< Previous species


Next species >

7435-1.jpg (787243 bytes)


7436-1.jpg (694036 bytes)


7437-1.jpg (880571 bytes)

Lorica volvox (Reeve, 1847)

Description: Animal ovatel, elongate, angled dorsally, girdle moderate to broad. Median valves with pleural and lateral areas well defined; lateral area with numerous radiating rows of small pustules; pleural areas with widely spaced longitudinal ridges. Girdle slit posteriorly; surface covered with rounded scales of various sizes, with tufts of spicules (as in Acanthochitonidae), one at the junction of each valve pair, 8 around the head valve, 4 around the tail valve, and in 3 rows spread across the girdle. Colour brown, fawn or grey often with a dark brown stripe on the dorsal ridge.

Size: Up to 90 mm in length.

Distribution: Endemic to Australia: Port Stephens, NSW, southwards and around southern Australia to south-western WA, including Tas.

Habitat: Lives in the low intertidal and shallow subtidal, under stones in muddy situations. Moderately common.

Synonymy: Previously recognised synonyms include Chiton cinolius Reeve, 1847 from SA, Chiton rudis Hutton, 1972 from NSW and Lorica paucipustulosa Hull, 1923 from south-western WA.

Remarks: The tufts of spicules on the girdle are fragile and usually not seen on dried specimens.

Fig. 1: Long Reef, Collaroy, NSW (C.574776).

Fig. 2: Valve and girdle detail (Same specimen as Fig. 1).

Fig. 3: Scales detail (Same specimen as Fig. 1).


Copyright Des Beechey 2019