MolluscaBase name details
original description
(of Helix vulgata var. saxipotens Wollaston, 1878 †) Wollaston, T.V. (1878). Testacea Atlantica or the land and freshwater shells of the Azores, Madeiras, Salvages, Canaries, Cape Verdes, and Saint Helena. i-xi, [1], 1-588, 1-16. London. (Reeve)., available online at https://www.biodiversitylibrary.org/page/18928631
page(s): 117, 119 [details]