245 



consequeuUy coinplple, the insect begins to thickeii tlie wall in tlie 

 f(jll()\viiig inauner : slatiding l'iglit against Ihe outlieca and soine 

 tiines ovei' il, Ihe iiisecL draws Ihe end ol" Ihe tibia and Ihe larsus of 

 the hiiid leg belween the génital styles, ;it Ihe same time emiting 

 a little coliclerial lliiid. The iniddle leg is then shiflcd back vards 

 and the end of the tibia and the tarsus of the hind leg scraped over 

 the fémur of the middle leg. The liind and middle legs now mcM'e 

 into their natnral positions at rest, and the tarsus of 4,he fore leg 

 scrapes the culleterial lluid from the feratir of the middle leg and 

 applies it to the wall of the ootheca, smearing on the fhiid from the 

 base upwards, and gradually working jight round the ootheca, 

 laying on the lluitl wilh the tarsus as a brick laycr spreads moi'tar 

 (lig. 10 shows the legs of the lel't hand side in their dilIV-rent 

 positions whiist tlie insect is 

 Ihickening the wall). The insect 

 generally uses the legs of each 

 side alternately, but somelimes 

 uses the tarsi of bolh fore tarsi 

 together. When collecting the 

 fluid from the fémur of the mid- 

 dle leg, she l'ubs the tarsus of 

 the fore leg up and down from 

 the base of the fémur outwards 

 about half-a-dozen limes, not touching the fémur on the back or 

 return stroke. The thickening of the outer wall occupies the 

 insect for about another three hours. As with other Bugs, the 

 Mantis, etc., one may know when the female is readj to lay, as she 

 walks about restlessiy touching varions surfaces with the tip of 

 the abdomen, to see if they are suitable places lo oviposit, and 

 she usually takes a long time lo make up her mind. 



The eggs are dai-k shiny-brown in colour, but the beaulifully 

 reticulaled outer ca[) or cylinder, enclosing the inner cap or 

 stopper, is almost colourless. The stojiper is 

 hollow, but the cavity, large and funnel-shaped 

 al the top, rapidly narrows to the bottom, 

 where Ihe micr-opyle is probably silualed. The 

 neck of the stopiier (fig. G) in section is penla- or 

 hexagonal, Ihe ribs rising from th.e circular base 

 and working ont into the top orbell of the stop- 

 per. The eggs become reddish before hatching. 

 The eggs hatch in about 14 days. The newiy halched nymphs 

 are orange, the legs and antennae red-brown. The long « neck » 

 (epicvanixiii) of the adult is, in thèse newIy hatched nymphs, 

 hunched into a more or less conical hump, on the top whereof sits 



Fig. lo. 



Fil- 6. 



