Figure 1 from: Páll-Gergely B, Hunyadi A, Ablett J, Văn Lương HV, Naggs F, Asami T (2015) Systematics of the family Plectopylidae in Vietnam with additional information on Chinese taxa (Gastropoda, Pulmonata, Stylommatophora). ZooKeys 473: 1-118. https://doi.org/10.3897/zookeys.473.8659

Figure 1 - Nomenclature of parietal (A) and palatal (B) plicae and lamellae. Small arrows under the letters show the direction of the aperture. Large arrow next to figure B shows the direction of counting of palatal plicae (first above, last below). Abbreviations: al: anterior lamella; lp: lower plica; pl: posterior lamella; up: upper plica.