HARDWICKE'S SCIENCE-GOSSIP. 



77 



the insect may be seen in July or August, usually ] peculiar and constant variety known as Valezma, 



most in perfection about the first week in July. To 

 the north of the Tweed few localities are given for 



Fig. 41. Argynnis Niobe, female, upper and under sides. 



Fig. 42. High Brown Fritillary (A. Adippe), male, upper and 

 under sides. 



it. Perhaps in England the two places where it 

 may be seen in most profusion are the banks of the 

 Wye and the New Eorest. .The latter produces a 



yet not entirely restricted to that forest, though very 

 conspicuous there. The flowers of the bramble and 

 thistle kindly bring these butterflies within reach of 

 the entomologist, yet they do not much favour his 

 making successful captures, a torn net and a fugi- 

 tive insect being often the result of an impetuous 

 strike. As the name implies, the " Silver- washed" 

 is " conspicuous by the absence " of the spots which 

 adorn others of the genus Argynnis; but instead, we 

 have streaks and pencilling of silver. 



Fig. 43. Queen of Spain Fritillary (A. Lathonia), female, 

 upper and under sides . 



Fig. 44. Pearl-bordered Fritillary (A. Euphrosyne), upper ana 

 under sides. 



One may class together the two fine insects, 

 A. Aglaia and Adippe, so much alike that entomo- 

 logists can scarcely distinguish them. Not much re- 



