The snail genus Lampedusa consists of three species, two of which are endemic to Malta and quite localized in occurrence. The other is Lampedusa lopadusae (Calcara, 1846), which is endemic to the island of - wait for it - Lampedusa. Unlike the Maltese species, this occurs quite commonly on the island and, amongst others, colonizes habitats which its Maltese counterparts don't: bark of trees, grass and so on. The Maltese species seem to prefer limestone patches.
Photograph of a typical aggregation of the snails taken in 2005 by Arie W. Janssen.