Plate 23: Cadmus Killing the Serpent (Draco a Cadmo interficitur), from Ovid's 'Metamorphoses'

Hercules and the Serpent Ladon, from "The Labors of Hercules"

Antonio Tempesta

Plate 22: Cadmus's Men Killed by the Serpent (Draco Martius Cadmi socios depascit), from Ovid's 'Metamorphoses'

Antonio Tempesta

The Labors of Hercules: Hercules Killing the Lernean Hydra

Hans Sebald Beham

The Labors of Hercules: Hercules Killing the Lernean Hydra

Hans Sebald Beham

Hercules and the Hydra, from The Labors of Hercules

Hans Sebald Beham

Apollo Killing the Python

Possibly by Robert Willemsz de Baudous, After Hendrick Goltzius

The Labors of Hercules: Hercules Killing the Lernean Hydra

Hans Sebald Beham

Hercules and the Hydra of Lerna

Marco Angolo del Moro

Hercules and the Hydra of Lerna, from "The Labors of Hercules"

Antonio Tempesta

Hercules Killing the Hydra of Lerna

Battista Franco

Apollo standing at left shooting a python with an arrow, above to the left are the muses and at right on a cloud Cupid approaching Apollo, from the "Story of Apollo and Daphne"

Master of the Die, After Baldassarre Tommaso Peruzzi

Hercules and the Hydra; wielding a torch he attacks the winged, multi-headed Hydra in rocky landscape, a hawk attacks a heron in the sky

Cristofano di Michele Martini (Il Robetta), After Antonio Pollaiuolo