Figure 4 from: de Winter AJ, de Gier W (2019) A new Nigerian hunter snail species related to Ennea serrata d'Ailly, 1896 (Gastropoda, Pulmonata, Streptaxidae) with notes on the West African species attributed to Parennea Pilsbry, 1919. ZooKeys 840: 21-34. https://doi.org/10.3897/zookeys.840.33878

Figure 4 A–C Shells of Enneacf.thompsonae Connolly from Du River, Liberia (MCZ 77331), identified and illustrated by Degner (1934b, fig. 8a–c) as Ptychotrema (Parennea) sulciferum. D, E enlarged views of body whorl of shell C arrows pointing to second external furrow (D) and second palatal fold in aperture (E). Scale bar: 2 mm (A–C).