidea. They occur in freshwater and brackish environments on all continents except Australia and Antarctica.

Genera

There are five extant genera:Aylacostoma Spix, 1827Cubaedomus Thiele, 1928Hemisinus Swainson, 1840Longiverena Pilsbry & Olsson, 1935Pachymelania E. A. Smith, 1893
There are also four genera only known from fossils:

† Axonella Pacaud, Lhomme & Renaud, 2021
† Gantmelania Kowalke, 2001
† Pyrgulifera Meek, 1871
† Stephaniphera S. Schneider, Kollmann & Pickford, 2020