 They have more powers than the arrondissements of Paris, and are more akin to the London boroughs.The commune of Dakar was maintained above these 19 "communes d'arrondissement", and it coordinates the activities of the "communes d'arrondissement", much as Greater London coordinates the activities of the London boroughs.The 19 "communes d'arrondissement" belong to either of the four arrondissements of Dakar, and the "sous-préfet" of each arrondissement is in charge of controlling the activities of the "communes d'arrondissement" in his arrondissement.