On the body, Herakles and Triton On the shoulder, combat of warriors between two fleeing woman In the predella, animals
Triton was a sea-creature born of Poseidon, god of the sea, and Amphitrite. The combat between Poseidon and Herakles was popular during the later sixth century B.C. and is particularly appropriate to hydriai. This encounter has no story but mainly highlights the strength and resourcefulness of Herakles. The warriors on the neck may be Achilles and Memnon, identifiable by their mothers who witnessed the duel.
From the excavations of Lucien Bonaparte at Vulci
Beazley, John D. 1956. Attic Black-figure Vase-painters. p. 280, no. 4, Oxford: Clarendon Press.
Kossatz-Deissmann, Anneliese, Brigitte Servais-Soyez, Fulvio Canciani, Giovannangelo Camporeale, Hans Peter Isler, Ingrid Krauskopf, Odette Touchefeu-Meynier, Marcel Le Glay, and Dr. Jean-Charles Balty. 1997. Thespiades-Zodiacus, Lexicon Iconographicum Mythologiae Classicae, Vol. 8. Triton, no. 4a, Zürich: Artemis Verlag Zurich und Munchen.