PLATE 29. 



Figs. 1-5, 8, 12. Cross sections of Chaetoderma erudita. X 33. Figs. 0, 7, 9-11. Chaetodernia 

 scabra. X 20. 



Tlirough heart and roeloinoduets. 

 Close to junction of pharyn.x and sloniach. 

 Posterior end of prolliorax. 

 Through brain. 



Througli outh'l, on right, of ciiiloMioduct. 

 Suprarectal commissure. 

 Tlirough gills and cloacal chamber. 

 Through radula. 



Through junction of pharj'nx and stomach. 

 Througli hcarl and coclomoducts. 

 Through posterior end of i)rolhorax. 

 Fig. 12. Through suprarei-tal commissure. 



