From: Star Trek: The Next Generation

Caption: Two Barkonians, Gia and Garvin, on Barkon IV.

Star Trek: The Next Generation

Episode: TNG 268 - Thine Own Self

A pre-industrial, humanoid civilization residing on Barkon IV, located in the Barkon System.  While retrieving a downed radioactive space probe on their planet, Lieutenant Commander Data encountered the humanoid Barkonians, unwittingly exposing them to radiation poisoning.