378 LÉPIDOPTÉROLOGIE COMPARÉE 



The space betvveen the legs is mvicli darker in harrisoni and in 

 this we hâve a great contrast to the pale leg area of hirtaria. 



4th INSTAR. 



Length 2,7-2,90111. 



Breadth 1-2,8 mm. 



Head 1,7 mm. 



The larva now, tnougn .•alili extremciy likc uiat of denhami 

 is to a certain extent nearer to zonaria. 



The head is distmctly of the zonana coloration i. e. it is grey, 

 black mixed, but to a much less extent than in denhami. 



In hirtaria and denhami, the space between the two medio- 

 dorsal stripes is greyer and cooler in tone to the eye than in 

 harrisoni and zonaria. 



The anal plate and the spots before it, présent the same diffé- 

 rence as in the last instar. 



As before, the spiracular stripe is broader in this and paler, 

 and thus the spiracles, which for the most part are without the 

 stripe in denhami, may be partly withm it or just touch it in the 

 présent form. 



The stripes, too, show a greater tendency to hâve a vveak edging 

 and this is also a zonaria characteristic. 



5th INSTAR. 



Length 4,3-4,7 cm. 



Head 3,4-3,6 mm. 



Average breadth 4,6mm. 



The différences in this instar are muca tiic same as in the last 

 and are therefore not repeated. However, a description of the 

 larva, made quite independently of the connection with either 

 hirtaria, zonaria and for the most part with denhami, is appended. 



Head. The head is not markedly less than the ist thoracic 

 segment but is fairly small and can be retracted slightly into the 

 thorax. 



