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The caudal part of the macaque ventrolateral prefrontal cortex (VLPF) is part of several functionally distinct domains. In the present study we combined a cyto- and a myeloarchitectonic approach with a chemoarchitectonic approach based on the distribution of SMI-32 and Calbindin immunoreactivity, to determine the number and extent of architectonically distinct areas occupying this region. Several architectonically distinct areas, completely or partially located in the caudal VLPF, were identified. Two areas are almost completely limited to the anterior bank of the inferior arcuate sulcus, a dorsal one—8/FEF—which extends also more dorsally and should represent the architectonic counterpart of the frontal eye field, and a ventral one—45B—which occupies the ventral half of the bank. Two other areas occupy the ventral prearcuate convexity cortex, a caudal one—area 8r—located just rostral to area 8/FEF and …