Plate XXII. caa, anterior limb of anterior commissure; cau, head of 

 caudate nucleus; cc, corpus callosum; ce, external capsule; cf, 

 column of fornix; cin, internal capsule; cla, claustrum; en, cingulum; 

 db, diagonal band of Broca mingled with other fibres of praecom- 

 missural system; fbl, lateral division of medial forebrain bundle; 

 fe, endorhinal groove; fos, fornix superior; frh, rhinal fissure; in, 

 indusium griseum; nac, nucleus accumbens septi; nc, neocortex; pc, 

 praecommissural system of fibres running through nucleus of diagonal 

 band of Broca; pyc, pyriform cortex (lateral olfactory gyrus); s, 

 septum (the letter is in the pallial part of Johnston — his primordium 

 hippocampi); to, tuberculum olfactorium; tol, lateral olfactory 

 tract; vl, lateral ventricle. 



