oO S1GXOEETIA LUZUL.E. 



1890. I have also found it sparingly on plants growing 

 beneath gorse (Ulex europaeus) on a piece of heathy 

 ground at Briston, near East Dereham, Norfolk, 

 where the ground was decidedly moist from the over- 

 shadowing branches of the gorse. I have found it still 

 more sparingly in openings in the Cranham Woods, 

 near Stroud, Gloucestershire, on plants almost hidden, 

 amongst grasses and Heliantliemum vulgar e ; all the 

 ovisacs were quite concealed, and I did not discover 

 them until I had divided the surrounding herbage. 



Habits. The eggs, which are pinkish in colour, are 

 laid during the formation of the ovisac, and also during 

 a short time after its completion ; this takes place 

 towards the end of July and early in August. The 

 eggs remain throughout the winter in the ovisac, the 

 larvae hatching in spring. Until the males are ready 

 to pupate, the sexes live together on the upper 

 surfaces of the leaves of the food-plant. In June 

 the majority of the second-stage males walk from the 

 upper to the under sides of the leaves, and there con- 

 struct their puparia and undergo their final change ; 

 this occupies a period of about fourteen days ; the 

 perfect males emerge towards the end of June and 

 early in July. Although the females are usually 

 stationary, many examples may be seen walking about 

 the food- plants, evidently searching for more favour- 

 able quarters, and should they be unduly confined in 

 the collecting-box, numbers of them will wander aim- 

 lessly about, a habit rarely attained in other plant- 

 feeding Lecaniinge. The females may, therefore, be 

 considered active up to the period of parturition ; 

 moreover, if placed upon their backs they readily 

 regain their feet by bringing their extremities together. 

 Fecundation takes place immediately on the appearance 

 of the males. Early in August the females have com- 

 pleted the formation of their ovisacs, which occupies a 

 period of from twelve to sixteen days ; many examples 

 begin to " spin " early in July, and during the whole 

 process the cephalic portion of the body remains 



