Disable ability to add new pages to Wiki

This is going to sound strange but we have a problem where our wiki pages are getting out of control.  We would like to set up a page structure and only allow the "owner/administrator" of the wiki site to add pages but let all the user add content under the appropriate pages.  Unfortunately it doesn't look like the contributor permissions work on the wiki pages like they do on normal sites.  On a normal site if I have someone set to be a contributer they can edit pages but can't add them.  On the wiki site they can still add pages.

I'm hoping there is an easy way to disable the ability for certain users to add new wiki pages.

Thank you

I code for fun not for a living at Connect Christian Church near Cincinnati Ohio (http://connect.cc)