MolluscaBase taxon details
original description
(of Helix eugenia L. Pfeiffer, 1853) Pfeiffer, L. (1853). Diagnosen neuer Heliceen. <em>Zeitschrift für Malakozoologie. Cassel (Theodor Fischer).</em> 10 (4): 51-58 [31 März 1853]; 10 (10): 145-151 [30 November 1853]., available online at https://www.biodiversitylibrary.org/page/16300951
page(s): 148 [details]
original description
(of Helix calypso Benoit, 1859) Benoit, L. (1857-1862). Illustrazione sistematica critica iconografica de'testacei estramarini della Sicilia ulteriore e delle isole circostanti. I-XVI, 1-248, pls 1-9, 11-12 [part 1: pp. I-XVI, 1-52 (1857); Part 2: pp. 53-116 (1857); Part 3: pp. 117-180 (1859); Part 4: pp. 181-248 (1862)]. Napoli. (Nobile)., available online at https://www.biodiversitylibrary.org/page/13182364
page(s): 125, pl. 2, fig. 18 [details]
basis of record
Bank, R. A.; Neubert, E. (2017). Checklist of the land and freshwater Gastropoda of Europe. Last update: July 16th, 2017. [details]