MolluscaBase taxon details
original description
(of Helix (Helicella) polymorpha R. T. Lowe, 1831) Lowe, R. T. (1831). Primitiae faunae et florae Maderae et Portus Sancti; sive species quaedam novae vel hactenus minus rite cognitae animalium et plantarum in his insulis degentium breviter descriptae. <em>Transactions of the Cambridge Philosophical Society.</em> 4 (1): 1-70, pl. 1-6. Cambridge., available online at https://www.biodiversitylibrary.org/page/13265840
page(s): 54 [details]
original description
(of Helix (Helicella) polymorpha var. irrasa R. T. Lowe, 1831) Lowe, R. T. (1831). Primitiae faunae et florae Maderae et Portus Sancti; sive species quaedam novae vel hactenus minus rite cognitae animalium et plantarum in his insulis degentium breviter descriptae. <em>Transactions of the Cambridge Philosophical Society.</em> 4 (1): 1-70, pl. 1-6. Cambridge., available online at https://www.biodiversitylibrary.org/page/13265840
page(s): 54, pl. 6 fig. 11 [details]
original description
(of Helix subtetrica Mabille, 1884) Mabille, J. (1884). Sur quelques espèces de mollusques terrestres. <em>Bulletin de la Société Philomathique de Paris.</em> 8: 39-53., available online at https://www.biodiversitylibrary.org/page/31636771
page(s): 42 [details]