6'» Hidh'liii (Ir in Sdcirtf lùiitoiii(il<)(jii]iir »iEgypIr 



long, is 6.5 mm.., Thus the antenna of the adult male 



is ten and a half times as lonjr as that of the two day 



old male. No nesAly hatched females %\ere ohserved. 



Haviuir obseiNe,! llial Ihe Tinniber of autennal 



Fi,U\ '^. I'l'ii i.hi nein a nicricn nn : Adult male ; base of tlie 

 antenna uiagnilied la..') times. 'l\\v wIkiIc antenna 

 is composed of 178 joints and is 7 em. lony. 



Joints is about four times as great in the adult as in 

 the n(>\vly halched young, it becomes uecessary to 

 try and explain how this increase takes place. 



In this case also it is my opinion that llie increase 



lakes [)lace independently of the nioidls i)y successive 

 tii\i>i<)us of \\\c (Itird joint {'A). Foi- if these (li\isi )us 



3. Aeeoi'dint; to Mari.att, there are seven moults in 

 /'. aiiiericdiKi . According to .Miall and Denny, P. orienlaHs 

 re(|uires A years for its development. — For P. america iin, 

 wliicli lives in tropical countries, tlie de\('loi)mcnt prtihabiy 

 lecpiii'es less time, 



