A tall humanoid Federation species with very high, domed foreheads, seen among the crew of the refitted Enterprise in Star Trek: The Motion Picture and described in production notes as long-lived and placid.
The Rhaandarites are humanoids marked by an enlarged, bulbous upper skull that rises well above the brow, with small ornaments worn on the forehead. Several serve in Starfleet in the 2270s in standard uniform.
They appear in Star Trek: The Motion Picture, most clearly in the recreation deck scene in which Admiral Kirk shows the crew the destruction of the Epsilon IX station by V'Ger.
The name is not spoken in the film and comes from Robert Fletcher's costume notes. Those notes describe the species as slow to mature and extremely long-lived, gregarious, and happiest when following orders rather than giving them, which is why they tend to hold junior posts.