original description(ofCyclostoma plicosum L. Pfeiffer, 1854)Pfeiffer, L. (1854). Descriptions of sixty-six new land shells, from the collection of H. Cuming, Esq. <em>Proceedings of the zoological Society of London.</em> 20 (241) [“1852”]: 56-64; 20 (242) [“1852”]: 65-70. London [22 March] & [23 May]., available online athttps://www.biodiversitylibrary.org/page/30680666 page(s): 61 [details]
basis of recordPfeiffer, L. (1855). A monograph of the genera <i>Realia</i> and <i>Hydrocena</i>. <em>Proceedings of the Zoological Society of London.</em> 22 (278) (“1854”): 304; 22 (279) (“1854”): 305–309 [8. May 1855]., available online athttps://www.biodiversitylibrary.org/page/30747729 page(s): 308 [details]
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