Representative shells of Sinotaia quadrata histrica (Gould, 1859) 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-c: Lake Suwa, Nagano Pref. (a: 2960H, b-c: 2961H).

 
  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