Lumpy Morum, Morum tuberculosum

Lumpy Morum, Morum tuberculosum. Size: 2.6 cm (1.1 inches) x 1.8 cm (0.7 inches).

The Lumpy Morum, Morum tuberculosum (Reeve, 1842), is a member of the Harpidae Family of Harp Shells, that is also known as the Humped Morum Harp and in Mexico as morum jorobado, is a member of the Harpidae Family of Harp Shells. Lumpy Morum shells are cylindrical in shape with exterior having sculpting with concentric rows of tubercles. Their spire is low to flat and the aperture is long and narrow. The exterior of the shells are generally cream colored, with dark brown blotches and speckles; the interiors are white to light yellow. The Lumpy Morum Shells reach a maximum length of 4.3 cm (1.7 inches).

Lumpy Morums are found in sand, or under rocks in sand in the intertidal zone to depths up to 50 feet. They are found from Magdalena Bay, Baja California Sur along the southern west coast of the Baja, throughout the Sea of Cortez, and south to Peru.