866 AUSTRALIAN HIRUDINEA, II. 



Fig. 5. — Ventral view of posterior extremity. 

 Fig. 6. — Dorsal view of posterior extremity. 



Plate xxxiii. 

 Fig.l. — View of the entire animal. 

 Fig. 7. — Diagrammatic view of anterior extremity, showing arrangement of 



annuli with reference to anterior sucker. 

 Fig. 8. — Diagram showing position of genital apertures, with reference to 



the annuli of somites x. and xi. 

 Fig. 9.— Section through proboscis-like organ, showing highly vascularised 

 condition. 



(Figs. 1-6 drawn from photos.) 



