112 



after the hatching, a fact which deserves attention as the head 

 and the tubercles are black from the beginning. 



Mesothorax and Metathorax. S. dorsalis, s. suprastigmalis, s. dor- 

 solateralis, a small s. j^^ostignialis, no rudimentary stigma, though 

 the tracheae are seen through the skin ; s. bamlis, sometimes a 

 8. pedalis. 



On the border of the mesothorax and metathorax is a rudi- 

 mentary stigma. 



Abdomen 1, 2. S. dorsalis^ s. subdorsaUs, s. snprasUgmalis, s. 

 podstigmalis^ a. infrastif/malis, three s. hasales. 



Even after repeated examination I could not find in my ma- 

 terial a 8. prostigmalis. 

 Seym. 3 — 6 = 1, but two s. hasales on one tuberculum. 



^ 7 = 1, two s. hasales. 



„ 8 = 1, two s. hasales^ large stigma. 



„ 9 = 1, no 8. infrastigmalis, in the beginning a rudimen- 

 tary stigma (?). 



„ 10. S. dorsalis, s. suhdorsalis and s. awprastigmalis with 

 that of the other side on one median anal shield which 

 gets black from half an hour to two hours after the hat- 

 ching, whilst the tubercles are immediately black, two 

 8. hasales, rather far from each other. 



„ 11. Behind the anal shield is a black spot with a single 

 seta. I think that a part of the s. basales of 10 belongs 

 to 11, as s. infrastigmalis fails already on 9. 



Towards the time of moulting brown-red spots appear between 

 the primary setae, which are mostly ring-shaped. They also arise 

 as a broad border round the primary tubercles, and are due to 

 the transparency of the skin which allows the colours of instar II 

 to be visible. 



Instar //. Length 4 mm.. Duration 4 days. The skin bursts just 

 behind the head. The caterpillar creeps out at the front, as when 

 leaving a bag, the skin of the head remains for a short time as 

 a shield on the head. The caterpillar does not eat the old skin. 



In the middle of the back we see a rather sharply confined, 



