592 



THE INVERTEBRATA 



Fig. 403. Ventral view of male of Sepia officinalis with mantle cavity opened 

 to expose its contents, an. anus; dep.m. depressor muscle of the funnel; 

 e. eye; /z. fin; g.pap. p^enital papilla; hec. hectocotylized arm;/, jaw; k.pap. 

 papilla bearing external aperture of kidney ; kn. cartilaginous knob on mantle 

 which fits into the socket, soc. ; vis.m. visceral mass. Other letters as in Fig. 

 402. From Shipley and MacBride. 



