 Isomeria aequatoriana (Hidalgo, 1867) |  Isomeria aff. calomorpha (Jonas, 1839) |  Isomeria aff. subcastanea (Pfeiffer, 1842) |
 Isomeria atrata (Pfeiffer, 1852) |  Isomeria bituberculata (Pfeiffer, 1852) |  Isomeria bourcieri (Pfeiffer, 1852) |
 Isomeria calomorpha (Jonas, 1839) |  Isomeria cf. cymatodes (Pfeiffer, 1852) |  Isomeria cf. oreas (F. C. L. Koch, 1844) |
 Isomeria cymatodes (Pfeiffer, 1853) |  Isomeria kolbergi (K. Miller, 1878) |  Isomeria loxensis Miller, 1879 |
 Isomeria mauritii Jousseaume, 1887 |  Isomeria neogranadensis (Pfeiffer, 1845) |  Isomeria ritchieana Pilsbry, 1889 |
 Isomeria sp. 94019 |  Isomeria subcastanea (Pfeiffer, 1842) |  Labyrinthus manueli Higgins, 1872 |
 Labyrinthus raimondii (Philippi, 1867) |  Labyrinthus tarapotensis baeri Dautzenberg, 1902 | |