Distinguishing Characteristics |
Bivalve (2 shells); shell elongate, wider at posterior end, moderately inflated, beak at anterior end; color brown to black, interior iridescent bluish white; interior posterior margin purplish and crenulate, radiating beaded ribs originating from behind beak; anterior end without radiating ribs, but with irregular concentric growth lines; ventral margin slightly to moderately concave; dorsal margin straight for about 3/5 length of shell; anterior muscle scar small; posterior muscle scar elongate. |
Similar Species |
Differs from other ribbed mussels by having a non-ribbed anterior end. |
Habitat |
Bays, around roots of marsh grasses |
Maximum Size |
10 cm (4 in) |
Other Common Names |
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Previous Scientific Names |
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