PLATE VI 



THE BRAIN OF CHLAMDOSELACHUS 



Fig. 24. The brain in dorsal view and in transverse sections taken at various levels. 



Fig. 25. Ventral view of the brain of the frilled shark. 



Fig. 26. The brain of Chlamydoselachus in lateral view. 



Fig. 27. Vertical longitudinal section of the brain of Chlamydoselachus. 



1, olfactory lobe; 2, nervus opticus; 3, oculomotorius; 4, trochlearis; 5, trigeminus; 6, abducens; 7, facialis; S, acusticus; 

 9, glossopharyngeus; 10, vagus. 



These figures are reproduced from the origiiial drawings by Paulus Roetter for Garman, 1885.2, Pis. XV and XVI. 



