MolluscaBase name details
Helix diodonta Say, 1824
1365473 (urn:lsid:marinespecies.org:taxname:1365473)
unaccepted (erroneously treated as a junior homonym by Binney, who establed the replacement name Helix sayii)
Species
Say, T. (1824). Class Mollusca. In: Narrative of an expedition to the source of St. Peter's River, Lake Winnepeek, Lake of the Woods, &c. &c. performed in the year 1823, by order of The Hon. J.C. Calhoun, Secretary of War, under the command of Stephen H. Long, Major U. S. T. E. compiled from the notes of Major Long, Messrs Say, Keating, and Calhoun, by William H. Keating, A. M. &c. H.C. Carey & I. Lea, Philadelphia. 2: 256-266, plates 14-15, available online at http://biodiversitylibrary.org/page/13640689
page(s): 257, pl. 15, fig. 4 [details]
page(s): 257, pl. 15, fig. 4 [details]
MolluscaBase eds. (2021). MolluscaBase. Helix diodonta Say, 1824. Accessed at: https://molluscabase.org/aphia.php?p=taxdetails&id=1365473 on 2025-03-14
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original description
Say, T. (1824). Class Mollusca. In: Narrative of an expedition to the source of St. Peter's River, Lake Winnepeek, Lake of the Woods, &c. &c. performed in the year 1823, by order of The Hon. J.C. Calhoun, Secretary of War, under the command of Stephen H. Long, Major U. S. T. E. compiled from the notes of Major Long, Messrs Say, Keating, and Calhoun, by William H. Keating, A. M. &c. H.C. Carey & I. Lea, Philadelphia. 2: 256-266, plates 14-15, available online at http://biodiversitylibrary.org/page/13640689
page(s): 257, pl. 15, fig. 4 [details]
page(s): 257, pl. 15, fig. 4 [details]