About Phorcus richardi (Payraudeau, 1826)
Phorcus richardi (Payraudeau, 1826) is a sea snail species with a shell length ranging between 10 mm and 23 mm. The shell is umbilicate and conoidal in shape, and has an olivaceous or yellowish base color. It is decorated with oblique longitudinal tawny stripes, and the entire surface of the shell is smooth. The conical spire is short, with deeply impressed sutures. The shell has five convex whorls; the final whorl is flattened and slopes around its upper section, and has a very obtuse subangular shape around its periphery. The large aperture is very oblique. The outer lip is thin and acute, with a very narrow yellow margin, followed by a black line, and an opaque white band approximately 2 mm wide inside the black line. The columella is arcuate at the upper end, where it partly surrounds the umbilicus with a white callus, and is straightened in the middle. The umbilical tract is large, white, and funnel-shaped, and is bounded by a carina. This species is distributed in the Mediterranean Sea and the Adriatic Sea.
