original description
Germain, L. (1931). L'origine et l'évolution de la faune malacologique de l'ile de Sainte-Hélène. <em>Comptes Rendus du Congrès des Sociétés Savantes (1929), Section des Sciences.</em> 161-180., available online at https://gallica.bnf.fr/ark:/12148/bpt6k5426534w/f163.item
page(s): 169 [details]
source of synonymy
Schileyko, A. A. (1998). Treatise on Recent terrestrial pulmonate molluscs. Part 2. Gastrocoptidae, Hypselostomatidae, Vertiginidae, Truncatellinidae, Pachnodidae, Enidae, Sagdidae. <em>Ruthenica.</em> Supplement 2: 129-261. Moskva [November].
page(s): 181 [details]
From editor or global species database
Nomenclature Crowley & Pain [1977, Musée Royal de l'Afrique Centrale, Annales, Série in 8o, Sciences Zoologiques, 220: 551] designated Helix helena Quoy & Gaimard, 1832, as type species, but they treated Helenopachnodus as a synonym of Chilonopsis, and thereby did not make it an available name. [details]