Phyllonotus pomum

Phyllonotus pomum, the apple murex, is a species of large sea snail, a marine gastropod mollusc in the family Muricidae, the murex snails or rock snails.

Description
The adult shell's dimensions range from 44 mm to 133 mm.

Original description of Lovell Augustus Reeve (published 1843):

The shell is fusiformly oblong, thick, solid, very rough throughout, transversely conspicuously ridged, tuberculated between the varices ; three-varicose, varices tuberculated with a complicated mass of laminae ; fulvous or reddish brown, columella and interior of the aperture ochraceous yellow, columellar lip slightly wrinkled, edge erected, vividly stained, especially at the upper part, with very black brown ; outer lip strongly toothed, ornamented with three black-brown spots ; canal rather short, compressed, recurved."

Distribution
This species occurs in the Caribbean Sea, the Gulf of Mexico and the Lesser Antilles; in the Atlantic Ocean between North Carolina and Northern Brazil.