220 Gicynneth Buchanan : Australian Earthworms. 



;g \^ . - Braiicli from commissural vessel to alimentary 



canal. 

 Branch from commissural vessel to septum. 

 Branch from dorsal to heart. 

 Branch from sub-intestinal or lateiai to septum. 

 Brand) from supra-intestinal to alimentary canal. 

 Branch from calciferous gland to sub-intestinal. 

 Branch from supra-intestinal to calciferous gland. 

 Branch from comuiissural to septum and body 



wall. 



- Branch from dorsal to septum. 

 Dorsal vessel. 

 Heart. 



- Mesentery. 



- Plexus on alimentary canal. 



- Branch from plexus to septum. 

 Supra-intestinal vessel. 



V. - Sub-intestinal vessel. 



- Ventral vessel. 



