m 



[Februarj-, 



There is a green form of the larva, besides the one above described, 

 and this probablj corresponds with the green form of the adult. Some 

 change takes place in the distribution of the pigment during larval 

 life, for a cast skin of the third instar shows almost as much colour as 

 the insect itself, and those of the first are quite black, except the 

 abdomen, which is hyaline ; but one yielded by the last instar is 

 entirely pale ochreous, with a fine rosy tinge on the wing pads ; and 

 the black punctures show out very distinctly, indicating that the pig- 

 ment in them is entirely superficial. 



This insect is not absolutely confined to furze- bushes ; it has been 

 found also on other leguminous plants, such as broom, Genista, Meli- 

 Iotas, and TrifoUum. Other plants also, outside the Legmninosae, 

 have yielded it, such as Tamarisk (Tuck), Willow (Sopp), Heather 

 (Bedwell), and Renter adds Lonicera, Crataegus, Betula, Quercus, and 

 in winter on Pines. But, except the last, most of these are probably 

 merely casual occurrences, and in this country. at any rate, the staple 

 host-plant is certainly Utex. 



Fig. 1. — P. lituratus ova, 

 hatched. 



Fig, 2. — P. lituratus ova^ x 3, 

 parasitised. 



The eggs are subject to the attacks of a minute Hymenopterous 

 parasite, a Proctotrupid of the genus Telenomns. The parasites do not 

 appear till about three weeks after the time for the emergence of their 

 hosts ; and apparently their first meaj after emergence consists of the 

 lid of the egg, which entirely disappears without leaving any traces 



