Results are presented from a survey of the insects inhabiting about 250 caves in Alabama, at the southern end of the Appalachian Mountains. A rich fauna of over 200 species of insects is now known from aquatic and terrestrial cave habitats in Alabama. Sixty-nine of these species are judged to be cave-limited troglobites, 69 are troglophiles, and 18 are trogloxenes. The troglobitic species consist of 9 Collembola, 5 diplurans, 21 carabid beetles, 20 pselaphid beetles, and 13 leiodid beetles. -Author