Location information

Lamis from Megara founded Thapsus

THAPSOS (Ancient city) SICILY
About the same time Lamis arrived in Sicily with a colony from Megara, and after founding a place called Trotilus beyond the river Pantacyas, and afterwards leaving it and for a short while joining the Chalcidians at Leontini, was driven out by them and founded Thapsus

Perseus: Thucydides, The Peloponnesian War (ed. Richard Crawley, 1910)
• http://www.perseus.tufts.edu/cgi-bin/ptext?lookup=...