[1] The rare headword noun is here in the accusative plural. It is likewise or similarly glossed in other lexica (see the references at Photius mu284 Theodoridis), and reckoned to be quoted from 1 Esdras 8.28 LXX; see also 1.12. (Josephus, Antiquities of the Jews 15.216, uses the word also, but in the accusative singular; likewise 1 Esdras 1.5 and 5.4 LXX.)
[1] For dekarchy (government of ten, decemviratus) cf. delta 172. The sense (and validity) of its use as a glossing term here is dubious.