Representative shells of Heterogen longispira (Smith, 1886) from Japan, deposited in the collection of the National Museum of Nature and Science, Tokyo, which were treated as Viviparus sclateri (Frauenfeld, 1865) in Iwakawa (1919)a: 2964L from Lake Biwa, Shiga Pref. b: 2966L from Hikone City, Shiga Pref.

 
  Part of: Saito T, Kagawa O (2020) New insights from museum specimens: a case of Viviparidae (Caenogastropoda: Mollusca) in Iwakawa’s collection preserved in the National Museum of Nature and Science, Tokyo. Biodiversity Data Journal 8: e52233. https://doi.org/10.3897/BDJ.8.e52233