original description
Hupé H. (1853). Observations sur l'<i>Helix pellis-serpentis</i>, Chemn., et descriptions d'espèces nouvelles du genre Hélice. <em>Revue et Magasin de Zoologie.</em> ser. 2, 5: 296-303, pls 9-11., available online at https://www.biodiversitylibrary.org/page/13711804
page(s): 302, pl. 11 fig. 2 [details]
additional source
Breure, A. S. H., Roosen, M. T. & Ablett, J. D. (2022). Land and freshwater molluscs of mainland Ecuador: an illustrated checklist. <em>Iberus.</em> 40(1): 1-290.
page(s): 223 [details]
From editor or global species database