Horatia hadei Gittenberger, 1982 Islamia hadei is a species of small freshwater snail with a gill and an operculum, an aquatic gastropod mollusc or micromollusc in the family Hydrobiidae.

[2][3][4] Fauna Europaea recognises two subspecies : Islamia hadei subsp.

[3] Islamia hadei is endemic to Greece, where it where it is only known from a small spring 5 km southwest of Githion.

[2] This species is currently classified by the IUCN as critically endangered and possibly extinct.

The spring it was originally recorded from is being used to provide water for domestic purposes and recent surveys have failed to find any specimens; however, it may still survive in groundwater or a small remnant of the spring.