| Euconulidae H. B. Baker, 1928 |
| Euconulinae H. B. Baker, 1928 |
| Euconulus Reinhardt, 1883 |
| Euconulus (Euconulus) Reinhardt, 1883 |
| Euconulus (Euconulus) fulvus (Müller, 1774) |
| Euconulus elegantulus (Pilsbry, 1919) |
| Euconulus fulvus (Müller, 1774) |
| Euconulus pittieri (Von Martens, 1892) |
| Guppya Mörch, 1867 |
| Guppya biolleyi Von Martens, 1892 |
| Guppya capsula Dall, 1926 |
| Guppya elegans (Strebel & Pfeffer, 1880) |
| Guppya elegantula Pilsbry, 1919 |
| Guppya fulvoidea (Morelet, 1851) |
| Guppya gundlachi (Pfeiffer, 1840) |
| Guppya gundlachi subsp. gundlachi (Pfeiffer, 1840) |
| Guppya gundlachi subsp. orosciana Von Martens, 1892 |
| Guppya jalisco Pilsbry, 1919 |
| Guppya micra Pilsbry, 1904 |
| Guppya montanicola Dall, 1926 |