I found some under the tests directory but I’m not sure if they are the right ones.
By authentication templates I mean login.htm, password_reset.htm, etc.
Some of the templates can be found at: http://devdoodles.wordpress.com/2009/02/16/user-authentication-with-django-registration/
No, it looks for those templates in a “registration” directory within your templates folder.
From the docs:
Docs: login, password_reset