PSE´SSII or PSESSI(Ψήσσιοι, Ptol. 5.9.17; Ψησσοί, Apollod. ap. Steph. B. s. v.;in Plin. Nat. 6.7, the old editions have Psesii, but Silling reads Psessi; it appears from an inscription that Psessi is the correct form, Inscr. inJahn's Jahrbücher, vol. 36. p. 225), a people in Sarmatia Asiatica, placed by Ptolemy between the lake Maeotis and the Hippici Montes after the Siraceni.