The following images are taken from Pierre Salama, Les Voies Romaines de l'Afrique du Nord (Algiers 1951).
Each small image on this page will enlarge when clicked on. Each subsequent larger image will enlarge again when clicked on to a very large image file (several megabytes) with excellent resolution.
The first two maps show the environs of the two most important cities in Augustine's life. The next three are sections of a very large fold-out map and overlap to show the bulk of the relevant areas of Roman north Africa. The emphasis in Salama's book is on the Roman roads and routes, but the maps are the best I know of the world through which Augustine traveled.