PORTI´SCULUS
PORTI´SCULUS a hammer or truncheon with which, as well as with his voice, the pausarius (=κελευστὴς) regulated the motion of the oars, and made the rowers advance or stop rowing. So Ennius (ap. Non. 151, 26): “tonsamque tenentes Parerent, observarent, portisculu‘ signum quum dare coepisset.” The pausarius is also called hortator (Plaut. Merc. 4.2, 5; cf. Ov. Met. 3.618). His duties and his station in the stern of the ship are thus described by Silius Italicus (6.360):Mediae stat margine puppis
Qui voce alternos nautarum temperet ictus Et remis dictet sonitum.