249 



Thus Ihe eggs halch in al)out 14 days, and the first moult occurs 

 in abouL six days; Ihe remaining moulls at inlervals oi' about 

 10 days, except the last moult; the last nymphal instar occupying 

 about 20 days. The whole pei'iod iVom the laying ot the cgg to the 

 adult bug is thus about seveuty days. 



EXPLANATION OF FIGURES. 



1. Ootheca, natural size (side and top views). 



2. The same enlarged, side view (/ = outer wall), 



3. Plan of ootheca, enlarged. 



4. An egg and cap, outer reticulated cap removed ; enlarged [a — cap). 



5. Cap, enlarged. 



6. Section through neck of cap, enlarged. 



7. Transverse section through oolheca, enlarged. 



c, d, e, = strips forming outer wall. 



8. Longitudinal section and exterior viewof fgg, enlarged. 



b = outer reticulated cap. 

 î). Nymph as it appears in the egg the day bifore hatching, showing the 

 position of the cap on the hump of the epicranium. Egg-shcll not shown, only cap, 

 broken offat top. Enlarged. 



10. Diagram of bug, showing legs ot left side when thickening the wall of the 

 ootheca. Enlarged (Dotted Unes show legs in other positions.) 



11. Génital organs of the female. 



A= Anus; BC = Bursa copulatrix and vagina ; C = Cœcum ; CG = 

 CoUeterial glands; GS= Génital style; OV = Ovary; OVD =common 

 oviduct; R = Rectum; SP = Spermatheca; ST = Stomach ; T = 

 Thorax; UT = Urinary tubes. 



12. Nymph just hatched (first instarl. 



13. Nymph of second instar. 



14. Nymph of third instar. 

 1.5. Nymph of fourth instar. 



16. Nymph of fifth instar. 



17. Adult maie, after fifth (and last) moult. 



