113 



bright-yellow linea dursalis, beginning between the two prothoracic 

 shields and ending near the anal shield; the skin is green. The 

 arrangement of the tubercula is as in instar /, but the setae are 

 much longer and between the primary ones numerous small, 

 M'oondary tubercula, each with one seta, have inserted themselves. 



The prothoracic shield has now four tubercula, one ventrad of 

 «. sulHloi-salis ha« been added = .«♦. itub<lorsali.f inf. V 



On the distal border is a row of red spots. On all the segments 

 the easily recognisable primary tubercula are round the edges 

 still a little red. Segment 11 is no longer to be seen distinctly. 



Instar ///. length 6 — 8 mm. Duration 4 — 5 days. 



Ik'sides the characteristics of instar //, we see a bright-yellow 

 lini*a stigmalis and many small hairs between the primary ones 

 which remain distinctly visible. Instead of the mono* and bisetose 

 tubercula basalia we find on the segments 3 — 6 a row of s, basales^ 

 curving over the beginning of the abdominal legs and over the 

 places where legs might have stood on the segments 1, 2, 7, 8. 



On the abdominal and anal legs there is a black spot covered 

 with short hairs, which spot might perhaps be taken as a highly 

 modified jf. ftedalin. 



Instar IV. Length 12 mm. Duration 5 days. 



The smaller setae have grown a great deal, especially one under 

 i«. subdorsal in of the abdominal segments. Between ». dorsalis and 

 j(. suprastuj mails on one side and s. subdorsalis on the other 

 we see a new distinct row and also one spot caudal of s. sub- 

 dorsalis. 



We can easily recognize the primary tubercula: s. dorsolate- 

 ralis of the prothorax for instance is double as in instar /. 



They nearly all possess, however, a ring of smaller setae round 

 the larger ones. The stigmal line gets very broad. 



Instar V. Length 23 mm. (to 45 mm.) Duration 9 — 14 days. 



The tubercula are very large and conical, they bear many 

 setae (= chalazae). 



The linea stigmalis is continued on the head as a white stripe. 

 The arrangement of newly arisen tubercula in vertical rows is 



