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The shell of the decollate snail is long and roughly cone-shaped. It grows to approximately 40 mm in length, and upon reaching mature size, grinds or chips off the end of its own shell by moving its body roughly against hard surfaces, so that the shell takes on a decollate shape, tapering to a blunt end.
This species is native to the Mediterranean excluding south-east Mediterranean. It is introduced in Israel and in Egypt.since Roman times.It has been introduced into North America, including Phoenix and Glendale, Arizona, and other areas as a biological control agent, in hopes of controlling populations of the brown garden snail. Great Britain, as a "hothouse alien"
Spotted in Algarve,in Santa Bárbara de Neche