CC : Corpus callosum. See the symmetrical arrangement of the fibres that radiate into the two hemispheres. The corpus callosum forms the roof of the ventricle here.

C - H : Head of the caudate nucleus. Notice how the internal capsule separates it from the putamen of the lentiform nucleus, interrupting the continuous mass of grey. The thin external capsule covers the putamen (lentiform nucleus) on the lateral aspect. "Cl"  is the claustrum. Lateral to it is another sheet of white matter followed by the cortex of the insula.

The temporal lobes (T) are cut through their anterior ends.

The tiny white bundles (Olf) are the olfactory tracts on the undersurface of the frontal lobes.

The lateral ventricles are separated by the thin septum pellucidum (not labelled).

This, then, is a coronal slice passing through the anterior horns of the lateral ventricles.