Melongena patula, common name Pacific crown conch, is a species of large sea snail, a marine gastropod mollusk in the family Melongenidae.

Melongena patula has a shell that reaches a length of 75 – 250 mm.

The surface of this shell shows a deep chestnut brown color lined with a few white or yellow spiral bands.

This species can be found from the Gulf of California (Mexico) to Peru.

[1] These sea snails live in shallow water, usually in sandy or muddy areas, especially under mangrove trees.