This two inch chiton can be found in a wide variety of valve colors: rose, violet, light blue, green, yellow, reddish brown, orange or any combination of these. The girdle is of moderate width and is yellowish to light brown in color. The girdle has minute spicules interspersed with larger pointed spicules singly or in groups. There are also random coarse bristles bearing many spicules.
The specimen shown here was figured on the cover of our 1969 chiton book. It was collected at forty foot depth in Monterey Bay, California.