Rigelian

There are several species that go by the name "Rigelian" or "Rigellian":


 * The primitive human-like Rigellians of Rigel VII. This species includes an infamous subspecies, the Kaylar. (TOS episode "The Cage").


 * The four- (or five-)gendered Rigelians who share a similar neurology to Vulcans and participated in early negotiations (in the 2150s) about forming a Coalition of Planets with Earth, Andor, and others. (ENT episode "United" and others).


 * The Rigellian Chelons, said to be descended from "saber-toothed turtles". (TOS movie ''Star Trek: The Motion Picture).


 * The silver-skinned Rigelians, who have been known to travel as far from home as the orbital city Oblivion. (STA novel Oblivion)


 * The furred Rigellians, whose reputation as sharp traders wasn't upstaged until contact with the Ferengi. (TOS novel The Final Reflection).