Panopea smithae is a species of large marine bivalve mollusc in the family Hiatellidae.
This species is endemic
to New Zealand
including the Chatham Islands
is found on coarse shelly bottoms, at depths of between 105 and 130 m
The shell is large and solid, of similar size to Panopea zelandica
but of rhombus
outline, being cut away ventrally at the anterior end, and obliquely truncated at the posterior end.
Height is up to 76 mm, width up to 130 mm, and thickness 60 mm.