Medium sized mollusc with a hard opaque external
shell. Shell is brown mottled with white and thick, but
the aperture (opening) is elongated and wide; spire
involute. Cephalic shield is mottled a light brown with
two paler areas around eyes. A pair of inrolled
cephalic tentacles is present and a pair of posterior
flaps covers the anterior part of the shell. Parapodia
are small and only partially cover the shell. The
posterior lobe is reduced and partially visible. Size
range of specimens 3-17mm, the smaller specimen
was found on algae, but this species is found in fine
silt to muddy sand.
Specific characteristics: The size and shape of the
shell in this species are sufficient to separate from
related taxa.