MolluscaBase name details
original description
(of Helix isis L. Pfeiffer, 1860) Pfeiffer, L. (1860). Description of thirty-six new species of land shells from Mr. H. Cuming's Collection. <em>Proceedings of the Zoological Society of London.</em> 28(1): 133–141, pl. 50, pl. 51 figs 4–9. [31 May]., available online at https://biodiversitylibrary.org/page/12866659
page(s): 133, plate 50, fig. 8. [details]
basis of record
Rensch, I. (1935). Neue Landmollusken aus dem Bismarckarchipel. IV. <em>Zoologischer Anzeiger.</em> 110(11-12): 279-283.
page(s): 280 [details] Available for editors [request]
additional source
Rensch, I. (1937). Systematische und tiergeographische Untersuchungen über die Landschneckenfauna des Bismarck-Archipels II. <em>Archiv für Naturgeschichte, Neue Folgen.</em> 6: 526-644.
page(s): 541 [details] Available for editors [request]