original description(ofHelix angelica L. Pfeiffer, 1856)Pfeiffer, L. (1856). Descriptions of twenty-five new species of land-shells, from the collection of H. Cuming, Esq. <em>Proceedings of the zoological Society of London.</em> 24 (302): 32; 24 (303): 33-36. London [16 June]., available online athttps://www.biodiversitylibrary.org/page/12860555 page(s): 33 [details]
basis of recordNevill, G. (1878). Mollusca. Scientific Results of the Second Yarkand Mission; based upon the collections and notes of the late Ferdinand Stoliczka Ph.D., 1-21, 1 pl. Calcutta (Office of the Superintendent of Government Printing)., available online athttps://www.biodiversitylibrary.org/page/56816818 page(s): 18 [details]
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