MolluscIreland - land and freshwater
  • Vallonia pulchella (O. F. Müller 1774) Smooth grass snail
Click on the image to enlarge it in a new window
Vallonia pulchella
© Dr Roy Anderson

Map hosted by the National Biodiversity Data Centre, Waterford
To view the species profile on Biodiversity Maps and access the live map, please click on the map.


Very similar to V. cf. excentrica but shell slightly more opaque, chalky and with slightly more obvious striae. The distinct rim to the outer lip is a good character for distinguishing it in the field. Local across Ireland in wet places.

Key characteristics

  • A very small, flattened, ivory-white shell
  • Shell slightly more opaque and chalky than V. cf. excentrica and striae more obvious
  • Identifiable on the distinct rim of the expanded outer lip


2-2.3 mm.

World Distribution

Similar to that of Vallonia cf. excentrica. Distribution type: Circumpolar Wide-temperate (66).

GBIF distribution map [open in new tab]

Irish Distribution

Fairly common on the margins of wetlands on the Carboniferous limestone of the central plain but much more local northwards.


  • Differs from other Vallonia in being more hygrophilous
  • Occurs mainly in pasture on the floodplains of lakes and rivers
  • Restricted to large lake systems or to areas of base-rich rocks

Red List status

  • Vulnerable (VU).

Wikipedia link

Wikipedia page for Vallonia pulchella

 Anderson, R., (2016). Vallonia pulchella (O. F. Müller 1774). [In] MolluscIreland. Accessed on 2024-03-02.