''Cylichnidia ovuliformis'' is a species of land snail in the family Ferussaciidae. It is

endemic Endemism is the state of a species being found in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found els ...

Madeira ) , anthem = ( en, "Anthem of the Autonomous Region of Madeira") , song_type = Regional anthem , image_map=EU-Portugal_with_Madeira_circled.svg , map_alt=Location of Madeira , map_caption=Location of Madeira , subdivision_type=Sovereign st ...

, where it is known only from

Porto Santo Island Porto Santo Island () is a Portuguese island northeast of Madeira Island in the North Atlantic Ocean; it is the northernmost and easternmost island of the archipelago of Madeira, located in the Atlantic Ocean west of Europe and Africa. The muni ...

. The snail has been recorded at five sites on mountain slopes on the island. It lives on the ground, often under rocks, logs, and leaf litter. In some places it is threatened by habitat disturbance from nearby plantations.

References

Ferussaciidae Molluscs of Madeira Endemic fauna of Madeira Porto Santo Island Gastropods described in 1831 Taxonomy articles created by Polbot {{Ferussaciidae-stub