Hos'tau

The Hos'tau klinast were known as those most adept at magic amongst the half-krolvin.

In their pursuit of magical knowledge, members of the Hos'tau often sought privacy and as a result, usually had very strong connections with fellow half-krolvin. Their symbol is a square within a circle.

Reference

The official documentation is located at: http://www.play.net/gs4/info/races/cultures/halfkrolvin.asp