PLATE 30. 



Figs. 1,3. Chaetodornm srabra. X 33. Figs. 2, 4-("), 10, 13. Cm^^s sections of Chaetoder 

 rubusta. X 33. Figs. 7-0, 11, 12. Chadoderma japonica. X 33. 



llirough brain region. 



Tlirough radula. 



Same. Through radula. 



Tlirough brain region. 



Tlirough supra rectal comnii.ssure. 



Through posteiior end of prothorax. 



Though outlet, on left, of coelonioduct. 



Through heart and coelonioduct s. 



Through suiirarectal commissure. 



Through junction of pharynx and stomach. 



Through posterior end of prothorax. 



Through junction of pharynx and stomach. 



Through outlet, on left, of coelonioduct. 



