Black Herring - 2016-08-22

After typing:
"proxychains firefox www.duckduckgo.com"

I recive and error saying:
"ProxyChains-3.1 (http://proxychains.sf.net)
/usr/bin/proxychains: 9: exec: firefox: not found"

I asume it is struggaling to find my browser, can someone please give any suggestions?