ταῖσι

From LSJ

γῆ θηρίοις μᾶλλον ἢ ἀνθρώποις σύμμετροςregion more fitting to beasts than men

Source

French (Bailly abrégé)

poét. c. ταῖς, dat. pl. fém. de l'article.

Russian (Dvoretsky)

ταῖσι: ион. = ταῖς (см. ὁ, ἡ, τό).