Living snails from Bau A Japonia barbata (L. Pfeiffer, 1855) ME 8768 Gunung Kapor B Opisthophorus euryomphalus (L. Pfeiffer, 1856) ME 8779 Gunung Kapor C Opisthophorus biciliatus Mousson, 1849 ME 8754 Gunung Kapor D Opisthophorus birostris (L. Pfeiffer, 1854) ME 8755 Gunung Kapor. All not to scale.

 
 
  Part of: bin Marzuki ME, Liew T-S, Mohd-Azlan J (2021) Land snails and slugs of Bau limestone hills, Sarawak (Malaysia, Borneo), with the descriptions of 13 new species. ZooKeys 1035: 1-113. https://doi.org/10.3897/zookeys.1035.60843