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

This data is the occurrence information of Viviparus sclateri specimens from the Tomotaro Iwakawa collection in the National Museum of Nature and Science, Tokyo, which was examined in the paper, "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, in press".