About Vallonia excentrica Sterki, 1893
Vallonia excentrica Sterki, 1893, commonly known as the eccentric vallonia, is a species of very small air-breathing land snail. It is a terrestrial pulmonate gastropod mollusk that belongs to the family Valloniidae. This species has a native Holarctic distribution, and has also been introduced to other regions outside this native range. Documented occurrences of the species include: Africa (Saint Helena); Europe (Great Britain, Ireland, Czech Republic, Ukraine); Australia (introduced to south-eastern Australia, as well as Lord Howe Island and Norfolk Island); and North America (British Columbia, Canada).