SILVER-WASHED FRITILLAllY. 115 



the wing, the inner row the largest sized, and the outer one on the 

 edge with a dark line running through them. The hind wings are of 

 the like ground-colour, with also three rows of larger spots, the inner 

 rounded, the next bell-shaped, and within the three two waved blackish 

 lines, meeting together near the lower part of the inner one. 



Underneath, the fore wings are paler in colour, the outer corner 

 dashed with metallic green ; of the dark marks, some shew through, 

 and of others only the outlines ; those towards the outer edge of the 

 wing are nearly obliterated. The hind wings are pale metallic green, 

 with two short waves of silver near the base, a third tinged with 

 purple running across the wing, and another still more tinged with 

 purple follows the margin ; between these two last is a row of darker 

 green spots, with lighter centres, and another of green half-moons, the 

 latter outermost. 



The female is larger than the male, without streaks, the spots larger, 

 the fulvous colour less bright, and tinged with green. 



The caterpillar is light brown, with a row of yellow sjDots on the 

 back; it is covered with long spines, the two next the head being 

 longer than the rest. 



The chrysalis is described as being grey, with gilt tubercles. 



One variety, a female, taken by J. C. Dale, Esq., has the upper 

 surface of the wings very dark, with some whitish spots at the tips 

 of the fore wings. 



In one, figured by Hubner, the wings on the right hand side are 

 of this variety, and those on the left as in the ordinary examples. 



Mr. Westwood adds, "A still more remarkable specimen has been 

 figured by M. Wesmael, in the fourth volume of the Bulletin of the 

 Academy of Brussels, in which the right wings were those of the male 

 type, except that the marginal row of spots were as large as in the 

 female; the left fore wing exhibited a complete 'melange' of the male 

 and female, as well as of the variety and typical individuals, the 

 ground-colour being fulvous, as in the male, but the markings, especially 

 at the tip, dark as in the female, with the white spots of the variety; 

 upper side of the hind wings entirely coloured as in the variety." 



Another specimen of this kind is mentioned by Ochsenheimcr, the 

 right wings of which were those of a male, and the left those of a 

 female. 



In Loudon's "Magazine of Natural History" the occurrence of a 

 similar one in England is noticed. 



The engraving is from specimens in my own cabinet. 



