Digitate

The supine resting on Water onely by retention of Air[…]doth digitate a reason.

But what is most worthy of notice is, that the greater number of muscular fibres arising from the coracoid and radio-ulnar bones form a pectoral muscle, superficial to the other fibres of the great lateral, and digitating with them along the side of the fish opposite the extremities of the fifth, sixth, seventh, and eighth ribs.