The term area reIt of Pandya refers to a cortical area located in the portion of the superior temporal gyrus in the depth of the lateral fissure at the caudal extreme of the insula in the macaque. Defined on the basis of cytomyeloarchitecture it lies between the auditory cortex and the parietal lobe. It differs from the adjacent auditory cortex, area proA of Pandya and area paAc of Pandya in that the cellularity of the external pyramidal layer (III) is "coarser" with larger pyramidal cells deep in the layer, the internal granular layer (IV) is less prominent, and the internal pyramidal layer (V) is denser with medium-sized pyramidal cells. Cellularity in the multiform layer (VI) is as dense as in area paAc. Area reIt is moderately myelinated ( Pandya-1973 ).