Mactridae – Mactrinae: Austromactra contraria (Reeve, 1854) (‘contrary trough-shell’)

Synonym(s): contraria Reeve, 1854 caloundra Iredale, 1930.

Typical shell-length 65 mm. Lives subtidally in sand. Native. Endemic to southern and eastern Australia (QLD, NSW, TAS, VIC and SA).