INSECTS. 155 



head and neck-shield black. Body with a broad, 

 grey, longitudinal streak on each side. Four longi- 

 tudinal rows of dark brown warts. Habits : The 

 moth is on the wiug in June and July, and lays the 

 longish ovoid eggs on cruciferous plants (rape, radish, 

 several wild forms). The caterpillar lives concealed 

 in a white web, and gnaws holes in the pods, into 



Fig. 104. — The Mother-of-pearl Moth (Bofys margaritalis), 

 with larva (1) and iDjnred pods. 



which it inserts the forepart of its body for the 

 purpose of devouring the still green seeds. The 

 attacked pods, owing to the presence of round holes 

 in them, look something like flutes or fifes. 



The full-grown caterpillars burrow into the soil, 

 where they hybernate in a delicate web. Bemedy : 

 Compare the preceding species. 



Family: Tortricidse {Leaf-rollers). 



Small, thickset moths (Fig. 105), with smaller 

 palps than the snout moths. Fore wings broad at 

 the root, with straight or somewhat curved outer 

 margins. Hind wings as broad, or even broader, 

 than the fore wings. When at rest the fore wings 

 lie in a roof-like way. They usually possess many 

 characteristic markings. Hind wings greyish, with- 

 out markings. Antennte thread-like. Caterpillars 



