 In those versions, Apollo first sends a monster (called Poena that snatches babies from the Argives.It is slain by this hero, who must then perform the penance of building the tripod city (which in Conon's version was carried out by Crotopus).According to Eusebius, Crotopus reigned for 21 years and during his time, Phaethon's burning of Ethiopia and Deucalion's flood in Thessaly occurred.