Zinaida Chitirih-Ra-Payjh was a female Deltan mathematician working on the Genesis Project on Regulus I in 2385. She was the mate of Jedda Adzhin-Dall and had aquamarine eyes flecked with silver. She ended her life rather than submit when Khan Noonien Singh put a Ceti eel in her ear. (TOS novelization: Star Trek II: The Wrath of Khan)