Shell (Figures 1h, 28). The shell with up to eight whorls
is compact, oval and relatively small, with a maximum
of about 20 mm in specimens outside Australia (Glaubrecht
unpubl. data), but consistently smaller in those
known from this continent (Table 1). The flexed axial
ribbs are opisthocyrt and very prominent, as are the elevated spiral ridges and grooves basally on the last
whorl. The colour varies from dark to lighter tones, but
mostly from black to dark brown.
Shell (Figures 1h, 28). The shell with up to eight whorls
is compact, oval and relatively small, with a maximum
of about 20 mm in specimens outside Australia (Glaubrecht
unpubl. data), but consistently smaller in those
known from this continent (Table 1). The flexed axial
ribbs are opisthocyrt and very prominent, as are the elevated spiral ridges and grooves basally on the last
whorl. The colour varies from dark to lighter tones, but
mostly from black to dark brown.
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