This two inch chiton has a wide girdle with an elongated extension at the head valve giving rise to common name of 'jockey-cap chiton.' Bristles are sparsely scattered on this smooth fleshy girdle, heavier on the 'cap' area. Mucro is posterior and depressed. Central areas are smooth. Lateral areas raised and defined by wide diagonal rib and smooth. Whole surface of the valves are marked with concentric growth lines. Color of valves are variable in pink, green, blacks and mottled. The girdle is cream colored, bright pink in life.
Two illustrated specimens on right from Burghardt Collection. The one on right has caught a crab