original description(ofHelix retardata J. C. Cox, 1870)Cox, J. C. (1870). Descriptions of seventeen new species of land shells from the South Sea Islands, in the cabinet of Mr John Brazier of Sydney. <em>Proceedings of the Zoological Society of London.</em> 1870: 81-85., available online athttps://www.biodiversitylibrary.org/page/28554883 page(s): 84 [details]
basis of recordSolem, A. (1959). Systematics and zoogeography of the land and fresh-water Mollusca of the New Hebrides. <em>Fieldiana Zoology.</em> 4(3): 1-359., available online athttps://www.biodiversitylibrary.org/page/2773210 page(s): 100 [details]
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