Xantha
From Tardis Wiki, the free Doctor Who reference
Xantha was a race evolved on a former earth colony. They had a war with the Tibari. (AUDIO: Fear of the Daleks)
Biology
to be added
History
50 years before the Second Doctor, Jamie McCrimmon and Zoe Heriot, landed on Lavonia, the Xantha Empire invaded Tibari prime and started a war. (AUDIO: Fear of the Daleks)