Erillai
Pronunciation: eh-rill-eye
Alternate Spelling: runner (colloquial)
The erillai herds are an amazing sight to behold and the Casanii consider it their duty to protect them from devanu hunters or other outsiders who might otherwise decimate the population.
They are a common sight on the plains to the south west of the central empire. These elegant beasts participate in the great migrations and are often hunted by devanu and other beasts of the plains. Their herds are however often protected by the ferals who run with the migrations, and bitter conflicts often arise when hunters make the mistake of believing those herds to be fair game.

An erillai

Sources: Twilight Traveller Issue 9, http://forum.worldoftwilight.com/index.php?topic=180
Author(s): Mike Thorp