324- 



ORGANS OF DIGESTION. 



Larger and more direct openings, varying in number in 

 different animals, are also generally observed leading into 

 this gastric cavity, which is sometimes central and single, 

 and in others is divided into compartments disposed around 

 the vertical axis of the disk. From the transparency of 

 every part of the body in the rhizostoma Cuvieri (Fig. 113. 

 A. B.) the limits of the central gastric cavity (A. d.) and of 

 the four surrounding ovarial sacs (A. e* e. e. e.) can be 

 easily perceived through the thick parietes of the mantle, and 

 also the numerous ramifications of wide vessels which extend 

 from the circumference of this quadrangular stomach to the 

 purple-coloured, lobed, highly vascular, and respiratory 

 margin of the disk (A. B. h. h.). The peduncle hanging 

 from the centre of the disk divides into eight branches (A. r. 



FIG. 113. 



