My friend and I are both using the latest version of bitcoin-qt on a mac with el capitan.
In the interest of saving harddrive space I would like to remove the blockchain from my mac and put it on a separate drive.
He and I, both, cannot find the directory in the normal place:

~/Library/Application Support/Bitcoin/

It is not there.  I have searched everywhere on my computer, and his, and cannot find the file in order to erase/remove it?

Where is it?  What is is named by default?