BUTTERFLIES 229 



lanes ; recognized by the silver-washed marks on under side of hind-wing ; 

 almost like silver sand when tide is out. 



Food plant Dog-violet. 



Larva Black ; spiny ; two yellow lines on back ; two spines, like horns, 

 on head. 



Pupa Yellowish brown ; gold lustre on back, and golden points ; sus- 

 pended by tail. 



Eggs Green-tinged ; ribbed and notched ; darken. Laid in June and July. 



Locality Southern woodlands. 



A well-known variety of this species has a greenish coloration throughout 

 instead of the beautiful rich brown hue. (Valerina.) 



22. High-brown Fritillary (Argynnis adippe}. On under wing silvery 

 spots, as a rule, but several varieties occur. Smaller than Paphia. 



Food plant Dog-violet. 



Larva Black ; spiny ; white line on back ; grey patches on sides. 

 Pupa Brown ; greeny-gold points ; head downwards. 

 Eggs Yellowish green, changing through red to blue-green. Laid in July. 

 Locality Southern woodlands chiefly, but also generally distributed in 

 England. 



23. 23 (a). Dark-green Fritillary (Argynnis aglaia). Almost as large as 

 Paphia, but easily distinguished by its regular silver spots on under side 

 (no "washes"). 



Food plant Dog-violet. 



Larva Grey and black ; yellow back stripe ; row of reddish spots at sides. 



Pupa Black, with pale brown markings ; hung by tail. 



Eggs Yellow, changing to purplish, in rings ; ribbed and reticulated. 

 July and August. 



Locality Fairly common on moorland and sea cliffs. 



23 (b). Queen of Spain Fritillary (Argynnis lathonia). Resembling Paphia, 

 but smaller in size, and many irregular pearly patches on under wings (not 

 " washes"). 



Food plant Dog-violet. 



Larva Black, plentifully dotted with white ; spiny ; two white streaks 

 on each wing. 



Pupa Olive-brown, speckled with brown, black, and white ; gilding on 

 head and body ; suspended by tail. 



Eggs Yellowish, changing to purplish grey ; much ribbed and cross- 

 ribbed. August to September. 



Locality South Coast, especially Dover, but rare. 



24. Pearl-bordered Fritillary (Argynnis euphrosyne). Like Adippe, but much 

 smaller ; and the pearl spots under hind-wing are placed like outline of anchor. 



Food plant Dog-violet. 



Larva Black ; velvety ; grey side-stripe ; spiny. 



Pupa Brownish and grey ; suspended by tail. 



