Actually, it would have been nice if Gene had gone ahead with it with a different actress. I love getting alien looking crewmembers.
Well, he
did. Ever heard of Paula Crist? Paula was an up-and-coming actress and stuntwoman who played a wolvish male alien at a big science fiction convention costume parade in the late 70s, attended by the Roddenberrys. I've seen a pic of Paula in this costume, and it seemed rather influenced by M'Ress of TAS.
GR asked Paula to come and audition as "bridge alien" in ST:TMP, the role that went to Billy Van Zandt. But Paula auditioned as Worene - in her own makeup design - a female version of her wolvish character. Robert Wise thought the startling appearance of Worene would be too distracting on the bridge, and she was relegated to the rec deck scene with all the other no-lines ST fan extras - but she
did still get a credit!
Worene (front, center):
Paula went on to play the inside of Baby the brontosaurus, in "Baby: Secret of the Lost Legend". The character of Worene appears in the ST novel, "Ex Machina" by Christopher L Bennett. She's an Aulacri, from P
AULA CRIST.
Which were referred to as Caitian by the make-up crew. Not officially Caitians, but close enough.
Yes, the two felinoids in the council scenes in ST IV were meant to be the Makeup Dept's salute to Caitians.
But: William Shatner's triple-breasted "cat dancer" (get it?), who drowned in the pool table (get it?), was referred to in behind-the-scenes paperwork as a
kzinrrett, a joking reference to Larry Niven's
kzinti ("Ringworld", rather than TAS), complete with his spelling oddities for showing a female of a species.
Like he might have been just off screen and we just missed seeing him. It makes the TOS Starfleet seem that much more magical to imagine that it wasn't limited to humans (and that one guy with the ears).
Precisely what David Gerrold did with an Arex & M'Ress cameo in "The Galactic Whirlpool".