Fontigens

Fontigens is a genus of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Hydrobiidae.

Species
Species within the genus Fontigens include:
 * Fontigens aldrichi (Call & Beecher, 1886)
 * Fontigens antroecetes (Hubricht, 1940)
 * Fontigens binneyana Hannibal, 1912
 * Fontigens bottimeri (B.Walker, 1925)
 * Fontigens cryptica Hubricht, 1963
 * Fontigens holsingeri Hubricht, 1976 - Tapered cavesnail
 * Fontigens morrisoni Hershler, Holsinger & Hubricht, 1990
 * Fontigens nickliniana (I.Lea, 1838)
 * Fontigens orolibas Hubricht, 1957
 * Fontigens proserpina (Hubricht, 1940)
 * Fontigens tartarea Hubricht, 1963
 * Fontigens turritella Hubricht, 1976 - Greenbrier cavesnail