South American shells in the AM collection. All figure trios show the shell in apertural, apical and umbilical views. A–C. Isomeria cymatodes, AM MA104139; H = 28.2 mm, D = 49.2 mm; E–F. Isomeria juno, AM MA104143; H = 18.9, D = 33.3 mm; G–I. Epiphragmophora lentiformis, paratype, AM MA73551; H = 11.2 mm, D = 26.5 mm. Scale bars: 5 mm (E–I); 1 cm (A–C).