REPORT OF THE DIRECTOR I919 



93 



- a 



Fig- 33 





Fig. 34 



Figs. 33, 34 E u s a r c u s n e w li n i Claypolc. Fig. 2i Specimen retaining 

 alimentary canal : a expanded anterior portion of mesenteron, b mesenteron, c 

 proctodaeum or rectum. Natural size. Fig. 34 Diagrammatic view of 

 median longitudinal section showing alimentary canal. Mo. mouth, oes. oeso- 

 phagus, sto stomach, liv liver, in intestine, proc proctodaeum, an annus. 



