Edward Herbert Bunbury, ‘Agrigentum’, in Dictionary of Greek and Roman Geography, ed. by William Smith (London: Walton and Maberly; John Murray, 1854).
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Polybius is the only author who mentions the Agrigentine Hypsas by name, and he states distinctly that it was the river flowing at the foot of the hill of Agrigentum on the W. and SW. See
Polybius, Histories, tr. by W. R. Paton (Cambridge, MA: Harvard University Press, 1922–1927), IV : Fragments of Books 9-15 (1925), 9.27.
