OF SUCTION IN LYGUS PABULINUS. 701 
They are flat and hollow and end in retort-shaped organs like 
the maxillary stylets; but unlike them :— 
(i.) They never form tubes, as they do not unite and have no 
grooves on them. They are separate from end to end. Each of 
Text-figure 8. 
>_. _\ 5a 
Lygus pabulinus. 
Transverse section of the tip of the labium. Immersion-lens & Oc. 4. 
For explanation of the lettering see p. 693. 
Text-figure 9. 
Lygus pabulinus. 
Transverse section of the tip of the labium, showing the labrum and the labium 
enclosing the stylets. Immersion & Oc. 4. 
For explanation of the lettering see p. 693. 
49* 
