original description
(of Helix lisbonensis L. Pfeiffer, 1846) Pfeiffer, L. (1846). Symbolae ad historiam Heliceorum. Sectio tertia. 1–100. Cassellis: Th. Fischer [< 26 August]., available online at https://biodiversitylibrary.org/page/12254325
page(s): 68 [details]
original description
(of Helix ponentina Morelet, 1845) Morelet, A. (1845). <i>Description des mollusques terrestres et fluviatiles du Portugal</i>. Baillière, Paris. i-vii + 1-115 [+ 1]., 14 pls. , available online at https://www.biodiversitylibrary.org/bibliography/12994
page(s): 65, pl. 6, fig. 4 [details]
original description
(of Helix labiosa Locard, 1899) Locard, A. (1899). Conchyliologie portugaise: coquilles terrestres des eaux douces et saumâtres. <em>Archives du Muséum d'Histoire Naturelle de Lyon.</em> 7(1): i-iv, 1-303., available online at http://biodiversitylibrary.org/page/9627379
page(s): 88-89 [details]
original description
(of Helix aporina Castro, 1887) da Silva e Castro, J. (1887). Contributions à la faune malacologique du Portugal (suite). II. <em>Jornal de Sciencias Mathematicas, Physicas e Naturaes, Academia Real das Sciencias de Lisboa.</em> 44: 232-249., available online at https://www.biodiversitylibrary.org/page/3418043
page(s): 237-238 [details]
original description
(of Helix utriculina Locard, 1899) Locard, A. (1899). Conchyliologie portugaise: coquilles terrestres des eaux douces et saumâtres. <em>Archives du Muséum d'Histoire Naturelle de Lyon.</em> 7(1): i-iv, 1-303., available online at http://biodiversitylibrary.org/page/9627379
page(s): 128-129 [details]
basis of record
Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16th, 2017. [details]
From editor or global species database