Problem finding the /tty port for Bridge on MacOSX

Hi guys, I’m trying to establish a Bridge connection with my Arduino Yún and I am having trouble. I am aware that the serial connection goes through the /tty port instead of the local network but I can’t seem to find the /tty port from the Serial menu in MacOSX. I remember that Arduino used to have an option for choosing wether to use the /tty port but now it appears to choose the port automatically.

I am running Arduino 1.6.4
See the attached image.

Screen Shot 2015-05-18 at 5.33.29 PM.png