( iii. ) 



Fig. 5. 



Diagram showing origin and insertion of the autoto- 

 niiser. 



a = Autotomiser. 



/ = Breaking furrow. 



Figs. 6, 7 and 8. 



Showing the condition of the basal segments, before, 

 during and after autotoray. 



a = Autotomiser muscle. 

 / = Breaking furrow 



b — Ring of integument broken off from segment 

 three when autotomy occurs. 



Fig. 9. 



Copy of tracing showing reflex contraction of the 

 extensor of the second segment during autotomy. 



A = Point of stimulation. 



