20 BUTTERFLIES OF THE RIVIERA 



o. Hyale. 



TIMES OF APPEARANCE. From July to the end of 

 September, and again in the spring after hybernation. 



HABITAT. Generally distributed. 



OVUM. - - The eggs are laid in the spring by 

 hybernated females. 



LARVA. On Medicago, Coronilla varia and other 

 Leguminosae, in June and July. 



OBSERVATION. Hybrids of this species and the 

 next occur ; specimens possessing the characters 

 of each being met with. 



O. Bdusa. 



TIMES OF APPEARANCE. May and June, and from 

 August until November. 



HABITAT. Common. 



OVUM. According to Newman, " They are 

 placed in an erect position on the upper side of the 

 leaf, and are shaped much like a ninepin, somewhat 

 tapering towards both ends, and decidedly pointed at 

 the tip ; their colour, when extruded, is pale yellow, 

 but they gradually assume a darker hue, and finally 

 become tinged with pink." They may be met with in 

 the spring. 



LARVA. On Medicago lupulina and various species 

 of Trifolium, in June and July. 



VARIETY. ab. Helice, $. 



Somewhat scarce. Intermediate forms are of constan 1 

 occurrence. 



