The illustration features two distinct shell specimens, showcasing their intricate designs and textures. The upper shell is characterized by a series of pronounced ridges and a slightly elongated shape, displaying a mix of shades that highlight its natural curvature. The lower shell presents a more spiral form, with a smooth inner surface and patterned exterior that suggests a layered structure. Below the shells, the name 'Marmarostoma P.L.' is written, indicating the classification of these marine mollusks, suggesting a focus on their unique anatomical features and natural beauty.