A species of Atlantic sea urchin.

A genus of SEA URCHINS in the family Arbaciidae. They have only one spheridium (stalked body) per ambulacral area (contains tube feet); most sea urchins have several spheridia per area.

Synonyms: txid7641, punctulatas, Arbacia, Arbacia punctulatas, Arbacia punctulata, Arbacias, Arbacia, txid7639