_F.a._, External arcuate fibers; _C.r._, corpus restiforme; _P_,
pyramid; _T_, corpus trapezoideum; _B.p._, middle peduncle of
cerebellum; _P.c._, cerebral peduncle; _S_, sulcus lateralis;
_T.t._, tractus transversus; _L._, trigonum lemnisci; _C.a._, corpus
quad, ant.; _C.p._, corpus quad, post.; _B_, commissure of _C.p._;
_G_, corpus geniculatum internum; _T.o._, olfactory peduncle;
_B.o._, olfactory bulb.
]