[1] Up to this point the entry = Photius, Lexicon 19.15, and is similar to entries for ἐσκήνωσεν in Hesychius epsilon6232, Lexica Segueriana 237.10 and (according to Adler) the unedited Lexicon Ambrosianum) 2183. This conjunction between entries in various lexica, as well as the information imparted in the rest of this entry, reflect the fact that denominative derivatives of σκηνή ('tent') occur as e-contracts, a-contracts and o-contracts. Of these, the o-contract forms are the most common. The particular form of the headword is attested outside lexicography only in Xenophon, where it usually refers to military encampment (though not always in tents: Anabasis 4.2.22 (Web address 1)).
[2] From the scholia to Aristophanes, Acharnians 69 (Web address 2) where the e- or a-contract form ἐσκηνημένοι appears. The scholium goes on to deny explicitly that the verb follows the third (o-contract) conjugation.
[3] A curious grammatical mish-mash: the perfect middle form of the e- or a-contract (cf. under kappa 1483) is glossed with the equivalent o-contract form, and then with a present active form of a different verb.