Jacobine shell or scallop鈥楾his shell is a bivalve of the family of Pectens or Escallops. The figure painted by Kleemann an ingenious German artist; represents the under side of the escallop; called by some the Shell of St. James and by others the Jacobine Shell.'Handcoloured copperplate engraving from 鈥楾he Naturalist's Pocket Magazine; or; Complete Cabinet of the Curiosities and Beauties of Nature' (1798~1802) published by Harrison; London.