MolluscaBase taxon details
original description
(of Helix pachystoma Hombron & Jacquinot, 1841) Hombron, J. B. & Jacquinot, C. H. (1841). Description de quelques mollusques provenant de la campagne de l'Astrolabe et de la Zélée. <em>Annales des Sciences Naturelles, ser. 2, Zoologie.</em> 16: 62-65, 190-192., available online at https://www.biodiversitylibrary.org/page/35730481
page(s): 62 [details]
original description
(of Helix sowerbyana L. Pfeiffer, 1841) Pfeiffer, L. (1841). <i>Symbolae ad historiam Heliceorum</i>. Sectio prima [vol. 1]. Kassel: Th. Fischer. 88 pp. , available online at https://biodiversitylibrary.org/page/12254132
page(s): 36 [details]