What is "iyrcae"

The Iyrcae were an ancient nation on the north-east trade route described by Herodotus beyond the Thyssagetae.

They were distinguished by their mode of hunting, climbing a tree to survey their game, and then pursuing it with trained horses and dogs. The reading Τυρκαι is an anachronism, and when Pliny the Elder and Pomponius Mela speak of "Tyrcae" it is also probably due to a false correction.