Failed To Install syslinux on USBDRIVE with Mac OS X
No there isn't syslinux on Mac OS X.
You will have to install it first as described on this blog:
Creating a bootable USB stick from OSX

The essentials steps will be based on:


Disk Utility,
Syslinux  
UNetbootin


The second explains the few basic steps to get and install Syslinux.