94 THE BUTTERFLIES OF THE BRITISH ISLES. 



Christchurch, one in August, 1899 ; Poole, one in 1901. There 

 does not seem to be any authentic record of the caterpillar 

 having been observed in Kent or any other British locality in 

 which the butterfly has been noted. This may possibly be due 

 to its love of concealment. 



There are two flights of the butterfly in the year, one in the 

 spring and the other in the autumn. 



Females from the Continent may arrive on our east or south 

 coasts in May, and deposit eggs from which the autumn butter- 

 flies are developed. Some of these might wander farther inland, 

 but eggs would almost certainly be laid on the spot. The fate 

 of the caterpillars from autumnal eggs would depend on the 

 winter ; if mild they, or at least some of them, might manage to 

 get through and attain the butterfly state about May, but 

 their doing so is rather doubtful. 



The species is widely distributed and often common on the 

 Continent, and its range extends to Persia, Northern Asia, and 

 North Africa. In Eastern Asia it is represented by var. isaea. 



/i. \^j> The Pearl-bordered Fritillary (Argynnis euphrosyne). 



I Some authors consider the smaller Fritillaries to be generically 

 £lV^ separable from the larger kinds, and place this and the next 

 TJJ&r species in the genus Brenthis, whilst the Queen of Spain is 

 i\»** r referred to the genus Issoi r ia^ Hiibner. Here, however, they are 

 1 m retame d in Argynnis. 



In colour and in the marking of the upper side the Pearl- 

 w-j bordered is very like the High Brown, but, as will be seen 

 \% from the figures, it is much smaller in size, and the ornamenta- 

 tion on the under side is different. There is one silvery spot 

 at the base of the hind wings, a larger one about the middle 

 of the wings, and a row of spots on the outer margin. The 

 female is rather larger than the male, and darker at the bases of 

 the wings. 



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