VII 



MOLLUSCATHE PALLIAL COMPLEX 



83 



FIG. 80. Sepia Savignyana, from behind (after Savigny). The greater part of the mantle cut 

 open and laid back on the right side (left in the figure), a, Prehensile tentacle ; b, oral arm ; c, 

 mouth with jaws ; (?, lower aperture of siphon ; e, eye ; /, locking apparatus of theinantle g ; h, right 

 ctenidium ; i, siphon ; k, locking apparatus of the mantle on the visceral dome ; I, upper aperture 

 of siphon ; 7/1, anus ; n, depressor infundibuli ; o, penis ; p, right nephridial aperture ; q, posterior 

 integument of the visceral dome ; r, fin. 



