About Calliostoma gloriosum Dall, 1871
This section describes the shell characteristics of Calliostoma gloriosum Dall, 1871. The shell can reach a maximum height of 24 mm. It is an acute-shaped shell that has six gently rounded whorls, marked with fine, revolving, thread-like ribs. Four to five of these ribs located near the suture are granulated. The body whorl features a rounded carina. The base of the shell is flattened, and bears approximately twenty-five revolving striae. The thick columella is not reflected, but its base has a slight groove or depression behind it. The aperture makes up about one-third of the total length of the entire shell; it is rhomboidal, pearly, and smooth in texture. The shell is a beautiful light salmon color, and is decorated near the suture and carina with alternating patches of light yellow and chestnut-brown. This species is found in the Pacific Ocean off the coast of California.
