| Species name | Common name | Distribution | Max. Length (cm) |
|---|---|---|---|
| Megalomphalus azoneus (Brusina, 1865) |
Mediterranean Sea | ||
| Megalomphalus californicus (Dall, 1903) |
California macromphaline | East Pacific | |
| Megalomphalus caro Dall, 1927 |
Western Atlantic | 0.12 | |
| Megalomphalus disciformis (Granata-Grillo, 1877) |
Mediterranean Sea | ||
| Megalomphalus floridanus (Moore, 1965) |
Florida macromphaline | North America | |
| Megalomphalus lamellosus (d'Orbigny, 1842) |
Western Atlantic | 0.2 | |
| Megalomphalus margaritae Rolán & Rubio, 1998 |
Western Central Atlantic | ||
| Megalomphalus millerae (Usticke, 1959) |
Western Atlantic | 0.55 | |
| Megalomphalus palmalitoris (Pilsbry & McGinty, 1950) |
Palm beach macromphaline | North America | |
| Megalomphalus petitianus (Tiberi, 1869) |
Mediterranean Sea | ||
| Megalomphalus pilsbryi (Olsson & McGinty, 1958) |
Pilsbry's macromphaline | Western Central Atlantic | 0.63 |
| Megalomphalus troudei (Bavay, 1908) |
Western Atlantic | 0.28 |