MolluscaBase name details
Helix alternata Say, 1817
1365087 (urn:lsid:marinespecies.org:taxname:1365087)
unaccepted (original combination)
Species
- Variety Helix alternata var. carinata A. Férussac, 1832 accepted as Anguispira alternata (Say, 1817)
- Variety Helix alternata var. costata J. Lewis, 1871 accepted as Anguispira alternata (Say, 1817) (junior synonym)
- Variety Helix alternata var. fergusoni Bland, 1862 accepted as Anguispira fergusoni (Bland, 1862)
Say, T. (1817). Conchology. - In: Nicholson, W.: American edition of the British Encyclopedia, or, dictionary of arts and sciences comprising an accurate and popular view of the present improved state of human knowledge. First Edition, A-3 - C-6 [= 1-20], pl. [1-4].
page(s): [unpaginated], pl. 1, fig. 2 [details]
page(s): [unpaginated], pl. 1, fig. 2 [details]
MolluscaBase eds. (2025). MolluscaBase. Helix alternata Say, 1817. Accessed at: https://www.molluscabase.org/aphia.php?p=taxdetails&id=1365087 on 2025-05-12
The webpage text is licensed under a Creative Commons
Attribution 4.0 License
original description
Say, T. (1817). Conchology. - In: Nicholson, W.: American edition of the British Encyclopedia, or, dictionary of arts and sciences comprising an accurate and popular view of the present improved state of human knowledge. First Edition, A-3 - C-6 [= 1-20], pl. [1-4].
page(s): [unpaginated], pl. 1, fig. 2 [details]
basis of record InvertEBase. (2018). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase (InvertEBase.org) project. [details]
additional source Hodgson, C. S. (1894). The rate of growth of helices. <em>The Nautilus.</em> 8(7): 82-83., available online at https://www.biodiversitylibrary.org/page/43044678 [details]
additional source Lind, G. D. (1895). Dead snails. <em>The Nautilus.</em> 8(9): 106., available online at https://www.biodiversitylibrary.org/page/43044704 [details]
additional source Ormsbee, C. C. (1896). Influence of environment upon the form and color of <i>Helix alternata</i>. <em>The Nautilus.</em> 10(6): 63-64., available online at https://www.biodiversitylibrary.org/page/1818919 [details]
page(s): [unpaginated], pl. 1, fig. 2 [details]
basis of record InvertEBase. (2018). Authority files of U.S. and Canadian land and freshwater mollusks developed for the InvertEBase (InvertEBase.org) project. [details]
additional source Hodgson, C. S. (1894). The rate of growth of helices. <em>The Nautilus.</em> 8(7): 82-83., available online at https://www.biodiversitylibrary.org/page/43044678 [details]
additional source Lind, G. D. (1895). Dead snails. <em>The Nautilus.</em> 8(9): 106., available online at https://www.biodiversitylibrary.org/page/43044704 [details]
additional source Ormsbee, C. C. (1896). Influence of environment upon the form and color of <i>Helix alternata</i>. <em>The Nautilus.</em> 10(6): 63-64., available online at https://www.biodiversitylibrary.org/page/1818919 [details]
