| Rating | Solver | Clue |
|---|---|---|
| PELECYPOD | Lamellibranch | |
| BIVALVE | Lamellibranch | |
| TRIMYARIAN | A lamellibranch which has three muscular scars on each valve. | |
| INCURRENT | Characterized by a current which flows inward; as, the incurrent orifice of lamellibranch Mollusca. | |
| INEQUILATERAL | Having the two ends unequal, as in the clam, quahaug, and most lamellibranch shells. | |