FIG. 67. Transverse sections of the stomach of Meganyctiphanes norvegica. (a), the armature of the oesophageal wall and anterior region of the
stomach; (b), the armed ridges (plates) within the stomach. c, chitin lining; g, granular substance; h, ducts of hepatopancreas; m, muscle;
n, nerve ; nu, nuclei; 0 , oesophagus ; 8, spines ; v, vacuoles.