What is "tagorians"

Tagorians or Tagoryans (тагоряне) are a fictional, lizard-like alien race from the Noon Universe created by Strugatsky brothers. Their homeworld is Tagora (Тагора), a planet discovered by the end of the 21st century. An official contact with Tagorians, however, was registered in 2122 AD and a full-scaled diplomatic relationship has been established two years later, as soon as human scientists (led by professor Sugimoto) managed to decode and interpret Tagorian language.

Tagorians are mentioned in " An Attempt to Escape" and " Beetle in an Anthill".