Figs 13–22 in Terrestrial mollusc species richness and diversity in Omo Forest Reserve, Ogun State, Nigeria

Figs 13–22. Streptaxidae: (13) Gonaxis camerunensis, H 9 mm; (14) Ptychotrema okei, H 9.9 mm; (15) Ptychotrema sp., H 9.8 mm; (16) Ptychotrema shagamuense, H 15.8 mm; (17) Gulella monodon, H 6.48 mm; (18) Gulella reesi, H 5.92 mm; (19) Gulella io, H 3.64 mm; (20) Gulella jongkindi, H 4.08 mm; (21) Gulella cf. opoboensis, H 3.24 mm; (22) Tomostele musaecola, H 3.84 mm. Scale bars = 5 mm (Figs 13–16) and 1 mm (Figs 17–22).