ABT. 15 ANATOMY OF THE EARED AND EARLESS SEALS HOWELL 61 



ST\LO&LOS.\ 

 STYLOmoiD. 2,\/ ;■ 

 ATLKNTOSCPi?. SUPER.i \^ 

 ATLKNTOSCK?. mrE.^.i 



sc^LE^lus Y ^^'/'./" 



SCALENUS Z 

 STERNOC.OST. KKT. 

 I NTEBCOST. EK]rEV\K y 



/MYLOHYOID. 

 'X^DICAST. 



THYREOHYOin. 

 4jf-5TVL0H\0lD.l 

 Mrr^TEHNO-UVOlB.t -THrRO\B. 

 5TERN0rAAS>T0\D. 

 ^-•TK^CHEO-VERT. fAUSCLtS 



DEPKESSO'R.SCfVP 

 SEKRAT. fA^Gr. 

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 OBl\(l.AB^OIA.ty>T. 



^-PECT. SUPEl^F. 

 ■PECT. "PROF, 



Fig. 19. — Ventral musculature of Phoca hispida ; superficial 

 layer upon the right, and much of the next deeper layer to 

 the left of the medial line 



