Scholia in Euripidis Phoenissas (scholia vetera et scholia recentiora Thomae Magistri, Triclinii, Moschopuli et anonyma)
Scholia in Euripidem
Scholia Euripidem. Scholia Graeca in Euripidis Tragoedias, Vol. 3. Dindorf, Wilhelm, editor. Oxford: Oxford University Press, 1863.
ἐχίδναις: κεφαλαῖς ὤφειλεν, λέγει δὲ ἐχίδναις, ὅλον ἀντὶ μέρους τιθείς· ἐχιδνώδεις δὲ ἦσαν αἱ κεφαλαὶ τῆς Ὕδρας. Cant.