56 BRITISH BUTTERFLIES. 



Varieties of the female are also met with, of various 

 intermediate shades of colour between the white and 

 the ordinary orange. 



Yet is it not possible that all these varieties may be 

 mules between C. Edusa and C. Hyale (the next species), 

 the males of which are often seen pursuing the lady 

 Edusas ? but if so, as indeed it would be on any other 

 hypothesis, it is hard to account for the unvarying 

 character of the male. 



This butterfly is also called the Clouded Saffron. 



THE CLOUDED SULPHITE, OE PALE 

 CLOUDED YELLOW BUTTEEFLY. 



(Golias Hyale.) (Plate III. fig. 4.) 



WE may, in general, readily distinguish this elegant 

 insect from the last species the females of which it 

 rather resembles in its markings by the difference in 

 the ground tint of the wings, which in this vary from 

 primrose or sulphur yellow to a greenish white. 



There is, however, some risk of confounding this 

 with the white variety of Edusa (Helice), a mistake 

 often committed by young entomologists ; so it will be 

 well to point out the most prominent distinction between 

 the two ; and this is easily done, by observing that in 

 Edusa the dark border of the upper wings is of nearly 

 equal breadth along the whole of the outer margin, and 

 at the lower corner is continued inwards for a short dis- 

 tance ; whilst in Hyale this border narrows rapidly, 

 and disappears before reaching the lower corner of the 

 wing. Also the dark border of the hind wings is much 

 broader in Edusa than in Hyale. Here we have dis- 

 tinctive marks, quite independent of the ground colour 

 of the wings. 



The sexes of this butterfly are nearly alike in their 

 markings, the chief difference being in the yellower 

 ground tint of the males. 



