Birastrop

Birastrops were a race of short insectoid beings. They had six spindly arms and a chitinous carapace which they could shed at will. Birastrop morality allowed killing for medical research. (PROSE: Where the Heart Is)

Birastrop lungs were capabled of safely breathing in cyanide. Dr Mehendri Solon obtained Birastrop lungs and put them in Morbius' body. (TV: The Brain of Morbius)