Casia Regio

CA´SIA RE´GIO (ἡ Κασία χώρα), a district of Scythia extra Imaum. SW. of the Issedones, touching on the W. the Imaus and the caravan station for merchants going from the Sacae to Serica [ASCATANCAS], and extending E. as far as the CASII M. (Ptol. 6.15.3.)