; browse-url.el が load されている必要があります。
(setq browse-url-browser-function 'browse-url-lynx)
(setq browse-url-lynx-arguments '("-cfg" "~/.lynx/lynx.cfg" "-color"))
(setq browse-url-lynx-kterm-arguments '("-T" "Lynx@gnus" "-n" "Lynx" "-geometry" "80x40"))
(defun browse-url-lynx (url)
  (interactive (browse-url-interactive-arg "sLynx URL: "))
  (apply 'start-process "kterm" nil "kterm"
         (append
          (append browse-url-lynx-kterm-arguments
                  '("-e" "lynx"))
          (append browse-url-lynx-arguments (list url)))))