THE CARNIVOROUS SLUGS OF SOUTH AFRICA. 183 



Text-fig. 5. 



L.L.. 



„..R.L. 



R.L. 



LX... 



LL. 



D. 



Diagrams illustratinfj the hypothetical evolution of the 



" posterior aorta." 



(Diagram D shows the arrangement in Ape r a gibbon si Inpata.) 



L.L. = Left division of liver. R. = Rectum. 

 R.L. = Right division of liver. V. = Ventricle. 



