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Chiton carnosus Carpenter in Angas, 1867

Description: Animal elongate ovate, weakly angled dorsally, girdle fairly broad, valve surface usually not eroded. Median valves with lateral and pleural areas distinct; lateral areas with 2-4 nodulose radial ribs; pleural area with 10-15 strong horizontal ribs, absent from jugum. Girdle covered with variable size striate scales, up to 0.6 mm wide, which develop points with age (Fig. 3). Valves mottled green or fawn, or less frequently red, orange, yellow or purple; girdle unbanded or banded dark and light.

Size: Up to 30 mm in length.

Distribution: Endemic to Australia. Known from Caloundra, Qld, southwards to Sydney, NSW.

Habitat: Under stones, at or below low tide level. Uncommon.

Comparison: This species is similar to Chiton vauclusensis, but is separated by the pointed girdle scales.

Fig. 1: Port Stephens, NSW (C.049827).

Fig. 2: McMasters Beach, NSW (C.367029).

Fig. 3: Girdle detail. Same specimen as Fig. 1.


Copyright Des Beechey 2019