36 



SYDNEY EVANS JOHNSON 



m. Aud Rt X- ut.Cd. 



26 



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Fig. 26 Squalus acanthias. .Surface view of a 9 mm. eml)r_vo. X 13. From 

 a sketch by Otto Swezey. 



Fig. 27 Lateral dissection of a 9 mm. specimen showing the roots of the 

 ninth, the lateralis, and the vagus nerves. X 20. 



Fig. 28 Transverse section through the region indicated l)y the line A-B in 

 figure 27. Squahis. X 976. 



