The term area Kalt of Pandya refers to a one of two areas of granulous cortex in the portion of the superior temporal gyrus that is hidden in the wall of the lateral fissure in the macaque. The other is area Kam of Pandya. Defined on the basis of cytomyeloarchitecture, the areas are regarded functionally as auditory cortex. Both areas are distinguished by the density of the external granular layer (II), the external pyramidal layer (III), and the internal granular layer (IV), the light internal pyramidal layer (V) and the dense multiform layer (VI). Area Kam occupies "the lateral slope of a small hill of the [temporal operculum]... area Kalt occupies a flat dimple lateral to Kam." Myeloarchitectonic differences between the two areas are more pronounced ( Pandya-1973 ). See also planum temporale.