Fig. 22 in Systematic revision of the Plectopylinae (Gastropoda, Pulmonata, Plectopylidae)

Fig. 22 (next page). A–F. Shells of species of Chersaecia Gude, 1899. A. C. nagaensis (Godwin-Austen, 1875), syntype (NHMUK 1903.7.1.753). B. C. nagaensis muspratti (Gude, 1897), syntype (NHMUK 1912.4.16.320). C. C. perarcta perarcta (Blanford, 1865), probable syntype (NHMUK 1903.7.1.753). D. C. perarcta perarcta (NHM 97458). E–F. Shell and protoconch of C. perarcta simplex (Solem, 1966), paratype (ZMUC-GAS-487). G–H. Genitalia of C. perarcta simplex (Solem, 1966) (ZMUCGAS-487). G. Male part of the genitalia. H. Opened penis (arrow shows thickened part of penial folds). Scale bars: A–E (upper scale) = 10 mm; F–H = 1 mm. Photos: H. Taylor (A–C), T. Deli (D) and B. PállGergely (E–F).