12() lUiUclin (ir ìa Süciclc Etilovìologiqiie d'Egypte 



il, urNcrliicless, in preference lo anolher, on accoiuil 

 Ol Ihe peculiar aspect ci' Ilio dilated portion and oi 

 the conclusions which can be drawn from it. 



The antenna is about 4-5 mm. long, so that, 

 allowing lor the missing joints, it is nearly twice as 

 long as thai ol" the preceding specimen. The dilated 

 portion esjjccially has increased considerably. We 

 may estimate the total number ol joints as 6i. 01" 

 ihese from f 6 to 20 compose the apical portion which 

 is [ili form, while the dilated portion, the striated 

 sheath, consists of about 4o. These are relatively 

 sliort, %\ idened anti longitudinalh ilatleaed, 

 moreover the cross-section, originally circular, is 

 becoming elliptical. Each may be compared to a 

 fiatlened ring composed of two thin plates with a 

 hollow between them. Another fact to be observed 

 is that Ihe on! joint is relatively very long as com- 

 pared with that of the larva about to moult for the 

 last lime (figs. /| and 5). While in the mature larva 

 the divisions of the 3rd segment have reached the 

 base, there remains in the larva 3o mm. long an 

 undivided part capable of giving rise to several new 

 joints. 



Relying on these observations at first I thought 

 myself justified in concluding that all the new Joints 

 arise from the .3rd and that the same laws existed in 

 this case as in that of the cockroach. 



Since then, however, more careful study has led 

 mv to alter my opinion. For it can be seen that be- 

 tween the 8th and the :^/ith joints there are som.e 

 considerably shorter and more llattened which are 

 grouped in pairs. Each pair consists of two grey 



