Gude G. K. (1899). Armature of Helicoid landshells and a new species of Plectopylis. <em>Science Gossip.</em> 6 (61): 15–17., available online athttps://biodiversitylibrary.org/page/34012896 page(s): 15–16, figs 98a–g [details]
original descriptionGude G. K. (1899). Armature of Helicoid landshells and a new species of Plectopylis. <em>Science Gossip.</em> 6 (61): 15–17., available online athttps://biodiversitylibrary.org/page/34012896 page(s): 15–16, figs 98a–g [details]