MolluscaBase name details
original description
(of Helix operculina A. Gould, 1859) Gould, A. A. (1859). [Descriptions of shells collected by the North Pacific Exploring Expedition]. <em>Proceedings of the Boston Society of Natural History.</em> 6: 422–426., available online at https://biodiversitylibrary.org/page/9493602 page(s): 423 [details]
basis of record
Chiba, S. (2009). Morphological divergence as a result of common adaptation to a shared environment in land snails of the genus <i>Hirasea</i>. <em>Journal of Molluscan Studies.</em> 75: 253-259. [details]
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