We focus on North Lombard -a and -n feminine plurals, for which we provide a morphological analysis. At the syntactic level, the relevant varieties are characterized by the phenomenon of Differential Plural Marking, whereby phasal domains have different realizations of plural morphology on the head of the phase and on the complement of the phase. We provide an account of DPM based on the assumption that under the PIC the complement of the phase and its head are externalized separately. We draw consequences concerning clitics as phasal heads as well as object agreement with participles and with finite verbs.