Fig. 3. “The Brain of a Skait,” Collins, 1685. The lower diagram shows the
ventral surface of the brain of a skate (Elasmobranchii). The neurointermediate lobe
of the pituitary is shown as a large, centrally located process, which lies between the
dark lateral extensions of the saccus vasculosus, which are marked “c.” The ventral
wall of the hypothalamus is seen as the two white lobi inferiores, which are marked
“b,” and between these lies the rostra1 lobe of the adenohypophysis. ( a ) Telencephalon, (b) lobi inferiores, ( c ) saccus vasculosus, ( d ) neurointermediate lobe of the
pituitary, and ( e ) medulla oblongata.
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