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, 1827
- Cubaedomus Thiele, 1928
- Hemisinus Swainson, 1840
- Longiverena Pilsbry & Olsson, 1935
- Pachymelania E. A. Smith, 1893