ASSA(Ἀσσα: Eth. Ἀσσαῖος), a town of Chalcidice, in Macedonia, on the Singitic gulf. (Hdt. 7.122.) It is probably the same town as the ASSERA of Theopompus (Steph. B. s. v. Ἄσσηρα), and the CASSERA of Pliny (Plin. Nat. 4.10), its territory being called ASSYRYTIS(Ἀσσυρῦτις) by Aristotle (Hist. An. 3.12). Here was a river which was called the Ψυχρόςfrom its coldness. (Aristot. l. c.) Leake places Assa at the head of the Singitic gulf, at some ruins called Paleókastro, about midway, by land, between Erissóand Vurvurí. ( Northern Greece, vol. 3. p. 153.)