Vermetus alii Hadfield and Kay, 1972. Shell: of medium to large size (diameter of whorls up to 35 mm; maximum apertural diameter, 8 mm); tube in loose coils which may be planorboid but with the distal end often rising several centimeters above the substrate. Aperture circular. Sculpture on earlier whorls of strong axial ribs intersecting and producing a regularly cancellate pattern; later parts of the shell with fine, raised threads. Exterior white with brown streaks; interior white smudged with brown. Operculum: concave with a large, flat central disk attached to the foot; peripheral portions transparent amber with acute spiral lamellae. Animal: head, foot, tentacles and mantle purple-red shading to rose at the edges and toward the neck, spotted with white; posteroventral portion of foot brown-yellow; edge of mantle collar yellow, grading from dark purple to rose posteriorly. Mantle margin entire in both sexes. This is the largest species of the Hawaiian vermetids occurring intertidally and subtidally cemented to coral heads and concrete sea walls in bays such as Kaneohe Bay and Pearl Harbor, Oahu. The shell is usually overgrown with algae which obscure the color and sculpture of the teleoconch. The veliger larvae are planktonic (J. B. Taylor, 1975). V. alii was described from the Hawaiian Islands.