In the subsequent pages, a brief description is given of the major morphological aspects of limbic system: cortex, subcortical gray derivatives, and pathways intrinsic to the system. In addition, the medial forebrain bundle, habenular complex, and some relationships with the neocortex are discussed in a few paragraphs, since in the strict sense these structures appear closely related in function to the telencephalic limbic system. (47 pp.)