A Oospira penangensis (Stoliczka, 1873) BOR/MOL 15243 B Prosopeas tchehelense (de Morgan, 1885) BOR/MOL 15162 C Hemiplecta cymatium (L. Pfeiffer, 1856) BOR/MOL 15736 D Microcystina Penang sp. 1 BOR/MOL 15754. Scale bars: 10 mm (A–C); 0.5 mm (D).

 
 
  Part of: Goh S-M, Jasrul D, Lee M-Y, Vermeulen JJ, Liew T-S (2025) From 153-year-old records to contemporary discoveries: land snail (Mollusca, Gastropoda) diversity in Penang Hill, Malaysia. ZooKeys 1230: 99-154. https://doi.org/10.3897/zookeys.1230.136906