60 



PROCEEDINGS OF THE NATIONAL MUSEUM 



VOL. 73 



&EN\OHVQ\T)/ 



THYRtomom. 



TRKCVAE£).-\IEWr. fAUSC 



STERUOCOST 

 DEPBES. SCAP. 



mLOHVO\tS. 

 D\&ftST. 

 STEBNO-H'YO\D.+ -lWYR0i.'D. 

 O^AOH\O^D. 

 •STE'RUOr'vKST. 



CLE\Bo^^^5T. 



CEPHKLOHUfA. 



■PROP. 



Fig. 18. — Ventral mdsctjlatuke of Zalophus ; suPERFiciAri 



LAYER CPOX THE RIGHT, AND MUCH OF THE NEXT DEEPER 

 LAYER TO THE LEFT OF THE MEDIAL LINE 



