You'll need to change them in 2 places for each: dictionary.gd and expansionsetup.gd. A Ctrl+F search for the name will bring them up quick. Outside some #comments there's only one line in each script (*.gd file) that needs to be changed
Though, if you think it's an improvement, I can just do it for you - got a list of recommended changes? Note some subspecies are only one gender though.