Heliacus implexus (Mighels, 1845)
10 mm shell diameter (Kay, 1979).
has flat, cream shells irregularly blotched with
brown. They may be distinguished from the shells of
by their lighter color, less numerous marginal brown
spots and the presence of two cords on the margin.
are moderately common in beach drift. Live animals
are occasionally found in shallow rocky habitats.
Oahu, French Frigate Shoals and Midway: also known
from Johnston Island
It's probably listed in Tinker, 1958 as Torinia sp.
CP: composite photo, same shell; 4.5 mm in diameter:
beach drift, Maalaea Bay, Maui; fall, 1979.