This paper examines the evolutÏon during the 20th century of 10 dialectal features of verbal morphology, in an area of northeastern Catalonia. It compares dialectological data collected by Alcover in the first decades of the 20th century with data from recent interviews that have been carried out. The general conclusion is that, in this period, whereas features that can be characterized as typical of Roussillon Catalan have receded, those that are typical of Girona Catalan have remained stable in their use or, even, have increased. After presenting the numerical facts, the paper discusses spatialtypology reasons that might expia in this particular evolution; it also refers to system-internal reasons that should be taken into account as well
