original descriptionClessin, S. (1877). Die Mollusken der Tiefenfauna unserer Alpenseen. <em>Malakozoologische Blätter.</em> 24: 159-185, plate 3., available online athttp://biodiversitylibrary.org/page/15854830 page(s): 172, pl.3, figs. 2-4 [details]
From editor or global species database
Type locality Switzerland, Geneva Lake at Morges [details]
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