Srniicc du 7 Dccciiiliic Urli 121 



the (ìiìiil IccUi. riic \\liok> smlacc i^< closely piinc- 

 hiaU'd will) small [)i()jo(tions aii<I belvvcou thein 

 small li^hl-colouiTd ciiclos iiro^Milarlv scattered. A 

 (•{^11 oT llic epidermis corresjìonds lo each projection 

 while each of the circles, which are not so close 

 fo'-elher in the lar\a as in the adult, marks the posi- 

 tion of a sensorial |)on\ The (epidermis is f^reyish 

 hrown in coloni- and ioi- each lamella shows a clearly 

 dehned hand hoimded by two pale lines. The 

 epidermal k-IIs. piact-d closely side l)\ side, form the 

 niatrix from which the anh.Minal leelh are (levelo])ed. 

 The pale lines consist of the cuticnlar lamina only 

 and correspond to tlie sutures of dehiscen(;e. It is 

 here that the lamellae separate at the last moult. 



It is important to note that the number of joints 

 in the antennae just I)efore the last moult is exactly 

 the same as in the adult. To facilitate the count fine 

 hairs were placed across the antenna when mounting 

 it in Canada balsam and in both the cases drawn in 

 fi^'-s. à and .^) the number of joints was found to be 

 78. This result might have been foreseen as all the 

 organs of an insect are definitely formed at the last 

 moidt (2). 



Nevertheless it should also be noted that the 

 antenna of Empusa though complete continues to 

 lenirthen after the final moult. The larval antennae 



(2) From the paper on Plwiiacoccus Itir.snfns piihlished 

 by Mr. Hall in this Bulletin p. 27, it will be seen that the 

 increase in the mnnber of joints of the antennae of that 

 insect takes place at tlir nioiilts and that tlif number is 

 not the same in tlie now antenna a- in tlir cast skin 

 (Translator). 



